169 files changed, 22514 insertions, 54 deletions

diff --git a/bin/.gitignore b/bin/.gitignore
new file mode 100644
index 00000000..be0a8004
--- /dev/null
+++ b/bin/.gitignore
@@ -0,0 +1,37 @@
+*.html
+*.o
+beef
+bibsort
+bit
+bri
+c
+config.mk
+dtch
+ever
+fbatt
+fbclock
+freecell
+glitch
+hilex
+htagml
+htmltags
+modem
+mtags
+nudge
+order
+pbd
+pngo
+psf2png
+psfed
+ptee
+relay
+scheme
+scheme.h
+shotty
+sup
+tags
+title
+typer
+up
+when
+xx
diff --git a/bin/LICENSE b/bin/LICENSE
new file mode 100644
index 00000000..dba13ed2
--- /dev/null
+++ b/bin/LICENSE
@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
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+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/bin/Makefile b/bin/Makefile
new file mode 100644
index 00000000..14ad94eb
--- /dev/null
+++ b/bin/Makefile
@@ -0,0 +1,153 @@
+PREFIX ?= ~/.local
+MANDIR ?= ${PREFIX}/share/man
+
+LIBS_PREFIX ?= /usr/local
+CFLAGS += -I${LIBS_PREFIX}/include
+LDFLAGS += -L${LIBS_PREFIX}/lib
+
+CFLAGS += -Wall -Wextra -Wpedantic -Wno-gnu-case-range
+
+BINS += beef
+BINS += bibsort
+BINS += bit
+BINS += c
+BINS += dtch
+BINS += glitch
+BINS += hilex
+BINS += htagml
+BINS += modem
+BINS += mtags
+BINS += nudge
+BINS += order
+BINS += pbd
+BINS += pngo
+BINS += psf2png
+BINS += ptee
+BINS += scheme
+BINS += shotty
+BINS += sup
+BINS += title
+BINS += up
+BINS += when
+BINS += xx
+
+BSD += ever
+
+GAMES += freecell
+
+LINUX += bri
+LINUX += fbatt
+LINUX += fbclock
+LINUX += psfed
+
+TLS += relay
+TLS += typer
+
+MANS = ${BINS:%=man1/%.1}
+MANS.BSD = ${BSD:%=man1/%.1}
+MANS.GAMES = ${GAMES:%=man6/%.6}
+MANS.LINUX = ${LINUX:%=man1/%.1}
+MANS.TLS = ${TLS:%=man1/%.1}
+
+LDLIBS.dtch = -lutil
+LDLIBS.fbclock = -lz
+LDLIBS.freecell = -lcurses
+LDLIBS.glitch = -lz
+LDLIBS.modem = -lutil
+LDLIBS.pngo = -lz
+LDLIBS.ptee = -lutil
+LDLIBS.relay = -ltls
+LDLIBS.scheme = -lm
+LDLIBS.title = -lcurl
+LDLIBS.typer = -ltls
+
+ALL ?= meta any
+
+-include config.mk
+
+all: ${ALL}
+
+meta: .gitignore tags
+
+any: ${BINS}
+
+bsd: ${BSD}
+
+games: ${GAMES}
+
+linux: ${LINUX}
+
+tls: ${TLS}
+
+IGNORE = *.o *.html
+IGNORE += ${BINS} ${BSD} ${GAMES} ${LINUX} ${TLS}
+IGNORE += scheme.h tags htmltags
+
+.gitignore: Makefile
+	echo config.mk '${IGNORE}' | tr ' ' '\n' | sort > $@
+
+tags: *.[chly]
+	ctags -w *.[chly]
+
+clean:
+	rm -f ${IGNORE}
+
+install: ${ALL:%=install-%}
+
+install-meta:
+	install -d ${PREFIX}/bin ${MANDIR}/man1
+
+install-any: install-meta ${BINS} ${MANS}
+	install ${BINS} ${PREFIX}/bin
+	install -m 644 ${MANS} ${MANDIR}/man1
+
+install-bsd: install-meta ${BSD} ${MANS.BSD}
+	install ${BSD} ${PREFIX}/bin
+	install -m 644 ${MANS.BSD} ${MANDIR}/man1
+
+install-games: install-meta ${GAMES} ${MANS.GAMES}
+	install ${GAMES} ${PREFIX}/bin
+	install -m 644 ${MANS.GAMES} ${MANDIR}/man6
+
+install-linux: install-meta ${LINUX} ${MANS.LINUX}
+	install ${LINUX} ${PREFIX}/bin
+	install -m 644 ${MANS.LINUX} ${MANDIR}/man1
+
+install-tls: install-meta ${TLS} ${MANS.TLS}
+	install ${TLS} ${PREFIX}/bin
+	install -m 644 ${MANS.TLS} ${MANDIR}/man1
+
+uninstall:
+	rm -f ${BINS:%=${PREFIX}/bin/%} ${MANS:%=${MANDIR}/%}
+	rm -f ${BSD:%=${PREFIX}/bin/%} ${MANS.BSD:%=${MANDIR}/%}
+	rm -f ${GAMES:%=${PREFIX}/bin/%} ${MANS.GAMES:%=${MANDIR}/%}
+	rm -f ${LINUX:%=${PREFIX}/bin/%} ${MANS.LINUX:%=${MANDIR}/%}
+	rm -f ${TLS:%=${PREFIX}/bin/%} ${MANS.TLS:%=${MANDIR}/%}
+
+.SUFFIXES: .pl
+
+.c:
+	${CC} ${CFLAGS} ${LDFLAGS} $< ${LDLIBS.$@} -o $@
+
+.o:
+	${CC} ${LDFLAGS} $< ${LDLIBS.$@} -o $@
+
+.pl:
+	cp -f $< $@
+	chmod a+x $@
+
+OBJS.hilex = c11.o hilex.o make.o mdoc.o sh.o
+
+hilex: ${OBJS.hilex}
+	${CC} ${LDFLAGS} ${OBJS.$@} ${LDLIBS.$@} -o $@
+
+${OBJS.hilex}: hilex.h
+
+fbatt.o fbclock.o: scheme.h
+
+psf2png.o scheme.o: png.h
+
+scheme.h: scheme
+	./scheme -c > $@
+
+include html.mk
diff --git a/bin/README.7 b/bin/README.7
new file mode 100644
index 00000000..0ff46eab
--- /dev/null
+++ b/bin/README.7
@@ -0,0 +1,87 @@
+.Dd April 26, 2021
+.Dt BIN 7
+.Os "Causal Agency"
+.
+.Sh NAME
+.Nm bin
+.Nd various utilities
+.
+.Sh DESCRIPTION
+Various tools primarily targeting
+Darwin,
+.Fx
+and
+.Ox .
+Some tools target Linux.
+.
+.Pp
+.Bl -tag -width "fbclock(1)" -compact
+.It Xr beef 1
+Befunge-93 interpreter
+.It Xr bibsort 1
+reformat bibliography
+.It Xr bit 1
+calculator
+.It Xr bri 1
+backlight brightness control
+.It Xr c 1
+run C statements
+.It Xr dtch 1
+detached sessions
+.It Xr ever 1
+watch files
+.It Xr fbatt 1
+framebuffer battery indicator
+.It Xr fbclock 1
+framebuffer clock
+.It Xr freecell 6
+patience game
+.It Xr glitch 1
+PNG glitcher
+.It Xr hilex 1
+syntax highlighter
+.It Xr htagml 1
+tags HTMLizer
+.It Xr modem 1
+fixed baud rate wrapper
+.It Xr mtags 1
+miscellaneous tags
+.It Xr nudge 1
+terminal vibrator
+.It Xr order 1
+operator precedence
+.It Xr pbd 1
+macOS pasteboard daemon
+.It Xr pngo 1
+PNG optimizer
+.It Xr psf2png 1
+PSF2 to PNG renderer
+.It Xr psfed 1
+PSF2 font editor
+.It Xr ptee 1
+tee for PTYs
+.It Xr relay 1
+IRC relay bot
+.It Xr scheme 1
+color scheme
+.It Xr shotty 1
+terminal capture
+.It Xr sup 1
+single-use passwords
+.It Xr title 1
+page titles
+.It Xr up 1
+upload file
+.It Xr when 1
+date calculator
+.It Xr xx 1
+hexdump
+.El
+.
+.Pp
+One piece of reused code.
+.Pp
+.Bl -tag -width "png(3)" -compact
+.It Xr png 3
+basic PNG output
+.El
diff --git a/bin/beef.c b/bin/beef.c
new file mode 100644
index 00000000..b2579b73
--- /dev/null
+++ b/bin/beef.c
@@ -0,0 +1,141 @@
+/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <time.h>
+
+enum {
+	Cols = 80,
+	Rows = 25,
+};
+static char page[Rows][Cols];
+
+static char get(int y, int x) {
+	if (y < 0 || y >= Rows) return 0;
+	if (x < 0 || x >= Cols) return 0;
+	return page[y][x];
+}
+static void put(int y, int x, char v) {
+	if (y < 0 || y >= Rows) return;
+	if (x < 0 || x >= Cols) return;
+	page[y][x] = v;
+}
+
+enum { StackLen = 1024 };
+static long stack[StackLen];
+static size_t top = StackLen;
+
+static void push(long val) {
+	if (!top) errx(EX_SOFTWARE, "stack overflow");
+	stack[--top] = val;
+}
+static long pop(void) {
+	if (top == StackLen) return 0;
+	return stack[top++];
+}
+
+static struct {
+	int y, x;
+	int dy, dx;
+} pc = { .dx = 1 };
+
+static void inc(void) {
+	pc.y += pc.dy;
+	pc.x += pc.dx;
+	if (pc.y == -1) pc.y += Rows;
+	if (pc.x == -1) pc.x += Cols;
+	if (pc.y == Rows) pc.y -= Rows;
+	if (pc.x == Cols) pc.x -= Cols;
+}
+
+static bool string;
+
+static bool step(void) {
+	char ch = page[pc.y][pc.x];
+
+	if (ch == '"') {
+		string ^= true;
+	} else if (string) {
+		push(ch);
+		inc();
+		return true;
+	}
+
+	if (ch == '?') ch = "><^v"[rand() % 4];
+
+	long x, y, v;
+	switch (ch) {
+		break; case '+': push(pop() + pop());
+		break; case '-': y = pop(); x = pop(); push(x - y);
+		break; case '*': push(pop() * pop());
+		break; case '/': y = pop(); x = pop(); push(x / y);
+		break; case '%': y = pop(); x = pop(); push(x % y);
+		break; case '!': push(!pop());
+		break; case '`': y = pop(); x = pop(); push(x > y);
+		break; case '>': pc.dy = 0; pc.dx = +1;
+		break; case '<': pc.dy = 0; pc.dx = -1;
+		break; case '^': pc.dy = -1; pc.dx = 0;
+		break; case 'v': pc.dy = +1; pc.dx = 0;
+		break; case '_': pc.dy = 0; pc.dx = (pop() ? -1 : +1);
+		break; case '|': pc.dx = 0; pc.dy = (pop() ? -1 : +1);
+		break; case ':': x = pop(); push(x); push(x);
+		break; case '\\': y = pop(); x = pop(); push(y); push(x);
+		break; case '$': pop();
+		break; case '.': printf("%ld ", pop()); fflush(stdout);
+		break; case ',': printf("%c", (char)pop()); fflush(stdout);
+		break; case '#': inc();
+		break; case 'g': y = pop(); x = pop(); push(get(y, x));
+		break; case 'p': y = pop(); x = pop(); v = pop(); put(y, x, v);
+		break; case '&': x = EOF; scanf("%ld", &x); push(x);
+		break; case '~': push(getchar());
+		break; case '@': return false;
+		break; default:  if (ch >= '0' && ch <= '9') push(ch - '0');
+	}
+
+	inc();
+	return true;
+}
+
+int main(int argc, char *argv[]) {
+	srand(time(NULL));
+	memset(page, ' ', sizeof(page));
+
+	FILE *file = stdin;
+	if (argc > 1) {
+		file = fopen(argv[1], "r");
+		if (!file) err(EX_NOINPUT, "%s", argv[1]);
+	}
+
+	int y = 0;
+	char *line = NULL;
+	size_t cap = 0;
+	while (y < Rows && 0 < getline(&line, &cap, file)) {
+		for (int x = 0; x < Cols; ++x) {
+			if (line[x] == '\n' || !line[x]) break;
+			page[y][x] = line[x];
+		}
+		y++;
+	}
+	free(line);
+
+	while (step());
+	return pop();
+}
diff --git a/bin/bibsort.pl b/bin/bibsort.pl
new file mode 100644
index 00000000..0d132c19
--- /dev/null
+++ b/bin/bibsort.pl
@@ -0,0 +1,68 @@
+#!/usr/bin/env perl
+use strict;
+use warnings;
+
+while (<>) {
+	print;
+	last if /^[.]Sh STANDARDS$/;
+}
+
+my ($ref, @refs);
+while (<>) {
+	next if /^[.](Bl|It|$)/;
+	last if /^[.]El$/;
+	if (/^[.]Rs$/) {
+		$ref = {};
+	} elsif (/^[.]%(.) (.*)/) {
+		$ref->{$1} = [] unless $ref->{$1};
+		push @{$ref->{$1}}, $2;
+	} elsif (/^[.]Re$/) {
+		push @refs, $ref;
+	} else {
+		print;
+	}
+}
+
+sub byLast {
+	my ($af, $al) = split /\s(\S+)(,.*)?$/, $a;
+	my ($bf, $bl) = split /\s(\S+)(,.*)?$/, $b;
+	($al // $af) cmp ($bl // $bf) || $af cmp $bf;
+}
+
+foreach $ref (@refs) {
+	@{$ref->{A}} = sort byLast @{$ref->{A}};
+	@{$ref->{Q}} = sort @{$ref->{Q}} if $ref->{Q};
+	if ($ref->{N} && $ref->{N}[0] =~ /RFC/) {
+		$ref->{R} = $ref->{N};
+		delete $ref->{N};
+	}
+	if ($ref->{R} && $ref->{R}[0] =~ /RFC (\d+)/ && !$ref->{U}) {
+		$ref->{U} = ["https://tools.ietf.org/html/rfc${1}"];
+	}
+}
+
+sub byAuthor {
+	local ($a, $b) = ($a->{A}[0], $b->{A}[0]);
+	byLast();
+}
+
+{
+	local ($,, $\) = (' ', "\n");
+	print '.Bl', '-item';
+	foreach $ref (sort byAuthor @refs) {
+		print '.It';
+		print '.Rs';
+		foreach my $key (qw(A T B I J R N V U P Q C D O)) {
+			next unless $ref->{$key};
+			foreach (@{$ref->{$key}}) {
+				print ".%${key}", $_;
+			}
+		}
+		print '.Re';
+	}
+	print '.El';
+}
+
+while (<>) {
+	print;
+}
diff --git a/bin/bit.y b/bin/bit.y
new file mode 100644
index 00000000..ab310492
--- /dev/null
+++ b/bin/bit.y
@@ -0,0 +1,202 @@
+/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+%{
+
+#include <ctype.h>
+#include <err.h>
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sysexits.h>
+
+#define MASK(b) ((1ULL << (b)) - 1)
+
+#define YYSTYPE uint64_t
+
+static int yylex(void);
+static void yyerror(const char *str);
+static void print(uint64_t val);
+
+static uint64_t vars[128];
+
+%}
+
+%token Int Var
+
+%left '$'
+%right '='
+%left '|'
+%left '^'
+%left '&'
+%left Shl Shr Sar
+%left '+' '-'
+%left '*' '/' '%'
+%right '~'
+%left 'K' 'M' 'G' 'T'
+
+%%
+
+stmt:
+	| stmt expr '\n' { print(vars['_'] = $2); printf("\n"); }
+	| stmt expr ',' { print(vars['_'] = $2); }
+	| stmt '\n'
+	;
+
+expr:
+	Int
+	| Var { $$ = vars[$1]; }
+	| '(' expr ')' { $$ = $2; }
+	| expr 'K' { $$ = $1 << 10; }
+	| expr 'M' { $$ = $1 << 20; }
+	| expr 'G' { $$ = $1 << 30; }
+	| expr 'T' { $$ = $1 << 40; }
+	| '~' expr { $$ = ~$2; }
+	| '&' expr %prec '~' { $$ = MASK($2); }
+	| '+' expr %prec '~' { $$ = +$2; }
+	| '-' expr %prec '~' { $$ = -$2; }
+	| expr '*' expr { $$ = $1 * $3; }
+	| expr '/' expr { $$ = $1 / $3; }
+	| expr '%' expr { $$ = $1 % $3; }
+	| expr '+' expr { $$ = $1 + $3; }
+	| expr '-' expr { $$ = $1 - $3; }
+	| expr Shl expr { $$ = $1 << $3; }
+	| expr Shr expr { $$ = $1 >> $3; }
+	| expr Sar expr { $$ = (int64_t)$1 >> $3; }
+	| expr '&' expr { $$ = $1 & $3; }
+	| expr '^' expr { $$ = $1 ^ $3; }
+	| expr '|' expr { $$ = $1 | $3; }
+	| Var '=' expr { $$ = vars[$1] = $3; }
+	| expr '$' { $$ = $1; }
+	;
+
+%%
+
+static int lexInt(uint64_t base) {
+	yylval = 0;
+	for (int ch; EOF != (ch = getchar());) {
+		uint64_t digit = base;
+		if (ch == '_') {
+			continue;
+		} else if (isdigit(ch)) {
+			digit = ch - '0';
+		} else if (isxdigit(ch)) {
+			digit = 0xA + toupper(ch) - 'A';
+		}
+		if (digit >= base) {
+			ungetc(ch, stdin);
+			return Int;
+		}
+		yylval *= base;
+		yylval += digit;
+	}
+	return Int;
+}
+
+static int yylex(void) {
+	int ch;
+	while (isblank(ch = getchar()));
+	if (ch == '\'') {
+		yylval = 0;
+		while (EOF != (ch = getchar()) && ch != '\'') {
+			yylval <<= 8;
+			yylval |= ch;
+		}
+		return Int;
+	} else if (ch == '0') {
+		ch = getchar();
+		if (ch == 'b') {
+			return lexInt(2);
+		} else if (ch == 'x') {
+			return lexInt(16);
+		} else {
+			ungetc(ch, stdin);
+			return lexInt(8);
+		}
+	} else if (isdigit(ch)) {
+		ungetc(ch, stdin);
+		return lexInt(10);
+	} else if (ch == '_' || islower(ch)) {
+		yylval = ch;
+		return Var;
+	} else if (ch == '<') {
+		char ne = getchar();
+		if (ne == '<') {
+			return Shl;
+		} else {
+			ungetc(ne, stdin);
+			return ch;
+		}
+	} else if (ch == '-' || ch == '>') {
+		char ne = getchar();
+		if (ne == '>') {
+			return (ch == '-' ? Sar : Shr);
+		} else {
+			ungetc(ne, stdin);
+			return ch;
+		}
+	} else {
+		return ch;
+	}
+}
+
+static void yyerror(const char *str) {
+	warnx("%s", str);
+}
+
+static const char *Codes[128] = {
+	"NUL", "SOH", "STX", "ETX", "EOT", "ENQ", "ACK", "BEL",
+	"BS",  "HT",  "NL",  "VT",  "NP",  "CR",  "SO",  "SI",
+	"DLE", "DC1", "DC2", "DC3", "DC4", "NAK", "SYN", "ETB",
+	"CAN", "EM",  "SUB", "ESC", "FS",  "GS",  "RS",  "US",
+	[127] = "DEL",
+};
+
+static void print(uint64_t val) {
+	int bits = val > UINT32_MAX ? 64
+		: val > UINT16_MAX ? 32
+		: val > UINT8_MAX ? 16
+		: 8;
+	printf("0x%0*"PRIX64" %"PRId64"", bits >> 2, val, (int64_t)val);
+	if (bits == 8) {
+		char bin[9] = {0};
+		for (int i = 0; i < 8; ++i) {
+			bin[i] = '0' + (val >> (7 - i) & 1);
+		}
+		printf(" %#"PRIo64" 0b%s", val, bin);
+	}
+	if (val < 128) {
+		if (isprint(val)) printf(" '%c'", (char)val);
+		if (Codes[val]) printf(" %s", Codes[val]);
+	}
+	if (val) {
+		if (!(val & MASK(40))) {
+			printf(" %"PRIu64"T", val >> 40);
+		} else if (!(val & MASK(30))) {
+			printf(" %"PRIu64"G", val >> 30);
+		} else if (!(val & MASK(20))) {
+			printf(" %"PRIu64"M", val >> 20);
+		} else if (!(val & MASK(10))) {
+			printf(" %"PRIu64"K", val >> 10);
+		}
+	}
+	printf("\n");
+}
+
+int main(void) {
+	while (yyparse());
+}
diff --git a/bin/bri.c b/bin/bri.c
new file mode 100644
index 00000000..81df2995
--- /dev/null
+++ b/bin/bri.c
@@ -0,0 +1,85 @@
+/* Copyright (C) 2017  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+typedef unsigned uint;
+
+static const char *Class = "/sys/class/backlight";
+
+int main(int argc, char *argv[]) {
+	int error;
+
+	const char *input = (argc > 1) ? argv[1] : NULL;
+
+	error = chdir(Class);
+	if (error) err(EX_OSFILE, "%s", Class);
+
+	DIR *dir = opendir(".");
+	if (!dir) err(EX_OSFILE, "%s", Class);
+
+	struct dirent *entry;
+	while (NULL != (errno = 0, entry = readdir(dir))) {
+		if (entry->d_name[0] == '.') continue;
+
+		error = chdir(entry->d_name);
+		if (error) err(EX_OSFILE, "%s/%s", Class, entry->d_name);
+		break;
+	}
+	if (!entry) {
+		if (errno) err(EX_IOERR, "%s", Class);
+		errx(EX_CONFIG, "%s: empty", Class);
+	}
+
+	FILE *actual = fopen("actual_brightness", "r");
+	if (!actual) err(EX_OSFILE, "actual_brightness");
+
+	uint value;
+	int match = fscanf(actual, "%u", &value);
+	if (match == EOF) err(EX_IOERR, "actual_brightness");
+	if (match < 1) errx(EX_DATAERR, "actual_brightness");
+
+	if (!input) {
+		printf("%u\n", value);
+		return EX_OK;
+	}
+
+	if (input[0] == '+' || input[0] == '-') {
+		size_t count = strnlen(input, 16);
+		if (input[0] == '+') {
+			value += 16 * count;
+		} else {
+			value -= 16 * count;
+		}
+	} else {
+		value = strtoul(input, NULL, 0);
+	}
+
+	FILE *brightness = fopen("brightness", "w");
+	if (!brightness) err(EX_OSFILE, "brightness");
+
+	int size = fprintf(brightness, "%u", value);
+	if (size < 0) err(EX_IOERR, "brightness");
+
+	return EX_OK;
+}
diff --git a/bin/c.sh b/bin/c.sh
new file mode 100644
index 00000000..ff059437
--- /dev/null
+++ b/bin/c.sh
@@ -0,0 +1,121 @@
+#!/bin/sh
+set -eu
+
+temp=$(mktemp -d)
+trap 'rm -r "${temp}"' EXIT
+
+exec 3>>"${temp}/run.c"
+
+cat >&3 <<EOF
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <wchar.h>
+#include <wctype.h>
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <strings.h>
+#include <unistd.h>
+EOF
+
+expr=
+type=
+while getopts 'e:i:t' opt; do
+	case "${opt}" in
+		(e) expr=$OPTARG;;
+		(i) echo "#include <${OPTARG}>" >&3;;
+		(t) type=1;;
+		(?) exit 1;;
+	esac
+done
+shift $((OPTIND - 1))
+
+cat >&3 <<EOF
+int main(int argc, char *argv[]) {
+	(void)argc;
+	(void)argv;
+	$*;
+EOF
+
+if [ -n "${type}" ]; then
+	cat >&3 <<EOF
+	printf(
+		_Generic(
+			${expr},
+			char: "(char) ",
+			char *: "(char *) ",
+			const char *: "(const char *) ",
+			wchar_t *: "(wchar_t *) ",
+			const wchar_t *: "(const wchar_t *) ",
+			signed char: "(signed char) ",
+			short: "(short) ",
+			int: "(int) ",
+			long: "(long) ",
+			long long: "(long long) ",
+			unsigned char: "(unsigned char) ",
+			unsigned short: "(unsigned short) ",
+			unsigned int: "(unsigned int) ",
+			unsigned long: "(unsigned long) ",
+			unsigned long long: "(unsigned long long) ",
+			float: "(float) ",
+			double: "(double) ",
+			long double: "(long double) ",
+			default: "(void *) "
+		)
+	);
+EOF
+fi
+
+if [ -n "${expr}" ]; then
+	cat >&3 <<EOF
+	printf(
+		_Generic(
+			${expr},
+			char: "%c\n",
+			char *: "%s\n",
+			const char *: "%s\n",
+			wchar_t *: "%ls\n",
+			const wchar_t *: "%ls\n",
+			signed char: "%hhd\n",
+			short: "%hd\n",
+			int: "%d\n",
+			long: "%ld\n",
+			long long: "%lld\n",
+			unsigned char: "%hhu\n",
+			unsigned short: "%hu\n",
+			unsigned int: "%u\n",
+			unsigned long: "%lu\n",
+			unsigned long long: "%llu\n",
+			float: "%g\n",
+			double: "%g\n",
+			long double: "%Lg\n",
+			default: "%p\n"
+		),
+		${expr}
+	);
+EOF
+fi
+
+if [ $# -eq 0 -a -z "${expr}" ]; then
+	cat >&3
+fi
+
+echo '}' >&3
+
+cat >"${temp}/Makefile" <<EOF
+CFLAGS += -Wall -Wextra -Wpedantic
+EOF
+
+make -s -C "${temp}" run
+"${temp}/run"
diff --git a/bin/c11.l b/bin/c11.l
new file mode 100644
index 00000000..b9490f2e
--- /dev/null
+++ b/bin/c11.l
@@ -0,0 +1,149 @@
+/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+%option prefix="c11"
+%option noyywrap
+
+%{
+#include "hilex.h"
+%}
+
+%s MacroLine MacroInclude
+%x CharLiteral StringLiteral
+
+ident [_[:alpha:]][_[:alnum:]]*
+width "*"|[0-9]+
+
+%%
+	static int pop = INITIAL;
+
+[[:blank:]]+ { return Normal; }
+
+^"%"[%{}]? {
+	BEGIN(pop = MacroLine);
+	return Macro;
+}
+
+([-+*/%&|^=!<>]|"<<"|">>")"="? |
+[=~.?:]|"["|"]"|"++"|"--"|"&&"|"||"|"->" |
+sizeof|(_A|alignof) {
+	return Operator;
+}
+
+([1-9][0-9]*|"0"[0-7]*|"0x"[[:xdigit:]]+)([ulUL]{0,3}) |
+([0-9]+("."[0-9]*)?|[0-9]*"."[0-9]+)([eE][+-]?[0-9]+)?[flFL]? |
+"0x"[[:xdigit:]]*("."[[:xdigit:]]*)?([pP][+-]?[0-9]+)[flFL]? {
+	return Number;
+}
+
+auto|break|case|const|continue|default|do|else|enum|extern|for|goto|if|inline |
+register|restrict|return|static|struct|switch|typedef|union|volatile|while |
+(_A|a)lignas|_Atomic|_Generic|(_N|n)oreturn|(_S|s)tatic_assert |
+(_T|t)hread_local {
+	return Keyword;
+}
+
+^"#"[[:blank:]]*(include|import) {
+	BEGIN(pop = MacroInclude);
+	return Macro;
+}
+^"#"[[:blank:]]*{ident} {
+	BEGIN(pop = MacroLine);
+	return Macro;
+}
+<MacroInclude>"<"[^>]+">" {
+	return String;
+}
+<MacroLine,MacroInclude>{
+	"\n" {
+		BEGIN(pop = INITIAL);
+		return Normal;
+	}
+	"\\\n" { return Macro; }
+	{ident} { return Macro; }
+}
+
+{ident} { return Ident; }
+
+"//"([^\n]|"\\\n")* |
+"/*"([^*]|"*"[^/])*"*"+"/" {
+	return Comment;
+}
+
+[LUu]?"'"/[^\\] {
+	BEGIN(CharLiteral);
+	yymore();
+}
+[LUu]?"'" {
+	BEGIN(CharLiteral);
+	return String;
+}
+([LU]|u8?)?"\""/[^\\%] {
+	BEGIN(StringLiteral);
+	yymore();
+}
+([LU]|u8?)?"\"" {
+	BEGIN(StringLiteral);
+	return String;
+}
+
+<CharLiteral,StringLiteral>{
+	"\\\n" |
+	"\\"[''""?\\abfnrtv] |
+	"\\"([0-7]{1,3}) |
+	"\\x"([[:xdigit:]]{2}) |
+	"\\u"([[:xdigit:]]{4}) |
+	"\\U"([[:xdigit:]]{8}) {
+		return Escape;
+	}
+}
+<StringLiteral>{
+	"%%" |
+	"%"[EO]?[ABCDFGHIMRSTUVWXYZabcdeghjmnprtuwxyz] |
+	"%"[ #+-0]*{width}?("."{width})?([Lhjltz]|hh|ll)?[AEFGXacdefginopsux] {
+		return Format;
+	}
+}
+
+<CharLiteral>{
+	[^\\'']*"'" {
+		BEGIN(pop);
+		return String;
+	}
+	[^\\'']+|. { return String; }
+}
+<StringLiteral>{
+	[^%\\""]*"\"" {
+		BEGIN(pop);
+		return String;
+	}
+	[^%\\""]+|. { return String; }
+}
+
+<MacroLine,MacroInclude>. {
+	return Macro;
+}
+
+.|\n { return Normal; }
+
+%{
+	(void)yyunput;
+	(void)input;
+%}
+
+%%
+
+const struct Lexer LexC = { yylex, &yyin, &yytext };
diff --git a/bin/dash/.gitignore b/bin/dash/.gitignore
new file mode 100644
index 00000000..63fccdc3
--- /dev/null
+++ b/bin/dash/.gitignore
@@ -0,0 +1,34 @@
+# .gitignore for dash
+
+# generated by autogen.sh
+/autom4te.cache/
+
+# generated by configure
+Makefile
+.deps
+.dirstamp
+/config.cache
+/config.h
+/config.log
+/config.status
+/stamp-h1
+
+# generated by make
+/src/token_vars.h
+
+# Apple debug symbol bundles
+*.dSYM/
+
+# backups and patch artefacts
+*~
+*.bak
+*.orig
+*.rej
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight*
+.Trash*
+*[Tt]humbs.db
diff --git a/COPYING b/bin/dash/COPYING
index 37f8189c..37f8189c 100644
--- a/COPYING
+++ b/bin/dash/COPYING
diff --git a/ChangeLog b/bin/dash/ChangeLog
index 406e20c0..406e20c0 100644
--- a/ChangeLog
+++ b/bin/dash/ChangeLog
diff --git a/ChangeLog.O b/bin/dash/ChangeLog.O
index dfdb2cec..dfdb2cec 100644
--- a/ChangeLog.O
+++ b/bin/dash/ChangeLog.O
diff --git a/Makefile.am b/bin/dash/Makefile.am
index af437a64..af437a64 100644
--- a/Makefile.am
+++ b/bin/dash/Makefile.am
diff --git a/bin/dash/Makefile.in b/bin/dash/Makefile.in
new file mode 100644
index 00000000..49084bfd
--- /dev/null
+++ b/bin/dash/Makefile.in
@@ -0,0 +1,776 @@
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
+  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
+  case $${target_option-} in \
+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
+              "target option '$${target_option-}' specified" >&2; \
+         exit 1;; \
+  esac; \
+  has_opt=no; \
+  sane_makeflags=$$MAKEFLAGS; \
+  if $(am__is_gnu_make); then \
+    sane_makeflags=$$MFLAGS; \
+  else \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        bs=\\; \
+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
+    esac; \
+  fi; \
+  skip_next=no; \
+  strip_trailopt () \
+  { \
+    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+  }; \
+  for flg in $$sane_makeflags; do \
+    test $$skip_next = yes && { skip_next=no; continue; }; \
+    case $$flg in \
+      *=*|--*) continue;; \
+        -*I) strip_trailopt 'I'; skip_next=yes;; \
+      -*I?*) strip_trailopt 'I';; \
+        -*O) strip_trailopt 'O'; skip_next=yes;; \
+      -*O?*) strip_trailopt 'O';; \
+        -*l) strip_trailopt 'l'; skip_next=yes;; \
+      -*l?*) strip_trailopt 'l';; \
+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
+    case $$flg in \
+      *$$target_option*) has_opt=yes; break;; \
+    esac; \
+  done; \
+  test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
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+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
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+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
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+am__aclocal_m4_deps = $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
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+	$(am__configure_deps) $(am__DIST_COMMON)
+am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
+ configure.lineno config.status.lineno
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+AM_V_P = $(am__v_P_@AM_V@)
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+	install-data-recursive install-dvi-recursive \
+	install-exec-recursive install-html-recursive \
+	install-info-recursive install-pdf-recursive \
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+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
+    *) (install-info --version) >/dev/null 2>&1;; \
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+  distclean-recursive maintainer-clean-recursive
+am__recursive_targets = \
+  $(RECURSIVE_TARGETS) \
+  $(RECURSIVE_CLEAN_TARGETS) \
+  $(am__extra_recursive_targets)
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+	cscope distdir distdir-am dist dist-all distcheck
+am__tagged_files = $(HEADERS) $(SOURCES) $(TAGS_FILES) $(LISP) \
+	config.h.in
+# Read a list of newline-separated strings from the standard input,
+# and print each of them once, without duplicates.  Input order is
+# *not* preserved.
+am__uniquify_input = $(AWK) '\
+  BEGIN { nonempty = 0; } \
+  { items[$$0] = 1; nonempty = 1; } \
+  END { if (nonempty) { for (i in items) print i; }; } \
+'
+# Make sure the list of sources is unique.  This is necessary because,
+# e.g., the same source file might be shared among _SOURCES variables
+# for different programs/libraries.
+am__define_uniq_tagged_files = \
+  list='$(am__tagged_files)'; \
+  unique=`for i in $$list; do \
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+ETAGS = etags
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+am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/config.h.in COPYING \
+	ChangeLog compile install-sh missing
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+distdir = $(PACKAGE)-$(VERSION)
+top_distdir = $(distdir)
+am__remove_distdir = \
+  if test -d "$(distdir)"; then \
+    find "$(distdir)" -type d ! -perm -200 -exec chmod u+w {} ';' \
+      && rm -rf "$(distdir)" \
+      || { sleep 5 && rm -rf "$(distdir)"; }; \
+  else :; fi
+am__post_remove_distdir = $(am__remove_distdir)
+am__relativize = \
+  dir0=`pwd`; \
+  sed_first='s,^\([^/]*\)/.*$$,\1,'; \
+  sed_rest='s,^[^/]*/*,,'; \
+  sed_last='s,^.*/\([^/]*\)$$,\1,'; \
+  sed_butlast='s,/*[^/]*$$,,'; \
+  while test -n "$$dir1"; do \
+    first=`echo "$$dir1" | sed -e "$$sed_first"`; \
+    if test "$$first" != "."; then \
+      if test "$$first" = ".."; then \
+        dir2=`echo "$$dir0" | sed -e "$$sed_last"`/"$$dir2"; \
+        dir0=`echo "$$dir0" | sed -e "$$sed_butlast"`; \
+      else \
+        first2=`echo "$$dir2" | sed -e "$$sed_first"`; \
+        if test "$$first2" = "$$first"; then \
+          dir2=`echo "$$dir2" | sed -e "$$sed_rest"`; \
+        else \
+          dir2="../$$dir2"; \
+        fi; \
+        dir0="$$dir0"/"$$first"; \
+      fi; \
+    fi; \
+    dir1=`echo "$$dir1" | sed -e "$$sed_rest"`; \
+  done; \
+  reldir="$$dir2"
+DIST_ARCHIVES = $(distdir).tar.gz
+GZIP_ENV = --best
+DIST_TARGETS = dist-gzip
+# Exists only to be overridden by the user if desired.
+AM_DISTCHECK_DVI_TARGET = dvi
+distuninstallcheck_listfiles = find . -type f -print
+am__distuninstallcheck_listfiles = $(distuninstallcheck_listfiles) \
+  | sed 's|^\./|$(prefix)/|' | grep -v '$(infodir)/dir$$'
+distcleancheck_listfiles = find . -type f -print
+ACLOCAL = @ACLOCAL@
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+
+stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
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+	($(am__cd) $(top_srcdir) && $(AUTOHEADER))
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+# To change the values of 'make' variables: instead of editing Makefiles,
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+	if $(am__make_keepgoing); then \
+	  failcom='fail=yes'; \
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+	esac; \
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+	  ($(am__cd) $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
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+	      "$$@" $$unique; \
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+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
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+cscopelist-am: $(am__tagged_files)
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+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
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+	-rm -f cscope.out cscope.in.out cscope.po.out cscope.files
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+distdir: $(BUILT_SOURCES)
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+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
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+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
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+			   sort -u` ;; \
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+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
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+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
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+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
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+	    $(am__make_dryrun) \
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+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
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+	-test -n "$(am__skip_mode_fix)" \
+	|| find "$(distdir)" -type d ! -perm -755 \
+		-exec chmod u+rwx,go+rx {} \; -o \
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+	|| chmod -R a+r "$(distdir)"
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+	tardir=$(distdir) && $(am__tar) | eval GZIP= gzip $(GZIP_ENV) -c >$(distdir).tar.gz
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+	$(am__post_remove_distdir)
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+dist-tarZ: distdir
+	@echo WARNING: "Support for distribution archives compressed with" \
+		       "legacy program 'compress' is deprecated." >&2
+	@echo WARNING: "It will be removed altogether in Automake 2.0" >&2
+	tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
+	$(am__post_remove_distdir)
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+dist-shar: distdir
+	@echo WARNING: "Support for shar distribution archives is" \
+	               "deprecated." >&2
+	@echo WARNING: "It will be removed altogether in Automake 2.0" >&2
+	shar $(distdir) | eval GZIP= gzip $(GZIP_ENV) -c >$(distdir).shar.gz
+	$(am__post_remove_distdir)
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+dist-zip: distdir
+	-rm -f $(distdir).zip
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+	$(am__post_remove_distdir)
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+dist dist-all:
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+
+# This target untars the dist file and tries a VPATH configuration.  Then
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+# tarfile.
+distcheck: dist
+	case '$(DIST_ARCHIVES)' in \
+	*.tar.gz*) \
+	  eval GZIP= gzip $(GZIP_ENV) -dc $(distdir).tar.gz | $(am__untar) ;;\
+	*.tar.bz2*) \
+	  bzip2 -dc $(distdir).tar.bz2 | $(am__untar) ;;\
+	*.tar.lz*) \
+	  lzip -dc $(distdir).tar.lz | $(am__untar) ;;\
+	*.tar.xz*) \
+	  xz -dc $(distdir).tar.xz | $(am__untar) ;;\
+	*.tar.Z*) \
+	  uncompress -c $(distdir).tar.Z | $(am__untar) ;;\
+	*.shar.gz*) \
+	  eval GZIP= gzip $(GZIP_ENV) -dc $(distdir).shar.gz | unshar ;;\
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+	  unzip $(distdir).zip ;;\
+	*.tar.zst*) \
+	  zstd -dc $(distdir).tar.zst | $(am__untar) ;;\
+	esac
+	chmod -R a-w $(distdir)
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+	mkdir $(distdir)/_build $(distdir)/_build/sub $(distdir)/_inst
+	chmod a-w $(distdir)
+	test -d $(distdir)/_build || exit 0; \
+	dc_install_base=`$(am__cd) $(distdir)/_inst && pwd | sed -e 's,^[^:\\/]:[\\/],/,'` \
+	  && dc_destdir="$${TMPDIR-/tmp}/am-dc-$$$$/" \
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+	  && $(am__cd) $(distdir)/_build/sub \
+	  && ../../configure \
+	    $(AM_DISTCHECK_CONFIGURE_FLAGS) \
+	    $(DISTCHECK_CONFIGURE_FLAGS) \
+	    --srcdir=../.. --prefix="$$dc_install_base" \
+	  && $(MAKE) $(AM_MAKEFLAGS) \
+	  && $(MAKE) $(AM_MAKEFLAGS) $(AM_DISTCHECK_DVI_TARGET) \
+	  && $(MAKE) $(AM_MAKEFLAGS) check \
+	  && $(MAKE) $(AM_MAKEFLAGS) install \
+	  && $(MAKE) $(AM_MAKEFLAGS) installcheck \
+	  && $(MAKE) $(AM_MAKEFLAGS) uninstall \
+	  && $(MAKE) $(AM_MAKEFLAGS) distuninstallcheck_dir="$$dc_install_base" \
+	        distuninstallcheck \
+	  && chmod -R a-w "$$dc_install_base" \
+	  && ({ \
+	       (cd ../.. && umask 077 && mkdir "$$dc_destdir") \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" install \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" uninstall \
+	       && $(MAKE) $(AM_MAKEFLAGS) DESTDIR="$$dc_destdir" \
+	            distuninstallcheck_dir="$$dc_destdir" distuninstallcheck; \
+	      } || { rm -rf "$$dc_destdir"; exit 1; }) \
+	  && rm -rf "$$dc_destdir" \
+	  && $(MAKE) $(AM_MAKEFLAGS) dist \
+	  && rm -rf $(DIST_ARCHIVES) \
+	  && $(MAKE) $(AM_MAKEFLAGS) distcleancheck \
+	  && cd "$$am__cwd" \
+	  || exit 1
+	$(am__post_remove_distdir)
+	@(echo "$(distdir) archives ready for distribution: "; \
+	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
+	  sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
+distuninstallcheck:
+	@test -n '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: trying to run $@ with an empty' \
+	       '$$(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	$(am__cd) '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: cannot chdir into $(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
+	   || { echo "ERROR: files left after uninstall:" ; \
+	        if test -n "$(DESTDIR)"; then \
+	          echo "  (check DESTDIR support)"; \
+	        fi ; \
+	        $(distuninstallcheck_listfiles) ; \
+	        exit 1; } >&2
+distcleancheck: distclean
+	@if test '$(srcdir)' = . ; then \
+	  echo "ERROR: distcleancheck can only run from a VPATH build" ; \
+	  exit 1 ; \
+	fi
+	@test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
+	  || { echo "ERROR: files left in build directory after distclean:" ; \
+	       $(distcleancheck_listfiles) ; \
+	       exit 1; } >&2
+check-am: all-am
+check: check-recursive
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+install-am: all-am
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+
+installcheck: installcheck-recursive
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-generic mostlyclean-am
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+distclean: distclean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -f Makefile
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+maintainer-clean: maintainer-clean-recursive
+	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
+	-rm -rf $(top_srcdir)/autom4te.cache
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new file mode 100644
index 00000000..6715ee0e
--- /dev/null
+++ b/bin/dash/aclocal.m4
@@ -0,0 +1,1132 @@
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+			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_CXX],
+		  [_AM_DEPENDENCIES([CXX])],
+		  [m4_define([AC_PROG_CXX],
+			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_OBJC],
+		  [_AM_DEPENDENCIES([OBJC])],
+		  [m4_define([AC_PROG_OBJC],
+			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
+AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
+		  [_AM_DEPENDENCIES([OBJCXX])],
+		  [m4_define([AC_PROG_OBJCXX],
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+])
+AC_REQUIRE([AM_SILENT_RULES])dnl
+dnl The testsuite driver may need to know about EXEEXT, so add the
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+AC_CONFIG_COMMANDS_PRE(dnl
+[m4_provide_if([_AM_COMPILER_EXEEXT],
+  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
+
+# POSIX will say in a future version that running "rm -f" with no argument
+# is OK; and we want to be able to make that assumption in our Makefile
+# recipes.  So use an aggressive probe to check that the usage we want is
+# actually supported "in the wild" to an acceptable degree.
+# See automake bug#10828.
+# To make any issue more visible, cause the running configure to be aborted
+# by default if the 'rm' program in use doesn't match our expectations; the
+# user can still override this though.
+if rm -f && rm -fr && rm -rf; then : OK; else
+  cat >&2 <<'END'
+Oops!
+
+Your 'rm' program seems unable to run without file operands specified
+on the command line, even when the '-f' option is present.  This is contrary
+to the behaviour of most rm programs out there, and not conforming with
+the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
+
+Please tell bug-automake@gnu.org about your system, including the value
+of your $PATH and any error possibly output before this message.  This
+can help us improve future automake versions.
+
+END
+  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
+    echo 'Configuration will proceed anyway, since you have set the' >&2
+    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
+    echo >&2
+  else
+    cat >&2 <<'END'
+Aborting the configuration process, to ensure you take notice of the issue.
+
+You can download and install GNU coreutils to get an 'rm' implementation
+that behaves properly: <https://www.gnu.org/software/coreutils/>.
+
+If you want to complete the configuration process using your problematic
+'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
+to "yes", and re-run configure.
+
+END
+    AC_MSG_ERROR([Your 'rm' program is bad, sorry.])
+  fi
+fi
+dnl The trailing newline in this macro's definition is deliberate, for
+dnl backward compatibility and to allow trailing 'dnl'-style comments
+dnl after the AM_INIT_AUTOMAKE invocation. See automake bug#16841.
+])
+
+dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
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+m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
+
+# When config.status generates a header, we must update the stamp-h file.
+# This file resides in the same directory as the config header
+# that is generated.  The stamp files are numbered to have different names.
+
+# Autoconf calls _AC_AM_CONFIG_HEADER_HOOK (when defined) in the
+# loop where config.status creates the headers, so we can generate
+# our stamp files there.
+AC_DEFUN([_AC_AM_CONFIG_HEADER_HOOK],
+[# Compute $1's index in $config_headers.
+_am_arg=$1
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $_am_arg | $_am_arg:* )
+      break ;;
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+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
+
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_SH
+# ------------------
+# Define $install_sh.
+AC_DEFUN([AM_PROG_INSTALL_SH],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+if test x"${install_sh+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+AC_SUBST([install_sh])])
+
+# Copyright (C) 2003-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Check whether the underlying file-system supports filenames
+# with a leading dot.  For instance MS-DOS doesn't.
+AC_DEFUN([AM_SET_LEADING_DOT],
+[rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+AC_SUBST([am__leading_dot])])
+
+# Check to see how 'make' treats includes.	            -*- Autoconf -*-
+
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_MAKE_INCLUDE()
+# -----------------
+# Check whether make has an 'include' directive that can support all
+# the idioms we need for our automatic dependency tracking code.
+AC_DEFUN([AM_MAKE_INCLUDE],
+[AC_MSG_CHECKING([whether ${MAKE-make} supports the include directive])
+cat > confinc.mk << 'END'
+am__doit:
+	@echo this is the am__doit target >confinc.out
+.PHONY: am__doit
+END
+am__include="#"
+am__quote=
+# BSD make does it like this.
+echo '.include "confinc.mk" # ignored' > confmf.BSD
+# Other make implementations (GNU, Solaris 10, AIX) do it like this.
+echo 'include confinc.mk # ignored' > confmf.GNU
+_am_result=no
+for s in GNU BSD; do
+  AM_RUN_LOG([${MAKE-make} -f confmf.$s && cat confinc.out])
+  AS_CASE([$?:`cat confinc.out 2>/dev/null`],
+      ['0:this is the am__doit target'],
+      [AS_CASE([$s],
+          [BSD], [am__include='.include' am__quote='"'],
+          [am__include='include' am__quote=''])])
+  if test "$am__include" != "#"; then
+    _am_result="yes ($s style)"
+    break
+  fi
+done
+rm -f confinc.* confmf.*
+AC_MSG_RESULT([${_am_result}])
+AC_SUBST([am__include])])
+AC_SUBST([am__quote])])
+
+# Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
+
+# Copyright (C) 1997-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_MISSING_PROG(NAME, PROGRAM)
+# ------------------------------
+AC_DEFUN([AM_MISSING_PROG],
+[AC_REQUIRE([AM_MISSING_HAS_RUN])
+$1=${$1-"${am_missing_run}$2"}
+AC_SUBST($1)])
+
+# AM_MISSING_HAS_RUN
+# ------------------
+# Define MISSING if not defined so far and test if it is modern enough.
+# If it is, set am_missing_run to use it, otherwise, to nothing.
+AC_DEFUN([AM_MISSING_HAS_RUN],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([missing])dnl
+if test x"${MISSING+set}" != xset; then
+  MISSING="\${SHELL} '$am_aux_dir/missing'"
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --is-lightweight"; then
+  am_missing_run="$MISSING "
+else
+  am_missing_run=
+  AC_MSG_WARN(['missing' script is too old or missing])
+fi
+])
+
+# Helper functions for option handling.                     -*- Autoconf -*-
+
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_MANGLE_OPTION(NAME)
+# -----------------------
+AC_DEFUN([_AM_MANGLE_OPTION],
+[[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
+
+# _AM_SET_OPTION(NAME)
+# --------------------
+# Set option NAME.  Presently that only means defining a flag for this option.
+AC_DEFUN([_AM_SET_OPTION],
+[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
+
+# _AM_SET_OPTIONS(OPTIONS)
+# ------------------------
+# OPTIONS is a space-separated list of Automake options.
+AC_DEFUN([_AM_SET_OPTIONS],
+[m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
+
+# _AM_IF_OPTION(OPTION, IF-SET, [IF-NOT-SET])
+# -------------------------------------------
+# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
+AC_DEFUN([_AM_IF_OPTION],
+[m4_ifset(_AM_MANGLE_OPTION([$1]), [$2], [$3])])
+
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_PROG_CC_C_O
+# ---------------
+# Like AC_PROG_CC_C_O, but changed for automake.  We rewrite AC_PROG_CC
+# to automatically call this.
+AC_DEFUN([_AM_PROG_CC_C_O],
+[AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+AC_REQUIRE_AUX_FILE([compile])dnl
+AC_LANG_PUSH([C])dnl
+AC_CACHE_CHECK(
+  [whether $CC understands -c and -o together],
+  [am_cv_prog_cc_c_o],
+  [AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
+  # Make sure it works both with $CC and with simple cc.
+  # Following AC_PROG_CC_C_O, we do the test twice because some
+  # compilers refuse to overwrite an existing .o file with -o,
+  # though they will create one.
+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if AM_RUN_LOG([$CC -c conftest.$ac_ext -o conftest2.$ac_objext]) \
+         && test -f conftest2.$ac_objext; then
+      : OK
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+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i])
+if test "$am_cv_prog_cc_c_o" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+AC_LANG_POP([C])])
+
+# For backward compatibility.
+AC_DEFUN_ONCE([AM_PROG_CC_C_O], [AC_REQUIRE([AC_PROG_CC])])
+
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_RUN_LOG(COMMAND)
+# -------------------
+# Run COMMAND, save the exit status in ac_status, and log it.
+# (This has been adapted from Autoconf's _AC_RUN_LOG macro.)
+AC_DEFUN([AM_RUN_LOG],
+[{ echo "$as_me:$LINENO: $1" >&AS_MESSAGE_LOG_FD
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+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
+   (exit $ac_status); }])
+
+# Check to make sure that the build environment is sane.    -*- Autoconf -*-
+
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_SANITY_CHECK
+# ---------------
+AC_DEFUN([AM_SANITY_CHECK],
+[AC_MSG_CHECKING([whether build environment is sane])
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[[\\\"\#\$\&\'\`$am_lf]]*)
+    AC_MSG_ERROR([unsafe absolute working directory name]);;
+esac
+case $srcdir in
+  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
+    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
+esac
+
+# Do 'set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   am_has_slept=no
+   for am_try in 1 2; do
+     echo "timestamp, slept: $am_has_slept" > conftest.file
+     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+     if test "$[*]" = "X"; then
+	# -L didn't work.
+	set X `ls -t "$srcdir/configure" conftest.file`
+     fi
+     if test "$[*]" != "X $srcdir/configure conftest.file" \
+	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
+
+	# If neither matched, then we have a broken ls.  This can happen
+	# if, for instance, CONFIG_SHELL is bash and it inherits a
+	# broken ls alias from the environment.  This has actually
+	# happened.  Such a system could not be considered "sane".
+	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+  alias in your environment])
+     fi
+     if test "$[2]" = conftest.file || test $am_try -eq 2; then
+       break
+     fi
+     # Just in case.
+     sleep 1
+     am_has_slept=yes
+   done
+   test "$[2]" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   AC_MSG_ERROR([newly created file is older than distributed files!
+Check your system clock])
+fi
+AC_MSG_RESULT([yes])
+# If we didn't sleep, we still need to ensure time stamps of config.status and
+# generated files are strictly newer.
+am_sleep_pid=
+if grep 'slept: no' conftest.file >/dev/null 2>&1; then
+  ( sleep 1 ) &
+  am_sleep_pid=$!
+fi
+AC_CONFIG_COMMANDS_PRE(
+  [AC_MSG_CHECKING([that generated files are newer than configure])
+   if test -n "$am_sleep_pid"; then
+     # Hide warnings about reused PIDs.
+     wait $am_sleep_pid 2>/dev/null
+   fi
+   AC_MSG_RESULT([done])])
+rm -f conftest.file
+])
+
+# Copyright (C) 2009-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_SILENT_RULES([DEFAULT])
+# --------------------------
+# Enable less verbose build rules; with the default set to DEFAULT
+# ("yes" being less verbose, "no" or empty being verbose).
+AC_DEFUN([AM_SILENT_RULES],
+[AC_ARG_ENABLE([silent-rules], [dnl
+AS_HELP_STRING(
+  [--enable-silent-rules],
+  [less verbose build output (undo: "make V=1")])
+AS_HELP_STRING(
+  [--disable-silent-rules],
+  [verbose build output (undo: "make V=0")])dnl
+])
+case $enable_silent_rules in @%:@ (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
+esac
+dnl
+dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
+dnl do not support nested variable expansions.
+dnl See automake bug#9928 and bug#10237.
+am_make=${MAKE-make}
+AC_CACHE_CHECK([whether $am_make supports nested variables],
+   [am_cv_make_support_nested_variables],
+   [if AS_ECHO([['TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit']]) | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi])
+if test $am_cv_make_support_nested_variables = yes; then
+  dnl Using '$V' instead of '$(V)' breaks IRIX make.
+  AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AC_SUBST([AM_V])dnl
+AM_SUBST_NOTMAKE([AM_V])dnl
+AC_SUBST([AM_DEFAULT_V])dnl
+AM_SUBST_NOTMAKE([AM_DEFAULT_V])dnl
+AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
+AM_BACKSLASH='\'
+AC_SUBST([AM_BACKSLASH])dnl
+_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
+])
+
+# Copyright (C) 2001-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# AM_PROG_INSTALL_STRIP
+# ---------------------
+# One issue with vendor 'install' (even GNU) is that you can't
+# specify the program used to strip binaries.  This is especially
+# annoying in cross-compiling environments, where the build's strip
+# is unlikely to handle the host's binaries.
+# Fortunately install-sh will honor a STRIPPROG variable, so we
+# always use install-sh in "make install-strip", and initialize
+# STRIPPROG with the value of the STRIP variable (set by the user).
+AC_DEFUN([AM_PROG_INSTALL_STRIP],
+[AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+# Installed binaries are usually stripped using 'strip' when the user
+# run "make install-strip".  However 'strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the 'STRIP' environment variable to overrule this program.
+dnl Don't test for $cross_compiling = yes, because it might be 'maybe'.
+if test "$cross_compiling" != no; then
+  AC_CHECK_TOOL([STRIP], [strip], :)
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+AC_SUBST([INSTALL_STRIP_PROGRAM])])
+
+# Copyright (C) 2006-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
+# This macro is traced by Automake.
+AC_DEFUN([_AM_SUBST_NOTMAKE])
+
+# AM_SUBST_NOTMAKE(VARIABLE)
+# --------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
+# Check how to create a tarball.                            -*- Autoconf -*-
+
+# Copyright (C) 2004-2020 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# _AM_PROG_TAR(FORMAT)
+# --------------------
+# Check how to create a tarball in format FORMAT.
+# FORMAT should be one of 'v7', 'ustar', or 'pax'.
+#
+# Substitute a variable $(am__tar) that is a command
+# writing to stdout a FORMAT-tarball containing the directory
+# $tardir.
+#     tardir=directory && $(am__tar) > result.tar
+#
+# Substitute a variable $(am__untar) that extract such
+# a tarball read from stdin.
+#     $(am__untar) < result.tar
+#
+AC_DEFUN([_AM_PROG_TAR],
+[# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AC_SUBST([AMTAR], ['$${TAR-tar}'])
+
+# We'll loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar m4_if([$1], [ustar], [plaintar]) pax cpio none'
+
+m4_if([$1], [v7],
+  [am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'],
+
+  [m4_case([$1],
+    [ustar],
+     [# The POSIX 1988 'ustar' format is defined with fixed-size fields.
+      # There is notably a 21 bits limit for the UID and the GID.  In fact,
+      # the 'pax' utility can hang on bigger UID/GID (see automake bug#8343
+      # and bug#13588).
+      am_max_uid=2097151 # 2^21 - 1
+      am_max_gid=$am_max_uid
+      # The $UID and $GID variables are not portable, so we need to resort
+      # to the POSIX-mandated id(1) utility.  Errors in the 'id' calls
+      # below are definitely unexpected, so allow the users to see them
+      # (that is, avoid stderr redirection).
+      am_uid=`id -u || echo unknown`
+      am_gid=`id -g || echo unknown`
+      AC_MSG_CHECKING([whether UID '$am_uid' is supported by ustar format])
+      if test $am_uid -le $am_max_uid; then
+         AC_MSG_RESULT([yes])
+      else
+         AC_MSG_RESULT([no])
+         _am_tools=none
+      fi
+      AC_MSG_CHECKING([whether GID '$am_gid' is supported by ustar format])
+      if test $am_gid -le $am_max_gid; then
+         AC_MSG_RESULT([yes])
+      else
+        AC_MSG_RESULT([no])
+        _am_tools=none
+      fi],
+
+  [pax],
+    [],
+
+  [m4_fatal([Unknown tar format])])
+
+  AC_MSG_CHECKING([how to create a $1 tar archive])
+
+  # Go ahead even if we have the value already cached.  We do so because we
+  # need to set the values for the 'am__tar' and 'am__untar' variables.
+  _am_tools=${am_cv_prog_tar_$1-$_am_tools}
+
+  for _am_tool in $_am_tools; do
+    case $_am_tool in
+    gnutar)
+      for _am_tar in tar gnutar gtar; do
+        AM_RUN_LOG([$_am_tar --version]) && break
+      done
+      am__tar="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$$tardir"'
+      am__tar_="$_am_tar --format=m4_if([$1], [pax], [posix], [$1]) -chf - "'"$tardir"'
+      am__untar="$_am_tar -xf -"
+      ;;
+    plaintar)
+      # Must skip GNU tar: if it does not support --format= it doesn't create
+      # ustar tarball either.
+      (tar --version) >/dev/null 2>&1 && continue
+      am__tar='tar chf - "$$tardir"'
+      am__tar_='tar chf - "$tardir"'
+      am__untar='tar xf -'
+      ;;
+    pax)
+      am__tar='pax -L -x $1 -w "$$tardir"'
+      am__tar_='pax -L -x $1 -w "$tardir"'
+      am__untar='pax -r'
+      ;;
+    cpio)
+      am__tar='find "$$tardir" -print | cpio -o -H $1 -L'
+      am__tar_='find "$tardir" -print | cpio -o -H $1 -L'
+      am__untar='cpio -i -H $1 -d'
+      ;;
+    none)
+      am__tar=false
+      am__tar_=false
+      am__untar=false
+      ;;
+    esac
+
+    # If the value was cached, stop now.  We just wanted to have am__tar
+    # and am__untar set.
+    test -n "${am_cv_prog_tar_$1}" && break
+
+    # tar/untar a dummy directory, and stop if the command works.
+    rm -rf conftest.dir
+    mkdir conftest.dir
+    echo GrepMe > conftest.dir/file
+    AM_RUN_LOG([tardir=conftest.dir && eval $am__tar_ >conftest.tar])
+    rm -rf conftest.dir
+    if test -s conftest.tar; then
+      AM_RUN_LOG([$am__untar <conftest.tar])
+      AM_RUN_LOG([cat conftest.dir/file])
+      grep GrepMe conftest.dir/file >/dev/null 2>&1 && break
+    fi
+  done
+  rm -rf conftest.dir
+
+  AC_CACHE_VAL([am_cv_prog_tar_$1], [am_cv_prog_tar_$1=$_am_tool])
+  AC_MSG_RESULT([$am_cv_prog_tar_$1])])
+
+AC_SUBST([am__tar])
+AC_SUBST([am__untar])
+]) # _AM_PROG_TAR
+
diff --git a/autogen.sh b/bin/dash/autogen.sh
index 9879c53e..5e9006ca 100755
--- a/autogen.sh
+++ b/bin/dash/autogen.sh
@@ -2,5 +2,5 @@
 
 aclocal \
 && autoheader \
-&& automake --add-missing \
+&& automake --add-missing --copy \
 && autoconf
diff --git a/bin/dash/compile b/bin/dash/compile
new file mode 100755
index 00000000..23fcba01
--- /dev/null
+++ b/bin/dash/compile
@@ -0,0 +1,348 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN* | MSYS*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/* | msys/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
+  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/bin/dash/config.h.in b/bin/dash/config.h.in
new file mode 100644
index 00000000..6fb0b3fb
--- /dev/null
+++ b/bin/dash/config.h.in
@@ -0,0 +1,205 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if __attribute__((__alias__())) is supported */
+#undef HAVE_ALIAS_ATTRIBUTE
+
+/* Define to 1 if you have the <alloca.h> header file. */
+#undef HAVE_ALLOCA_H
+
+/* Define to 1 if you have the `bsearch' function. */
+#undef HAVE_BSEARCH
+
+/* Define to 1 if you have the declaration of `isblank', and to 0 if you
+   don't. */
+#undef HAVE_DECL_ISBLANK
+
+/* Define to 1 if you have the `faccessat' function. */
+#undef HAVE_FACCESSAT
+
+/* Define to 1 if you have the `fnmatch' function. */
+#undef HAVE_FNMATCH
+
+/* Define to 1 if you have the `getpwnam' function. */
+#undef HAVE_GETPWNAM
+
+/* Define to 1 if you have the `getrlimit' function. */
+#undef HAVE_GETRLIMIT
+
+/* Define to 1 if you have the `glob' function. */
+#undef HAVE_GLOB
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `isalpha' function. */
+#undef HAVE_ISALPHA
+
+/* Define to 1 if you have the `killpg' function. */
+#undef HAVE_KILLPG
+
+/* Define to 1 if you have the <memory.h> header file. */
+#undef HAVE_MEMORY_H
+
+/* Define to 1 if you have the `mempcpy' function. */
+#undef HAVE_MEMPCPY
+
+/* Define to 1 if you have the <paths.h> header file. */
+#undef HAVE_PATHS_H
+
+/* Define to 1 if you have the `sigsetmask' function. */
+#undef HAVE_SIGSETMASK
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `stpcpy' function. */
+#undef HAVE_STPCPY
+
+/* Define to 1 if you have the `strchrnul' function. */
+#undef HAVE_STRCHRNUL
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the `strsignal' function. */
+#undef HAVE_STRSIGNAL
+
+/* Define to 1 if you have the `strtod' function. */
+#undef HAVE_STRTOD
+
+/* Define to 1 if you have the `strtoimax' function. */
+#undef HAVE_STRTOIMAX
+
+/* Define to 1 if you have the `strtoumax' function. */
+#undef HAVE_STRTOUMAX
+
+/* Define if your `struct stat' has `st_mtim' */
+#undef HAVE_ST_MTIM
+
+/* Define to 1 if you have the `sysconf' function. */
+#undef HAVE_SYSCONF
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define if your faccessat tells root all files are executable */
+#undef HAVE_TRADITIONAL_FACCESSAT
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `_el_fn_sh_complete' function. */
+#undef HAVE__EL_FN_SH_COMPLETE
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Define to printf format string for intmax_t */
+#undef PRIdMAX
+
+/* The size of `intmax_t', as computed by sizeof. */
+#undef SIZEOF_INTMAX_T
+
+/* The size of `long long int', as computed by sizeof. */
+#undef SIZEOF_LONG_LONG_INT
+
+/* Define if you build with -DSMALL */
+#undef SMALL
+
+/* Define to 1 if you have the ANSI C header files. */
+#undef STDC_HEADERS
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable threading extensions on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+
+
+/* Version number of package */
+#undef VERSION
+
+/* Define if you build with -DWITH_LINENO */
+#undef WITH_LINENO
+
+/* Define to 1 if on MINIX. */
+#undef _MINIX
+
+/* Define to system shell path */
+#undef _PATH_BSHELL
+
+/* Define to devnull device node path */
+#undef _PATH_DEVNULL
+
+/* Define to tty device node path */
+#undef _PATH_TTY
+
+/* Define to 2 if the system does not provide POSIX.1 features except with
+   this defined. */
+#undef _POSIX_1_SOURCE
+
+/* Define to 1 if you need to in order for `stat' and other things to work. */
+#undef _POSIX_SOURCE
+
+/* 64-bit operations are the same as 32-bit */
+#undef dirent64
+
+/* 64-bit operations are the same as 32-bit */
+#undef fstat64
+
+/* 64-bit operations are the same as 32-bit */
+#undef lstat64
+
+/* 64-bit operations are the same as 32-bit */
+#undef open64
+
+/* 64-bit operations are the same as 32-bit */
+#undef readdir64
+
+/* klibc has bsd_signal instead of signal */
+#undef signal
+
+/* 64-bit operations are the same as 32-bit */
+#undef stat64
diff --git a/bin/dash/configure b/bin/dash/configure
new file mode 100755
index 00000000..83889b3b
--- /dev/null
+++ b/bin/dash/configure
@@ -0,0 +1,6450 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.69 for dash 0.5.11.2.
+#
+#
+# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.
+#
+#
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+# Use a proper internal environment variable to ensure we don't fall
+  # into an infinite loop, continuously re-executing ourselves.
+  if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then
+    _as_can_reexec=no; export _as_can_reexec;
+    # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+as_fn_exit 255
+  fi
+  # We don't want this to propagate to other subprocesses.
+          { _as_can_reexec=; unset _as_can_reexec;}
+if test "x$CONFIG_SHELL" = x; then
+  as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '\${1+\"\$@\"}'='\"\$@\"'
+  setopt NO_GLOB_SUBST
+else
+  case \`(set -o) 2>/dev/null\` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+"
+  as_required="as_fn_return () { (exit \$1); }
+as_fn_success () { as_fn_return 0; }
+as_fn_failure () { as_fn_return 1; }
+as_fn_ret_success () { return 0; }
+as_fn_ret_failure () { return 1; }
+
+exitcode=0
+as_fn_success || { exitcode=1; echo as_fn_success failed.; }
+as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; }
+as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; }
+as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; }
+if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then :
+
+else
+  exitcode=1; echo positional parameters were not saved.
+fi
+test x\$exitcode = x0 || exit 1
+test -x / || exit 1"
+  as_suggested="  as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO
+  as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO
+  eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" &&
+  test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1
+test \$(( 1 + 1 )) = 2 || exit 1"
+  if (eval "$as_required") 2>/dev/null; then :
+  as_have_required=yes
+else
+  as_have_required=no
+fi
+  if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then :
+
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+as_found=false
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  as_found=:
+  case $as_dir in #(
+	 /*)
+	   for as_base in sh bash ksh sh5; do
+	     # Try only shells that exist, to save several forks.
+	     as_shell=$as_dir/$as_base
+	     if { test -f "$as_shell" || test -f "$as_shell.exe"; } &&
+		    { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  CONFIG_SHELL=$as_shell as_have_required=yes
+		   if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then :
+  break 2
+fi
+fi
+	   done;;
+       esac
+  as_found=false
+done
+$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } &&
+	      { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then :
+  CONFIG_SHELL=$SHELL as_have_required=yes
+fi; }
+IFS=$as_save_IFS
+
+
+      if test "x$CONFIG_SHELL" != x; then :
+  export CONFIG_SHELL
+             # We cannot yet assume a decent shell, so we have to provide a
+# neutralization value for shells without unset; and this also
+# works around shells that cannot unset nonexistent variables.
+# Preserve -v and -x to the replacement shell.
+BASH_ENV=/dev/null
+ENV=/dev/null
+(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV
+case $- in # ((((
+  *v*x* | *x*v* ) as_opts=-vx ;;
+  *v* ) as_opts=-v ;;
+  *x* ) as_opts=-x ;;
+  * ) as_opts= ;;
+esac
+exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"}
+# Admittedly, this is quite paranoid, since all the known shells bail
+# out after a failed `exec'.
+$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2
+exit 255
+fi
+
+    if test x$as_have_required = xno; then :
+  $as_echo "$0: This script requires a shell more modern than all"
+  $as_echo "$0: the shells that I found on your system."
+  if test x${ZSH_VERSION+set} = xset ; then
+    $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should"
+    $as_echo "$0: be upgraded to zsh 4.3.4 or later."
+  else
+    $as_echo "$0: Please tell bug-autoconf@gnu.org about your system,
+$0: including any error possibly output before this
+$0: message. Then install a modern shell, or manually run
+$0: the script under such a shell if you do have one."
+  fi
+  exit 1
+fi
+fi
+fi
+SHELL=${CONFIG_SHELL-/bin/sh}
+export SHELL
+# Unset more variables known to interfere with behavior of common tools.
+CLICOLOR_FORCE= GREP_OPTIONS=
+unset CLICOLOR_FORCE GREP_OPTIONS
+
+## --------------------- ##
+## M4sh Shell Functions. ##
+## --------------------- ##
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+
+  as_lineno_1=$LINENO as_lineno_1a=$LINENO
+  as_lineno_2=$LINENO as_lineno_2a=$LINENO
+  eval 'test "x$as_lineno_1'$as_run'" != "x$as_lineno_2'$as_run'" &&
+  test "x`expr $as_lineno_1'$as_run' + 1`" = "x$as_lineno_2'$as_run'"' || {
+  # Blame Lee E. McMahon (1931-1989) for sed's syntax.  :-)
+  sed -n '
+    p
+    /[$]LINENO/=
+  ' <$as_myself |
+    sed '
+      s/[$]LINENO.*/&-/
+      t lineno
+      b
+      :lineno
+      N
+      :loop
+      s/[$]LINENO\([^'$as_cr_alnum'_].*\n\)\(.*\)/\2\1\2/
+      t loop
+      s/-\n.*//
+    ' >$as_me.lineno &&
+  chmod +x "$as_me.lineno" ||
+    { $as_echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2; as_fn_exit 1; }
+
+  # If we had to re-execute with $CONFIG_SHELL, we're ensured to have
+  # already done that, so ensure we don't try to do so again and fall
+  # in an infinite loop.  This has already happened in practice.
+  _as_can_reexec=no; export _as_can_reexec
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensitive to this).
+  . "./$as_me.lineno"
+  # Exit status is that of the last command.
+  exit
+}
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+test -n "$DJDIR" || exec 7<&0 </dev/null
+exec 6>&1
+
+# Name of the host.
+# hostname on some systems (SVR3.2, old GNU/Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_clean_files=
+ac_config_libobj_dir=.
+LIBOBJS=
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+
+# Identity of this package.
+PACKAGE_NAME='dash'
+PACKAGE_TARNAME='dash'
+PACKAGE_VERSION='0.5.11.2'
+PACKAGE_STRING='dash 0.5.11.2'
+PACKAGE_BUGREPORT=''
+PACKAGE_URL=''
+
+ac_unique_file="src/main.c"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_STRING_H
+# if !defined STDC_HEADERS && defined HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='am__EXEEXT_FALSE
+am__EXEEXT_TRUE
+LTLIBOBJS
+LIBOBJS
+CC_FOR_BUILD
+EGREP
+GREP
+CPP
+am__fastdepCC_FALSE
+am__fastdepCC_TRUE
+CCDEPMODE
+am__nodep
+AMDEPBACKSLASH
+AMDEP_FALSE
+AMDEP_TRUE
+am__include
+DEPDIR
+OBJEXT
+EXEEXT
+ac_ct_CC
+CPPFLAGS
+LDFLAGS
+CFLAGS
+CC
+AM_BACKSLASH
+AM_DEFAULT_VERBOSITY
+AM_DEFAULT_V
+AM_V
+am__untar
+am__tar
+AMTAR
+am__leading_dot
+SET_MAKE
+AWK
+mkdir_p
+MKDIR_P
+INSTALL_STRIP_PROGRAM
+STRIP
+install_sh
+MAKEINFO
+AUTOHEADER
+AUTOMAKE
+AUTOCONF
+ACLOCAL
+VERSION
+PACKAGE
+CYGPATH_W
+am__isrc
+INSTALL_DATA
+INSTALL_SCRIPT
+INSTALL_PROGRAM
+target_alias
+host_alias
+build_alias
+LIBS
+ECHO_T
+ECHO_N
+ECHO_C
+DEFS
+mandir
+localedir
+libdir
+psdir
+pdfdir
+dvidir
+htmldir
+infodir
+docdir
+oldincludedir
+includedir
+localstatedir
+sharedstatedir
+sysconfdir
+datadir
+datarootdir
+libexecdir
+sbindir
+bindir
+program_transform_name
+prefix
+exec_prefix
+PACKAGE_URL
+PACKAGE_BUGREPORT
+PACKAGE_STRING
+PACKAGE_VERSION
+PACKAGE_TARNAME
+PACKAGE_NAME
+PATH_SEPARATOR
+SHELL
+am__quote'
+ac_subst_files=''
+ac_user_opts='
+enable_option_checking
+enable_silent_rules
+enable_dependency_tracking
+enable_static
+enable_fnmatch
+enable_glob
+enable_test_workaround
+with_libedit
+enable_lineno
+'
+      ac_precious_vars='build_alias
+host_alias
+target_alias
+CC
+CFLAGS
+LDFLAGS
+LIBS
+CPPFLAGS
+CPP'
+
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+ac_unrecognized_opts=
+ac_unrecognized_sep=
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+# (The list follows the same order as the GNU Coding Standards.)
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datarootdir='${prefix}/share'
+datadir='${datarootdir}'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
+infodir='${datarootdir}/info'
+htmldir='${docdir}'
+dvidir='${docdir}'
+pdfdir='${docdir}'
+psdir='${docdir}'
+libdir='${exec_prefix}/lib'
+localedir='${datarootdir}/locale'
+mandir='${datarootdir}/man'
+
+ac_prev=
+ac_dashdash=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval $ac_prev=\$ac_option
+    ac_prev=
+    continue
+  fi
+
+  case $ac_option in
+  *=?*) ac_optarg=`expr "X$ac_option" : '[^=]*=\(.*\)'` ;;
+  *=)   ac_optarg= ;;
+  *)    ac_optarg=yes ;;
+  esac
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_dashdash$ac_option in
+  --)
+    ac_dashdash=yes ;;
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=*)
+    datadir=$ac_optarg ;;
+
+  -datarootdir | --datarootdir | --datarootdi | --datarootd | --dataroot \
+  | --dataroo | --dataro | --datar)
+    ac_prev=datarootdir ;;
+  -datarootdir=* | --datarootdir=* | --datarootdi=* | --datarootd=* \
+  | --dataroot=* | --dataroo=* | --dataro=* | --datar=*)
+    datarootdir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--disable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=no ;;
+
+  -docdir | --docdir | --docdi | --doc | --do)
+    ac_prev=docdir ;;
+  -docdir=* | --docdir=* | --docdi=* | --doc=* | --do=*)
+    docdir=$ac_optarg ;;
+
+  -dvidir | --dvidir | --dvidi | --dvid | --dvi | --dv)
+    ac_prev=dvidir ;;
+  -dvidir=* | --dvidir=* | --dvidi=* | --dvid=* | --dvi=* | --dv=*)
+    dvidir=$ac_optarg ;;
+
+  -enable-* | --enable-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid feature name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"enable_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--enable-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval enable_$ac_useropt=\$ac_optarg ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -htmldir | --htmldir | --htmldi | --htmld | --html | --htm | --ht)
+    ac_prev=htmldir ;;
+  -htmldir=* | --htmldir=* | --htmldi=* | --htmld=* | --html=* | --htm=* \
+  | --ht=*)
+    htmldir=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localedir | --localedir | --localedi | --localed | --locale)
+    ac_prev=localedir ;;
+  -localedir=* | --localedir=* | --localedi=* | --localed=* | --locale=*)
+    localedir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst | --locals)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* | --locals=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -pdfdir | --pdfdir | --pdfdi | --pdfd | --pdf | --pd)
+    ac_prev=pdfdir ;;
+  -pdfdir=* | --pdfdir=* | --pdfdi=* | --pdfd=* | --pdf=* | --pd=*)
+    pdfdir=$ac_optarg ;;
+
+  -psdir | --psdir | --psdi | --psd | --ps)
+    ac_prev=psdir ;;
+  -psdir=* | --psdir=* | --psdi=* | --psd=* | --ps=*)
+    psdir=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--with-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=\$ac_optarg ;;
+
+  -without-* | --without-*)
+    ac_useropt=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_useropt" : ".*[^-+._$as_cr_alnum]" >/dev/null &&
+      as_fn_error $? "invalid package name: $ac_useropt"
+    ac_useropt_orig=$ac_useropt
+    ac_useropt=`$as_echo "$ac_useropt" | sed 's/[-+.]/_/g'`
+    case $ac_user_opts in
+      *"
+"with_$ac_useropt"
+"*) ;;
+      *) ac_unrecognized_opts="$ac_unrecognized_opts$ac_unrecognized_sep--without-$ac_useropt_orig"
+	 ac_unrecognized_sep=', ';;
+    esac
+    eval with_$ac_useropt=no ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) as_fn_error $? "unrecognized option: \`$ac_option'
+Try \`$0 --help' for more information"
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    case $ac_envvar in #(
+      '' | [0-9]* | *[!_$as_cr_alnum]* )
+      as_fn_error $? "invalid variable name: \`$ac_envvar'" ;;
+    esac
+    eval $ac_envvar=\$ac_optarg
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    $as_echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      $as_echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : "${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}"
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  as_fn_error $? "missing argument to $ac_option"
+fi
+
+if test -n "$ac_unrecognized_opts"; then
+  case $enable_option_checking in
+    no) ;;
+    fatal) as_fn_error $? "unrecognized options: $ac_unrecognized_opts" ;;
+    *)     $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2 ;;
+  esac
+fi
+
+# Check all directory arguments for consistency.
+for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
+		datadir sysconfdir sharedstatedir localstatedir includedir \
+		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
+		libdir localedir mandir
+do
+  eval ac_val=\$$ac_var
+  # Remove trailing slashes.
+  case $ac_val in
+    */ )
+      ac_val=`expr "X$ac_val" : 'X\(.*[^/]\)' \| "X$ac_val" : 'X\(.*\)'`
+      eval $ac_var=\$ac_val;;
+  esac
+  # Be sure to have absolute directory names.
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* )  continue;;
+    NONE | '' ) case $ac_var in *prefix ) continue;; esac;;
+  esac
+  as_fn_error $? "expected an absolute directory name for --$ac_var: $ac_val"
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+ac_pwd=`pwd` && test -n "$ac_pwd" &&
+ac_ls_di=`ls -di .` &&
+ac_pwd_ls_di=`cd "$ac_pwd" && ls -di .` ||
+  as_fn_error $? "working directory cannot be determined"
+test "X$ac_ls_di" = "X$ac_pwd_ls_di" ||
+  as_fn_error $? "pwd does not report name of working directory"
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then the parent directory.
+  ac_confdir=`$as_dirname -- "$as_myself" ||
+$as_expr X"$as_myself" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_myself" : 'X\(//\)[^/]' \| \
+	 X"$as_myself" : 'X\(//\)$' \| \
+	 X"$as_myself" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_myself" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r "$srcdir/$ac_unique_file"; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r "$srcdir/$ac_unique_file"; then
+  test "$ac_srcdir_defaulted" = yes && srcdir="$ac_confdir or .."
+  as_fn_error $? "cannot find sources ($ac_unique_file) in $srcdir"
+fi
+ac_msg="sources are in $srcdir, but \`cd $srcdir' does not work"
+ac_abs_confdir=`(
+	cd "$srcdir" && test -r "./$ac_unique_file" || as_fn_error $? "$ac_msg"
+	pwd)`
+# When building in place, set srcdir=.
+if test "$ac_abs_confdir" = "$ac_pwd"; then
+  srcdir=.
+fi
+# Remove unnecessary trailing slashes from srcdir.
+# Double slashes in file names in object file debugging info
+# mess up M-x gdb in Emacs.
+case $srcdir in
+*/) srcdir=`expr "X$srcdir" : 'X\(.*[^/]\)' \| "X$srcdir" : 'X\(.*\)'`;;
+esac
+for ac_var in $ac_precious_vars; do
+  eval ac_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_env_${ac_var}_value=\$${ac_var}
+  eval ac_cv_env_${ac_var}_set=\${${ac_var}+set}
+  eval ac_cv_env_${ac_var}_value=\$${ac_var}
+done
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures dash 0.5.11.2 to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking ...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+                          [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+                          [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --oldincludedir=DIR     C header files for non-gcc [/usr/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+  --docdir=DIR            documentation root [DATAROOTDIR/doc/dash]
+  --htmldir=DIR           html documentation [DOCDIR]
+  --dvidir=DIR            dvi documentation [DOCDIR]
+  --pdfdir=DIR            pdf documentation [DOCDIR]
+  --psdir=DIR             ps documentation [DOCDIR]
+_ACEOF
+
+  cat <<\_ACEOF
+
+Program names:
+  --program-prefix=PREFIX            prepend PREFIX to installed program names
+  --program-suffix=SUFFIX            append SUFFIX to installed program names
+  --program-transform-name=PROGRAM   run sed PROGRAM on installed program names
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+  case $ac_init_help in
+     short | recursive ) echo "Configuration of dash 0.5.11.2:";;
+   esac
+  cat <<\_ACEOF
+
+Optional Features:
+  --disable-option-checking  ignore unrecognized --enable/--with options
+  --disable-FEATURE       do not include FEATURE (same as --enable-FEATURE=no)
+  --enable-FEATURE[=ARG]  include FEATURE [ARG=yes]
+  --enable-silent-rules   less verbose build output (undo: "make V=1")
+  --disable-silent-rules  verbose build output (undo: "make V=0")
+  --enable-dependency-tracking
+                          do not reject slow dependency extractors
+  --disable-dependency-tracking
+                          speeds up one-time build
+  --enable-static         Build statical linked program
+  --enable-fnmatch        Use fnmatch(3) from libc
+  --enable-glob           Use glob(3) from libc
+  --enable-test-workaround
+                          Guard against faccessat(2) that tells root all files
+                          are executable
+  --disable-lineno        Disable LINENO support
+
+Optional Packages:
+  --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
+  --without-PACKAGE       do not use PACKAGE (same as --with-PACKAGE=no)
+  --without-libedit       Compile without libedit support
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  LIBS        libraries to pass to the linker, e.g. -l<library>
+  CPPFLAGS    (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
+              you have headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+Report bugs to the package provider.
+_ACEOF
+ac_status=$?
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d "$ac_dir" ||
+      { cd "$srcdir" && ac_pwd=`pwd` && srcdir=. && test -d "$ac_dir"; } ||
+      continue
+    ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+    cd "$ac_dir" || { ac_status=$?; continue; }
+    # Check for guested configure.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure.gnu" --help=recursive
+    elif test -f "$ac_srcdir/configure"; then
+      echo &&
+      $SHELL "$ac_srcdir/configure" --help=recursive
+    else
+      $as_echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi || ac_status=$?
+    cd "$ac_pwd" || { ac_status=$?; break; }
+  done
+fi
+
+test -n "$ac_init_help" && exit $ac_status
+if $ac_init_version; then
+  cat <<\_ACEOF
+dash configure 0.5.11.2
+generated by GNU Autoconf 2.69
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit
+fi
+
+## ------------------------ ##
+## Autoconf initialization. ##
+## ------------------------ ##
+
+# ac_fn_c_try_compile LINENO
+# --------------------------
+# Try to compile conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext
+  if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_compile
+
+# ac_fn_c_try_cpp LINENO
+# ----------------------
+# Try to preprocess conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_cpp ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } > conftest.i && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+    ac_retval=1
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_cpp
+
+# ac_fn_c_check_header_mongrel LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists, giving a warning if it cannot be compiled using
+# the include files in INCLUDES and setting the cache variable VAR
+# accordingly.
+ac_fn_c_check_header_mongrel ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if eval \${$3+:} false; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+else
+  # Is the header compilable?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 usability" >&5
+$as_echo_n "checking $2 usability... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_header_compiler=yes
+else
+  ac_header_compiler=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_compiler" >&5
+$as_echo "$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking $2 presence" >&5
+$as_echo_n "checking $2 presence... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <$2>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  ac_header_preproc=yes
+else
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_header_preproc" >&5
+$as_echo "$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in #((
+  yes:no: )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&5
+$as_echo "$as_me: WARNING: $2: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+  no:yes:* )
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: present but cannot be compiled" >&5
+$as_echo "$as_me: WARNING: $2: present but cannot be compiled" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     check for missing prerequisite headers?" >&5
+$as_echo "$as_me: WARNING: $2:     check for missing prerequisite headers?" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: see the Autoconf documentation" >&5
+$as_echo "$as_me: WARNING: $2: see the Autoconf documentation" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&5
+$as_echo "$as_me: WARNING: $2:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $2: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $2: proceeding with the compiler's result" >&2;}
+    ;;
+esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  eval "$3=\$ac_header_compiler"
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_mongrel
+
+# ac_fn_c_try_run LINENO
+# ----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded. Assumes
+# that executables *can* be run.
+ac_fn_c_try_run ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && { ac_try='./conftest$ac_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: program exited with status $ac_status" >&5
+       $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+       ac_retval=$ac_status
+fi
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_run
+
+# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
+# -------------------------------------------------------
+# Tests whether HEADER exists and can be compiled using the include files in
+# INCLUDES, setting the cache variable VAR accordingly.
+ac_fn_c_check_header_compile ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+#include <$2>
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_header_compile
+
+# ac_fn_c_try_link LINENO
+# -----------------------
+# Try to link conftest.$ac_ext, and return whether this succeeded.
+ac_fn_c_try_link ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  rm -f conftest.$ac_objext conftest$ac_exeext
+  if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    grep -v '^ *+' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+    mv -f conftest.er1 conftest.err
+  fi
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext && {
+	 test "$cross_compiling" = yes ||
+	 test -x conftest$ac_exeext
+       }; then :
+  ac_retval=0
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_retval=1
+fi
+  # Delete the IPA/IPO (Inter Procedural Analysis/Optimization) information
+  # created by the PGI compiler (conftest_ipa8_conftest.oo), as it would
+  # interfere with the next link command; also delete a directory that is
+  # left behind by Apple's compiler.  We do this before executing the actions.
+  rm -rf conftest.dSYM conftest_ipa8_conftest.oo
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_try_link
+
+# ac_fn_c_check_decl LINENO SYMBOL VAR INCLUDES
+# ---------------------------------------------
+# Tests whether SYMBOL is declared in INCLUDES, setting cache variable VAR
+# accordingly.
+ac_fn_c_check_decl ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  as_decl_name=`echo $2|sed 's/ *(.*//'`
+  as_decl_use=`echo $2|sed -e 's/(/((/' -e 's/)/) 0&/' -e 's/,/) 0& (/g'`
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $as_decl_name is declared" >&5
+$as_echo_n "checking whether $as_decl_name is declared... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main ()
+{
+#ifndef $as_decl_name
+#ifdef __cplusplus
+  (void) $as_decl_use;
+#else
+  (void) $as_decl_name;
+#endif
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_decl
+
+# ac_fn_c_compute_int LINENO EXPR VAR INCLUDES
+# --------------------------------------------
+# Tries to find the compile-time value of EXPR in a program that includes
+# INCLUDES, setting VAR accordingly. Returns whether the value could be
+# computed
+ac_fn_c_compute_int ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  if test "$cross_compiling" = yes; then
+    # Depending upon the size, compute the lo and hi bounds.
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) >= 0)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_lo=0 ac_mid=0
+  while :; do
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) <= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_hi=$ac_mid; break
+else
+  as_fn_arith $ac_mid + 1 && ac_lo=$as_val
+			if test $ac_lo -le $ac_mid; then
+			  ac_lo= ac_hi=
+			  break
+			fi
+			as_fn_arith 2 '*' $ac_mid + 1 && ac_mid=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  done
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) < 0)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_hi=-1 ac_mid=-1
+  while :; do
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) >= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_lo=$ac_mid; break
+else
+  as_fn_arith '(' $ac_mid ')' - 1 && ac_hi=$as_val
+			if test $ac_mid -le $ac_hi; then
+			  ac_lo= ac_hi=
+			  break
+			fi
+			as_fn_arith 2 '*' $ac_mid && ac_mid=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+  done
+else
+  ac_lo= ac_hi=
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+# Binary search between lo and hi bounds.
+while test "x$ac_lo" != "x$ac_hi"; do
+  as_fn_arith '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo && ac_mid=$as_val
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+int
+main ()
+{
+static int test_array [1 - 2 * !(($2) <= $ac_mid)];
+test_array [0] = 0;
+return test_array [0];
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_hi=$ac_mid
+else
+  as_fn_arith '(' $ac_mid ')' + 1 && ac_lo=$as_val
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+case $ac_lo in #((
+?*) eval "$3=\$ac_lo"; ac_retval=0 ;;
+'') ac_retval=1 ;;
+esac
+  else
+    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+$4
+static long int longval () { return $2; }
+static unsigned long int ulongval () { return $2; }
+#include <stdio.h>
+#include <stdlib.h>
+int
+main ()
+{
+
+  FILE *f = fopen ("conftest.val", "w");
+  if (! f)
+    return 1;
+  if (($2) < 0)
+    {
+      long int i = longval ();
+      if (i != ($2))
+	return 1;
+      fprintf (f, "%ld", i);
+    }
+  else
+    {
+      unsigned long int i = ulongval ();
+      if (i != ($2))
+	return 1;
+      fprintf (f, "%lu", i);
+    }
+  /* Do not output a trailing newline, as this causes \r\n confusion
+     on some platforms.  */
+  return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+  echo >>conftest.val; read $3 <conftest.val; ac_retval=0
+else
+  ac_retval=1
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+rm -f conftest.val
+
+  fi
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+  as_fn_set_status $ac_retval
+
+} # ac_fn_c_compute_int
+
+# ac_fn_c_check_func LINENO FUNC VAR
+# ----------------------------------
+# Tests whether FUNC exists, setting the cache variable VAR accordingly
+ac_fn_c_check_func ()
+{
+  as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
+$as_echo_n "checking for $2... " >&6; }
+if eval \${$3+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+/* Define $2 to an innocuous variant, in case <limits.h> declares $2.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $2 innocuous_$2
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $2 (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $2
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char $2 ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined __stub_$2 || defined __stub___$2
+choke me
+#endif
+
+int
+main ()
+{
+return $2 ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$3=yes"
+else
+  eval "$3=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+fi
+eval ac_res=\$$3
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
+
+} # ac_fn_c_check_func
+cat >config.log <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by dash $as_me 0.5.11.2, which was
+generated by GNU Autoconf 2.69.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+exec 5>>config.log
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    $as_echo "PATH: $as_dir"
+  done
+IFS=$as_save_IFS
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *\'*)
+      ac_arg=`$as_echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;
+    2)
+      as_fn_append ac_configure_args1 " '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      as_fn_append ac_configure_args " '$ac_arg'"
+      ;;
+    esac
+  done
+done
+{ ac_configure_args0=; unset ac_configure_args0;}
+{ ac_configure_args1=; unset ac_configure_args1;}
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Use '\'' to represent an apostrophe within the trap.
+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    $as_echo "## ---------------- ##
+## Cache variables. ##
+## ---------------- ##"
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+(
+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+  (set) 2>&1 |
+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      sed -n \
+	"s/'\''/'\''\\\\'\'''\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"
+      ;; #(
+    *)
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+)
+    echo
+
+    $as_echo "## ----------------- ##
+## Output variables. ##
+## ----------------- ##"
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=\$$ac_var
+      case $ac_val in
+      *\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+      esac
+      $as_echo "$ac_var='\''$ac_val'\''"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      $as_echo "## ------------------- ##
+## File substitutions. ##
+## ------------------- ##"
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=\$$ac_var
+	case $ac_val in
+	*\'\''*) ac_val=`$as_echo "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;
+	esac
+	$as_echo "$ac_var='\''$ac_val'\''"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      $as_echo "## ----------- ##
+## confdefs.h. ##
+## ----------- ##"
+      echo
+      cat confdefs.h
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      $as_echo "$as_me: caught signal $ac_signal"
+    $as_echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core core.conftest.* &&
+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -f -r conftest* confdefs.h
+
+$as_echo "/* confdefs.h */" > confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_URL "$PACKAGE_URL"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer an explicitly selected file to automatically selected ones.
+ac_site_file1=NONE
+ac_site_file2=NONE
+if test -n "$CONFIG_SITE"; then
+  # We do not want a PATH search for config.site.
+  case $CONFIG_SITE in #((
+    -*)  ac_site_file1=./$CONFIG_SITE;;
+    */*) ac_site_file1=$CONFIG_SITE;;
+    *)   ac_site_file1=./$CONFIG_SITE;;
+  esac
+elif test "x$prefix" != xNONE; then
+  ac_site_file1=$prefix/share/config.site
+  ac_site_file2=$prefix/etc/config.site
+else
+  ac_site_file1=$ac_default_prefix/share/config.site
+  ac_site_file2=$ac_default_prefix/etc/config.site
+fi
+for ac_site_file in "$ac_site_file1" "$ac_site_file2"
+do
+  test "x$ac_site_file" = xNONE && continue
+  if test /dev/null != "$ac_site_file" && test -r "$ac_site_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5
+$as_echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file" \
+      || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "failed to load site script $ac_site_file
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special files
+  # actually), so we avoid doing that.  DJGPP emulates it as a regular file.
+  if test /dev/null != "$cache_file" && test -f "$cache_file"; then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5
+$as_echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . "$cache_file";;
+      *)                      . "./$cache_file";;
+    esac
+  fi
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5
+$as_echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in $ac_precious_vars; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val=\$ac_cv_env_${ac_var}_value
+  eval ac_new_val=\$ac_env_${ac_var}_value
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5
+$as_echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	# differences in whitespace do not lead to failure.
+	ac_old_val_w=`echo x $ac_old_val`
+	ac_new_val_w=`echo x $ac_new_val`
+	if test "$ac_old_val_w" != "$ac_new_val_w"; then
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5
+$as_echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	  ac_cache_corrupted=:
+	else
+	  { $as_echo "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5
+$as_echo "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}
+	  eval $ac_var=\$ac_old_val
+	fi
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5
+$as_echo "$as_me:   former value:  \`$ac_old_val'" >&2;}
+	{ $as_echo "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5
+$as_echo "$as_me:   current value: \`$ac_new_val'" >&2;}
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *\'*) ac_arg=$ac_var=`$as_echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+  { $as_echo "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5
+$as_echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  as_fn_error $? "run \`make distclean' and/or \`rm $cache_file' and start over" "$LINENO" 5
+fi
+## -------------------- ##
+## Main body of script. ##
+## -------------------- ##
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+am__api_version='1.16'
+
+ac_aux_dir=
+for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
+  if test -f "$ac_dir/install-sh"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install-sh -c"
+    break
+  elif test -f "$ac_dir/install.sh"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/install.sh -c"
+    break
+  elif test -f "$ac_dir/shtool"; then
+    ac_aux_dir=$ac_dir
+    ac_install_sh="$ac_aux_dir/shtool install -c"
+    break
+  fi
+done
+if test -z "$ac_aux_dir"; then
+  as_fn_error $? "cannot find install-sh, install.sh, or shtool in \"$srcdir\" \"$srcdir/..\" \"$srcdir/../..\"" "$LINENO" 5
+fi
+
+# These three variables are undocumented and unsupported,
+# and are intended to be withdrawn in a future Autoconf release.
+# They can cause serious problems if a builder's source tree is in a directory
+# whose full name contains unusual characters.
+ac_config_guess="$SHELL $ac_aux_dir/config.guess"  # Please don't use this var.
+ac_config_sub="$SHELL $ac_aux_dir/config.sub"  # Please don't use this var.
+ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
+
+
+# Find a good install program.  We prefer a C program (faster),
+# so one script is as good as another.  But avoid the broken or
+# incompatible versions:
+# SysV /etc/install, /usr/sbin/install
+# SunOS /usr/etc/install
+# IRIX /sbin/install
+# AIX /bin/install
+# AmigaOS /C/install, which installs bootblocks on floppy discs
+# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
+# AFS /usr/afsws/bin/install, which mishandles nonexistent args
+# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
+# OS/2's system install, which has a completely different semantic
+# ./install, which can be erroneously created by make from ./install.sh.
+# Reject install programs that cannot install multiple files.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a BSD-compatible install" >&5
+$as_echo_n "checking for a BSD-compatible install... " >&6; }
+if test -z "$INSTALL"; then
+if ${ac_cv_path_install+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    # Account for people who put trailing slashes in PATH elements.
+case $as_dir/ in #((
+  ./ | .// | /[cC]/* | \
+  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
+  ?:[\\/]os2[\\/]install[\\/]* | ?:[\\/]OS2[\\/]INSTALL[\\/]* | \
+  /usr/ucb/* ) ;;
+  *)
+    # OSF1 and SCO ODT 3.0 have their own names for install.
+    # Don't use installbsd from OSF since it installs stuff as root
+    # by default.
+    for ac_prog in ginstall scoinst install; do
+      for ac_exec_ext in '' $ac_executable_extensions; do
+	if as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext"; then
+	  if test $ac_prog = install &&
+	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # AIX install.  It has an incompatible calling convention.
+	    :
+	  elif test $ac_prog = install &&
+	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
+	    # program-specific install script used by HP pwplus--don't use.
+	    :
+	  else
+	    rm -rf conftest.one conftest.two conftest.dir
+	    echo one > conftest.one
+	    echo two > conftest.two
+	    mkdir conftest.dir
+	    if "$as_dir/$ac_prog$ac_exec_ext" -c conftest.one conftest.two "`pwd`/conftest.dir" &&
+	      test -s conftest.one && test -s conftest.two &&
+	      test -s conftest.dir/conftest.one &&
+	      test -s conftest.dir/conftest.two
+	    then
+	      ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
+	      break 3
+	    fi
+	  fi
+	fi
+      done
+    done
+    ;;
+esac
+
+  done
+IFS=$as_save_IFS
+
+rm -rf conftest.one conftest.two conftest.dir
+
+fi
+  if test "${ac_cv_path_install+set}" = set; then
+    INSTALL=$ac_cv_path_install
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for INSTALL within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    INSTALL=$ac_install_sh
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $INSTALL" >&5
+$as_echo "$INSTALL" >&6; }
+
+# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
+# It thinks the first close brace ends the variable substitution.
+test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
+
+test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
+
+test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether build environment is sane" >&5
+$as_echo_n "checking whether build environment is sane... " >&6; }
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[\\\"\#\$\&\'\`$am_lf]*)
+    as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5;;
+esac
+case $srcdir in
+  *[\\\"\#\$\&\'\`$am_lf\ \	]*)
+    as_fn_error $? "unsafe srcdir value: '$srcdir'" "$LINENO" 5;;
+esac
+
+# Do 'set' in a subshell so we don't clobber the current shell's
+# arguments.  Must try -L first in case configure is actually a
+# symlink; some systems play weird games with the mod time of symlinks
+# (eg FreeBSD returns the mod time of the symlink's containing
+# directory).
+if (
+   am_has_slept=no
+   for am_try in 1 2; do
+     echo "timestamp, slept: $am_has_slept" > conftest.file
+     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+     if test "$*" = "X"; then
+	# -L didn't work.
+	set X `ls -t "$srcdir/configure" conftest.file`
+     fi
+     if test "$*" != "X $srcdir/configure conftest.file" \
+	&& test "$*" != "X conftest.file $srcdir/configure"; then
+
+	# If neither matched, then we have a broken ls.  This can happen
+	# if, for instance, CONFIG_SHELL is bash and it inherits a
+	# broken ls alias from the environment.  This has actually
+	# happened.  Such a system could not be considered "sane".
+	as_fn_error $? "ls -t appears to fail.  Make sure there is not a broken
+  alias in your environment" "$LINENO" 5
+     fi
+     if test "$2" = conftest.file || test $am_try -eq 2; then
+       break
+     fi
+     # Just in case.
+     sleep 1
+     am_has_slept=yes
+   done
+   test "$2" = conftest.file
+   )
+then
+   # Ok.
+   :
+else
+   as_fn_error $? "newly created file is older than distributed files!
+Check your system clock" "$LINENO" 5
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+# If we didn't sleep, we still need to ensure time stamps of config.status and
+# generated files are strictly newer.
+am_sleep_pid=
+if grep 'slept: no' conftest.file >/dev/null 2>&1; then
+  ( sleep 1 ) &
+  am_sleep_pid=$!
+fi
+
+rm -f conftest.file
+
+test "$program_prefix" != NONE &&
+  program_transform_name="s&^&$program_prefix&;$program_transform_name"
+# Use a double $ so make ignores it.
+test "$program_suffix" != NONE &&
+  program_transform_name="s&\$&$program_suffix&;$program_transform_name"
+# Double any \ or $.
+# By default was `s,x,x', remove it if useless.
+ac_script='s/[\\$]/&&/g;s/;s,x,x,$//'
+program_transform_name=`$as_echo "$program_transform_name" | sed "$ac_script"`
+
+# Expand $ac_aux_dir to an absolute path.
+am_aux_dir=`cd "$ac_aux_dir" && pwd`
+
+if test x"${MISSING+set}" != xset; then
+  MISSING="\${SHELL} '$am_aux_dir/missing'"
+fi
+# Use eval to expand $SHELL
+if eval "$MISSING --is-lightweight"; then
+  am_missing_run="$MISSING "
+else
+  am_missing_run=
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: 'missing' script is too old or missing" >&5
+$as_echo "$as_me: WARNING: 'missing' script is too old or missing" >&2;}
+fi
+
+if test x"${install_sh+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
+
+# Installed binaries are usually stripped using 'strip' when the user
+# run "make install-strip".  However 'strip' might not be the right
+# tool to use in cross-compilation environments, therefore Automake
+# will honor the 'STRIP' environment variable to overrule this program.
+if test "$cross_compiling" != no; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
+set dummy ${ac_tool_prefix}strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$STRIP"; then
+  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_STRIP="${ac_tool_prefix}strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+STRIP=$ac_cv_prog_STRIP
+if test -n "$STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
+$as_echo "$STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_STRIP"; then
+  ac_ct_STRIP=$STRIP
+  # Extract the first word of "strip", so it can be a program name with args.
+set dummy strip; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_STRIP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_STRIP"; then
+  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_STRIP="strip"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
+if test -n "$ac_ct_STRIP"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
+$as_echo "$ac_ct_STRIP" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_STRIP" = x; then
+    STRIP=":"
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    STRIP=$ac_ct_STRIP
+  fi
+else
+  STRIP="$ac_cv_prog_STRIP"
+fi
+
+fi
+INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
+$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
+if test -z "$MKDIR_P"; then
+  if ${ac_cv_path_mkdir+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in mkdir gmkdir; do
+	 for ac_exec_ext in '' $ac_executable_extensions; do
+	   as_fn_executable_p "$as_dir/$ac_prog$ac_exec_ext" || continue
+	   case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
+	     'mkdir (GNU coreutils) '* | \
+	     'mkdir (coreutils) '* | \
+	     'mkdir (fileutils) '4.1*)
+	       ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext
+	       break 3;;
+	   esac
+	 done
+       done
+  done
+IFS=$as_save_IFS
+
+fi
+
+  test -d ./--version && rmdir ./--version
+  if test "${ac_cv_path_mkdir+set}" = set; then
+    MKDIR_P="$ac_cv_path_mkdir -p"
+  else
+    # As a last resort, use the slow shell script.  Don't cache a
+    # value for MKDIR_P within a source directory, because that will
+    # break other packages using the cache if that directory is
+    # removed, or if the value is a relative name.
+    MKDIR_P="$ac_install_sh -d"
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $MKDIR_P" >&5
+$as_echo "$MKDIR_P" >&6; }
+
+for ac_prog in gawk mawk nawk awk
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_AWK+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$AWK"; then
+  ac_cv_prog_AWK="$AWK" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_AWK="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+AWK=$ac_cv_prog_AWK
+if test -n "$AWK"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
+$as_echo "$AWK" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$AWK" && break
+done
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
+$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
+set x ${MAKE-make}
+ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
+if eval \${ac_cv_prog_make_${ac_make}_set+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat >conftest.make <<\_ACEOF
+SHELL = /bin/sh
+all:
+	@echo '@@@%%%=$(MAKE)=@@@%%%'
+_ACEOF
+# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
+case `${MAKE-make} -f conftest.make 2>/dev/null` in
+  *@@@%%%=?*=@@@%%%*)
+    eval ac_cv_prog_make_${ac_make}_set=yes;;
+  *)
+    eval ac_cv_prog_make_${ac_make}_set=no;;
+esac
+rm -f conftest.make
+fi
+if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+  SET_MAKE=
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+  SET_MAKE="MAKE=${MAKE-make}"
+fi
+
+rm -rf .tst 2>/dev/null
+mkdir .tst 2>/dev/null
+if test -d .tst; then
+  am__leading_dot=.
+else
+  am__leading_dot=_
+fi
+rmdir .tst 2>/dev/null
+
+# Check whether --enable-silent-rules was given.
+if test "${enable_silent_rules+set}" = set; then :
+  enableval=$enable_silent_rules;
+fi
+
+case $enable_silent_rules in # (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=1;;
+esac
+am_make=${MAKE-make}
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $am_make supports nested variables" >&5
+$as_echo_n "checking whether $am_make supports nested variables... " >&6; }
+if ${am_cv_make_support_nested_variables+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if $as_echo 'TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit' | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_make_support_nested_variables" >&5
+$as_echo "$am_cv_make_support_nested_variables" >&6; }
+if test $am_cv_make_support_nested_variables = yes; then
+    AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AM_BACKSLASH='\'
+
+if test "`cd $srcdir && pwd`" != "`pwd`"; then
+  # Use -I$(srcdir) only when $(srcdir) != ., so that make's output
+  # is not polluted with repeated "-I."
+  am__isrc=' -I$(srcdir)'
+  # test to see if srcdir already configured
+  if test -f $srcdir/config.status; then
+    as_fn_error $? "source directory already configured; run \"make distclean\" there first" "$LINENO" 5
+  fi
+fi
+
+# test whether we have cygpath
+if test -z "$CYGPATH_W"; then
+  if (cygpath --version) >/dev/null 2>/dev/null; then
+    CYGPATH_W='cygpath -w'
+  else
+    CYGPATH_W=echo
+  fi
+fi
+
+
+# Define the identity of the package.
+ PACKAGE='dash'
+ VERSION='0.5.11.2'
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE "$PACKAGE"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define VERSION "$VERSION"
+_ACEOF
+
+# Some tools Automake needs.
+
+ACLOCAL=${ACLOCAL-"${am_missing_run}aclocal-${am__api_version}"}
+
+
+AUTOCONF=${AUTOCONF-"${am_missing_run}autoconf"}
+
+
+AUTOMAKE=${AUTOMAKE-"${am_missing_run}automake-${am__api_version}"}
+
+
+AUTOHEADER=${AUTOHEADER-"${am_missing_run}autoheader"}
+
+
+MAKEINFO=${MAKEINFO-"${am_missing_run}makeinfo"}
+
+# For better backward compatibility.  To be removed once Automake 1.9.x
+# dies out for good.  For more background, see:
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
+# <https://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
+mkdir_p='$(MKDIR_P)'
+
+# We need awk for the "check" target (and possibly the TAP driver).  The
+# system "awk" is bad on some platforms.
+# Always define AMTAR for backward compatibility.  Yes, it's still used
+# in the wild :-(  We should find a proper way to deprecate it ...
+AMTAR='$${TAR-tar}'
+
+
+# We'll loop over all known methods to create a tar archive until one works.
+_am_tools='gnutar  pax cpio none'
+
+am__tar='$${TAR-tar} chof - "$$tardir"' am__untar='$${TAR-tar} xf -'
+
+
+
+
+
+
+# POSIX will say in a future version that running "rm -f" with no argument
+# is OK; and we want to be able to make that assumption in our Makefile
+# recipes.  So use an aggressive probe to check that the usage we want is
+# actually supported "in the wild" to an acceptable degree.
+# See automake bug#10828.
+# To make any issue more visible, cause the running configure to be aborted
+# by default if the 'rm' program in use doesn't match our expectations; the
+# user can still override this though.
+if rm -f && rm -fr && rm -rf; then : OK; else
+  cat >&2 <<'END'
+Oops!
+
+Your 'rm' program seems unable to run without file operands specified
+on the command line, even when the '-f' option is present.  This is contrary
+to the behaviour of most rm programs out there, and not conforming with
+the upcoming POSIX standard: <http://austingroupbugs.net/view.php?id=542>
+
+Please tell bug-automake@gnu.org about your system, including the value
+of your $PATH and any error possibly output before this message.  This
+can help us improve future automake versions.
+
+END
+  if test x"$ACCEPT_INFERIOR_RM_PROGRAM" = x"yes"; then
+    echo 'Configuration will proceed anyway, since you have set the' >&2
+    echo 'ACCEPT_INFERIOR_RM_PROGRAM variable to "yes"' >&2
+    echo >&2
+  else
+    cat >&2 <<'END'
+Aborting the configuration process, to ensure you take notice of the issue.
+
+You can download and install GNU coreutils to get an 'rm' implementation
+that behaves properly: <https://www.gnu.org/software/coreutils/>.
+
+If you want to complete the configuration process using your problematic
+'rm' anyway, export the environment variable ACCEPT_INFERIOR_RM_PROGRAM
+to "yes", and re-run configure.
+
+END
+    as_fn_error $? "Your 'rm' program is bad, sorry." "$LINENO" 5
+  fi
+fi
+
+
+
+ac_config_headers="$ac_config_headers config.h"
+
+
+# Check whether --enable-silent-rules was given.
+if test "${enable_silent_rules+set}" = set; then :
+  enableval=$enable_silent_rules;
+fi
+
+case $enable_silent_rules in # (((
+  yes) AM_DEFAULT_VERBOSITY=0;;
+   no) AM_DEFAULT_VERBOSITY=1;;
+    *) AM_DEFAULT_VERBOSITY=0;;
+esac
+am_make=${MAKE-make}
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $am_make supports nested variables" >&5
+$as_echo_n "checking whether $am_make supports nested variables... " >&6; }
+if ${am_cv_make_support_nested_variables+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if $as_echo 'TRUE=$(BAR$(V))
+BAR0=false
+BAR1=true
+V=1
+am__doit:
+	@$(TRUE)
+.PHONY: am__doit' | $am_make -f - >/dev/null 2>&1; then
+  am_cv_make_support_nested_variables=yes
+else
+  am_cv_make_support_nested_variables=no
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_make_support_nested_variables" >&5
+$as_echo "$am_cv_make_support_nested_variables" >&6; }
+if test $am_cv_make_support_nested_variables = yes; then
+    AM_V='$(V)'
+  AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
+else
+  AM_V=$AM_DEFAULT_VERBOSITY
+  AM_DEFAULT_V=$AM_DEFAULT_VERBOSITY
+fi
+AM_BACKSLASH='\'
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+          if test -n "$ac_tool_prefix"; then
+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  fi
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl.exe
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CC" >&5
+$as_echo "$CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl.exe
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_CC+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5
+$as_echo "$ac_ct_CC" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$ac_ct_CC" && break
+done
+
+  if test "x$ac_ct_CC" = x; then
+    CC=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    CC=$ac_ct_CC
+  fi
+fi
+
+fi
+
+
+test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "no acceptable C compiler found in \$PATH
+See \`config.log' for more details" "$LINENO" 5; }
+
+# Provide some information about the compiler.
+$as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
+set X $ac_compile
+ac_compiler=$2
+for ac_option in --version -v -V -qversion; do
+  { { ac_try="$ac_compiler $ac_option >&5"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err
+  ac_status=$?
+  if test -s conftest.err; then
+    sed '10a\
+... rest of stderr output deleted ...
+         10q' conftest.err >conftest.er1
+    cat conftest.er1 >&5
+  fi
+  rm -f conftest.er1 conftest.err
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+done
+
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5
+$as_echo_n "checking whether the C compiler works... " >&6; }
+ac_link_default=`$as_echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+
+# The possible output files:
+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"
+
+ac_rmfiles=
+for ac_file in $ac_files
+do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;
+  esac
+done
+rm -f $ac_rmfiles
+
+if { { ac_try="$ac_link_default"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link_default") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.
+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'
+# in a Makefile.  We should not override ac_cv_exeext if it was cached,
+# so that the user can short-circuit this test for compilers unknown to
+# Autoconf.
+for ac_file in $ac_files ''
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	if test "${ac_cv_exeext+set}" = set && test "$ac_cv_exeext" != no;
+	then :; else
+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	fi
+	# We set ac_cv_exeext here because the later test for it is not
+	# safe: cross compilers may not add the suffix if given an `-o'
+	# argument, so we may need to know it at that point already.
+	# Even if this section looks crufty: it has the advantage of
+	# actually working.
+	break;;
+    * )
+	break;;
+  esac
+done
+test "$ac_cv_exeext" = no && ac_cv_exeext=
+
+else
+  ac_file=''
+fi
+if test -z "$ac_file"; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+$as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "C compiler cannot create executables
+See \`config.log' for more details" "$LINENO" 5; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5
+$as_echo_n "checking for C compiler default output file name... " >&6; }
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5
+$as_echo "$ac_file" >&6; }
+ac_exeext=$ac_cv_exeext
+
+rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5
+$as_echo_n "checking for suffix of executables... " >&6; }
+if { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest conftest$ac_cv_exeext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
+$as_echo "$ac_cv_exeext" >&6; }
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdio.h>
+int
+main ()
+{
+FILE *f = fopen ("conftest.out", "w");
+ return ferror (f) || fclose (f) != 0;
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files="$ac_clean_files conftest.out"
+# Check that the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5
+$as_echo_n "checking whether we are cross compiling... " >&6; }
+if test "$cross_compiling" != yes; then
+  { { ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_link") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }
+  if { ac_try='./conftest$ac_cv_exeext'
+  { { case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_try") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details" "$LINENO" 5; }
+    fi
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5
+$as_echo "$cross_compiling" >&6; }
+
+rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out
+ac_clean_files=$ac_clean_files_save
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5
+$as_echo_n "checking for suffix of object files... " >&6; }
+if ${ac_cv_objext+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { { ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""
+$as_echo "$ac_try_echo"; } >&5
+  (eval "$ac_compile") 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; then :
+  for ac_file in conftest.o conftest.obj conftest.*; do
+  test -f "$ac_file" || continue;
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "cannot compute suffix of object files: cannot compile
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5
+$as_echo "$ac_cv_objext" >&6; }
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether we are using the GNU C compiler" >&5
+$as_echo_n "checking whether we are using the GNU C compiler... " >&6; }
+if ${ac_cv_c_compiler_gnu+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_compiler_gnu=yes
+else
+  ac_compiler_gnu=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5
+$as_echo "$ac_cv_c_compiler_gnu" >&6; }
+if test $ac_compiler_gnu = yes; then
+  GCC=yes
+else
+  GCC=
+fi
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5
+$as_echo_n "checking whether $CC accepts -g... " >&6; }
+if ${ac_cv_prog_cc_g+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_save_c_werror_flag=$ac_c_werror_flag
+   ac_c_werror_flag=yes
+   ac_cv_prog_cc_g=no
+   CFLAGS="-g"
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+else
+  CFLAGS=""
+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+else
+  ac_c_werror_flag=$ac_save_c_werror_flag
+	 CFLAGS="-g"
+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_g=yes
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+   ac_c_werror_flag=$ac_save_c_werror_flag
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5
+$as_echo "$ac_cv_prog_cc_g" >&6; }
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $CC option to accept ISO C89" >&5
+$as_echo_n "checking for $CC option to accept ISO C89... " >&6; }
+if ${ac_cv_prog_cc_c89+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_cv_prog_cc_c89=no
+ac_save_CC=$CC
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+struct stat;
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters
+   inside strings and character constants.  */
+#define FOO(x) 'x'
+int xlc6_cc_array[FOO(a) == 'x' ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std \
+	-Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_prog_cc_c89=$ac_arg
+fi
+rm -f core conftest.err conftest.$ac_objext
+  test "x$ac_cv_prog_cc_c89" != "xno" && break
+done
+rm -f conftest.$ac_ext
+CC=$ac_save_CC
+
+fi
+# AC_CACHE_VAL
+case "x$ac_cv_prog_cc_c89" in
+  x)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: none needed" >&5
+$as_echo "none needed" >&6; } ;;
+  xno)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5
+$as_echo "unsupported" >&6; } ;;
+  *)
+    CC="$CC $ac_cv_prog_cc_c89"
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5
+$as_echo "$ac_cv_prog_cc_c89" >&6; } ;;
+esac
+if test "x$ac_cv_prog_cc_c89" != xno; then :
+
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CC understands -c and -o together" >&5
+$as_echo_n "checking whether $CC understands -c and -o together... " >&6; }
+if ${am_cv_prog_cc_c_o+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+  # Make sure it works both with $CC and with simple cc.
+  # Following AC_PROG_CC_C_O, we do the test twice because some
+  # compilers refuse to overwrite an existing .o file with -o,
+  # though they will create one.
+  am_cv_prog_cc_c_o=yes
+  for am_i in 1 2; do
+    if { echo "$as_me:$LINENO: $CC -c conftest.$ac_ext -o conftest2.$ac_objext" >&5
+   ($CC -c conftest.$ac_ext -o conftest2.$ac_objext) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } \
+         && test -f conftest2.$ac_objext; then
+      : OK
+    else
+      am_cv_prog_cc_c_o=no
+      break
+    fi
+  done
+  rm -f core conftest*
+  unset am_i
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_prog_cc_c_o" >&5
+$as_echo "$am_cv_prog_cc_c_o" >&6; }
+if test "$am_cv_prog_cc_c_o" != yes; then
+   # Losing compiler, so override with the script.
+   # FIXME: It is wrong to rewrite CC.
+   # But if we don't then we get into trouble of one sort or another.
+   # A longer-term fix would be to have automake use am__CC in this case,
+   # and then we could set am__CC="\$(top_srcdir)/compile \$(CC)"
+   CC="$am_aux_dir/compile $CC"
+fi
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+DEPDIR="${am__leading_dot}deps"
+
+ac_config_commands="$ac_config_commands depfiles"
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} supports the include directive" >&5
+$as_echo_n "checking whether ${MAKE-make} supports the include directive... " >&6; }
+cat > confinc.mk << 'END'
+am__doit:
+	@echo this is the am__doit target >confinc.out
+.PHONY: am__doit
+END
+am__include="#"
+am__quote=
+# BSD make does it like this.
+echo '.include "confinc.mk" # ignored' > confmf.BSD
+# Other make implementations (GNU, Solaris 10, AIX) do it like this.
+echo 'include confinc.mk # ignored' > confmf.GNU
+_am_result=no
+for s in GNU BSD; do
+  { echo "$as_me:$LINENO: ${MAKE-make} -f confmf.$s && cat confinc.out" >&5
+   (${MAKE-make} -f confmf.$s && cat confinc.out) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); }
+  case $?:`cat confinc.out 2>/dev/null` in #(
+  '0:this is the am__doit target') :
+    case $s in #(
+  BSD) :
+    am__include='.include' am__quote='"' ;; #(
+  *) :
+    am__include='include' am__quote='' ;;
+esac ;; #(
+  *) :
+     ;;
+esac
+  if test "$am__include" != "#"; then
+    _am_result="yes ($s style)"
+    break
+  fi
+done
+rm -f confinc.* confmf.*
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${_am_result}" >&5
+$as_echo "${_am_result}" >&6; }
+
+# Check whether --enable-dependency-tracking was given.
+if test "${enable_dependency_tracking+set}" = set; then :
+  enableval=$enable_dependency_tracking;
+fi
+
+if test "x$enable_dependency_tracking" != xno; then
+  am_depcomp="$ac_aux_dir/depcomp"
+  AMDEPBACKSLASH='\'
+  am__nodep='_no'
+fi
+ if test "x$enable_dependency_tracking" != xno; then
+  AMDEP_TRUE=
+  AMDEP_FALSE='#'
+else
+  AMDEP_TRUE='#'
+  AMDEP_FALSE=
+fi
+
+
+
+depcc="$CC"   am_compiler_list=
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking dependency style of $depcc" >&5
+$as_echo_n "checking dependency style of $depcc... " >&6; }
+if ${am_cv_CC_dependencies_compiler_type+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$AMDEP_TRUE" && test -f "$am_depcomp"; then
+  # We make a subdir and do the tests there.  Otherwise we can end up
+  # making bogus files that we don't know about and never remove.  For
+  # instance it was reported that on HP-UX the gcc test will end up
+  # making a dummy file named 'D' -- because '-MD' means "put the output
+  # in D".
+  rm -rf conftest.dir
+  mkdir conftest.dir
+  # Copy depcomp to subdir because otherwise we won't find it if we're
+  # using a relative directory.
+  cp "$am_depcomp" conftest.dir
+  cd conftest.dir
+  # We will build objects and dependencies in a subdirectory because
+  # it helps to detect inapplicable dependency modes.  For instance
+  # both Tru64's cc and ICC support -MD to output dependencies as a
+  # side effect of compilation, but ICC will put the dependencies in
+  # the current directory while Tru64 will put them in the object
+  # directory.
+  mkdir sub
+
+  am_cv_CC_dependencies_compiler_type=none
+  if test "$am_compiler_list" = ""; then
+     am_compiler_list=`sed -n 's/^#*\([a-zA-Z0-9]*\))$/\1/p' < ./depcomp`
+  fi
+  am__universal=false
+  case " $depcc " in #(
+     *\ -arch\ *\ -arch\ *) am__universal=true ;;
+     esac
+
+  for depmode in $am_compiler_list; do
+    # Setup a source with many dependencies, because some compilers
+    # like to wrap large dependency lists on column 80 (with \), and
+    # we should not choose a depcomp mode which is confused by this.
+    #
+    # We need to recreate these files for each test, as the compiler may
+    # overwrite some of them when testing with obscure command lines.
+    # This happens at least with the AIX C compiler.
+    : > sub/conftest.c
+    for i in 1 2 3 4 5 6; do
+      echo '#include "conftst'$i'.h"' >> sub/conftest.c
+      # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
+      # Solaris 10 /bin/sh.
+      echo '/* dummy */' > sub/conftst$i.h
+    done
+    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+
+    # We check with '-c' and '-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle '-M -o', and we need to detect this.  Also, some Intel
+    # versions had trouble with output in subdirs.
+    am__obj=sub/conftest.${OBJEXT-o}
+    am__minus_obj="-o $am__obj"
+    case $depmode in
+    gcc)
+      # This depmode causes a compiler race in universal mode.
+      test "$am__universal" = false || continue
+      ;;
+    nosideeffect)
+      # After this tag, mechanisms are not by side-effect, so they'll
+      # only be used when explicitly requested.
+      if test "x$enable_dependency_tracking" = xyes; then
+	continue
+      else
+	break
+      fi
+      ;;
+    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
+      # This compiler won't grok '-c -o', but also, the minuso test has
+      # not run yet.  These depmodes are late enough in the game, and
+      # so weak that their functioning should not be impacted.
+      am__obj=conftest.${OBJEXT-o}
+      am__minus_obj=
+      ;;
+    none) break ;;
+    esac
+    if depmode=$depmode \
+       source=sub/conftest.c object=$am__obj \
+       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
+       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
+         >/dev/null 2>conftest.err &&
+       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
+       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
+       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
+      # icc doesn't choke on unknown options, it will just issue warnings
+      # or remarks (even with -Werror).  So we grep stderr for any message
+      # that says an option was ignored or not supported.
+      # When given -MP, icc 7.0 and 7.1 complain thusly:
+      #   icc: Command line warning: ignoring option '-M'; no argument required
+      # The diagnosis changed in icc 8.0:
+      #   icc: Command line remark: option '-MP' not supported
+      if (grep 'ignoring option' conftest.err ||
+          grep 'not supported' conftest.err) >/dev/null 2>&1; then :; else
+        am_cv_CC_dependencies_compiler_type=$depmode
+        break
+      fi
+    fi
+  done
+
+  cd ..
+  rm -rf conftest.dir
+else
+  am_cv_CC_dependencies_compiler_type=none
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $am_cv_CC_dependencies_compiler_type" >&5
+$as_echo "$am_cv_CC_dependencies_compiler_type" >&6; }
+CCDEPMODE=depmode=$am_cv_CC_dependencies_compiler_type
+
+ if
+  test "x$enable_dependency_tracking" != xno \
+  && test "$am_cv_CC_dependencies_compiler_type" = gcc3; then
+  am__fastdepCC_TRUE=
+  am__fastdepCC_FALSE='#'
+else
+  am__fastdepCC_TRUE='#'
+  am__fastdepCC_FALSE=
+fi
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
+$as_echo_n "checking how to run the C preprocessor... " >&6; }
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if ${ac_cv_prog_CPP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
+$as_echo "$CPP" >&6; }
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+
+else
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether nonexistent headers
+  # can be detected and how.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if ac_fn_c_try_cpp "$LINENO"; then :
+  # Broken: success on invalid input.
+continue
+else
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.i conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.i conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then :
+
+else
+  { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details" "$LINENO" 5; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for grep that handles long lines and -e" >&5
+$as_echo_n "checking for grep that handles long lines and -e... " >&6; }
+if ${ac_cv_path_GREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -z "$GREP"; then
+  ac_path_GREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in grep ggrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_GREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_GREP" || continue
+# Check for GNU ac_path_GREP and select it if it is found.
+  # Check for GNU $ac_path_GREP
+case `"$ac_path_GREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_GREP="$ac_path_GREP" ac_path_GREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'GREP' >> "conftest.nl"
+    "$ac_path_GREP" -e 'GREP$' -e '-(cannot match)-' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_GREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_GREP="$ac_path_GREP"
+      ac_path_GREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_GREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_GREP"; then
+    as_fn_error $? "no acceptable grep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_GREP=$GREP
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_GREP" >&5
+$as_echo "$ac_cv_path_GREP" >&6; }
+ GREP="$ac_cv_path_GREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for egrep" >&5
+$as_echo_n "checking for egrep... " >&6; }
+if ${ac_cv_path_EGREP+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if echo a | $GREP -E '(a|b)' >/dev/null 2>&1
+   then ac_cv_path_EGREP="$GREP -E"
+   else
+     if test -z "$EGREP"; then
+  ac_path_EGREP_found=false
+  # Loop through the user's path and test for each of PROGNAME-LIST
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH$PATH_SEPARATOR/usr/xpg4/bin
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_prog in egrep; do
+    for ac_exec_ext in '' $ac_executable_extensions; do
+      ac_path_EGREP="$as_dir/$ac_prog$ac_exec_ext"
+      as_fn_executable_p "$ac_path_EGREP" || continue
+# Check for GNU ac_path_EGREP and select it if it is found.
+  # Check for GNU $ac_path_EGREP
+case `"$ac_path_EGREP" --version 2>&1` in
+*GNU*)
+  ac_cv_path_EGREP="$ac_path_EGREP" ac_path_EGREP_found=:;;
+*)
+  ac_count=0
+  $as_echo_n 0123456789 >"conftest.in"
+  while :
+  do
+    cat "conftest.in" "conftest.in" >"conftest.tmp"
+    mv "conftest.tmp" "conftest.in"
+    cp "conftest.in" "conftest.nl"
+    $as_echo 'EGREP' >> "conftest.nl"
+    "$ac_path_EGREP" 'EGREP$' < "conftest.nl" >"conftest.out" 2>/dev/null || break
+    diff "conftest.out" "conftest.nl" >/dev/null 2>&1 || break
+    as_fn_arith $ac_count + 1 && ac_count=$as_val
+    if test $ac_count -gt ${ac_path_EGREP_max-0}; then
+      # Best one so far, save it but keep looking for a better one
+      ac_cv_path_EGREP="$ac_path_EGREP"
+      ac_path_EGREP_max=$ac_count
+    fi
+    # 10*(2^10) chars as input seems more than enough
+    test $ac_count -gt 10 && break
+  done
+  rm -f conftest.in conftest.tmp conftest.nl conftest.out;;
+esac
+
+      $ac_path_EGREP_found && break 3
+    done
+  done
+  done
+IFS=$as_save_IFS
+  if test -z "$ac_cv_path_EGREP"; then
+    as_fn_error $? "no acceptable egrep could be found in $PATH$PATH_SEPARATOR/usr/xpg4/bin" "$LINENO" 5
+  fi
+else
+  ac_cv_path_EGREP=$EGREP
+fi
+
+   fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_path_EGREP" >&5
+$as_echo "$ac_cv_path_EGREP" >&6; }
+ EGREP="$ac_cv_path_EGREP"
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
+$as_echo_n "checking for ANSI C header files... " >&6; }
+if ${ac_cv_header_stdc+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_header_stdc=yes
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then :
+  :
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <ctype.h>
+#include <stdlib.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      return 2;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_run "$LINENO"; then :
+
+else
+  ac_cv_header_stdc=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
+  conftest.$ac_objext conftest.beam conftest.$ac_ext
+fi
+
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
+$as_echo "$ac_cv_header_stdc" >&6; }
+if test $ac_cv_header_stdc = yes; then
+
+$as_echo "#define STDC_HEADERS 1" >>confdefs.h
+
+fi
+
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
+"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+
+  ac_fn_c_check_header_mongrel "$LINENO" "minix/config.h" "ac_cv_header_minix_config_h" "$ac_includes_default"
+if test "x$ac_cv_header_minix_config_h" = xyes; then :
+  MINIX=yes
+else
+  MINIX=
+fi
+
+
+  if test "$MINIX" = yes; then
+
+$as_echo "#define _POSIX_SOURCE 1" >>confdefs.h
+
+
+$as_echo "#define _POSIX_1_SOURCE 2" >>confdefs.h
+
+
+$as_echo "#define _MINIX 1" >>confdefs.h
+
+  fi
+
+
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether it is safe to define __EXTENSIONS__" >&5
+$as_echo_n "checking whether it is safe to define __EXTENSIONS__... " >&6; }
+if ${ac_cv_safe_to_define___extensions__+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#         define __EXTENSIONS__ 1
+          $ac_includes_default
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  ac_cv_safe_to_define___extensions__=yes
+else
+  ac_cv_safe_to_define___extensions__=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_safe_to_define___extensions__" >&5
+$as_echo "$ac_cv_safe_to_define___extensions__" >&6; }
+  test $ac_cv_safe_to_define___extensions__ = yes &&
+    $as_echo "#define __EXTENSIONS__ 1" >>confdefs.h
+
+  $as_echo "#define _ALL_SOURCE 1" >>confdefs.h
+
+  $as_echo "#define _GNU_SOURCE 1" >>confdefs.h
+
+  $as_echo "#define _POSIX_PTHREAD_SEMANTICS 1" >>confdefs.h
+
+  $as_echo "#define _TANDEM_SOURCE 1" >>confdefs.h
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for build system compiler" >&5
+$as_echo_n "checking for build system compiler... " >&6; }
+if test "$cross_compiling" = yes; then
+	CC_FOR_BUILD=${CC_FOR_BUILD-cc}
+else
+	CC_FOR_BUILD=${CC}
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${CC_FOR_BUILD}" >&5
+$as_echo "${CC_FOR_BUILD}" >&6; }
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for __attribute__((__alias__()))" >&5
+$as_echo_n "checking for __attribute__((__alias__()))... " >&6; }
+dash_cv_have_attribute_alias=no
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+void t() {}
+                                 void a() __attribute__((__alias__("t")));
+int
+main ()
+{
+a();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  dash_cv_have_attribute_alias=yes
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dash_cv_have_attribute_alias" >&5
+$as_echo "$dash_cv_have_attribute_alias" >&6; }
+if test "x$dash_cv_have_attribute_alias" = xyes; then
+
+$as_echo "#define HAVE_ALIAS_ATTRIBUTE 1" >>confdefs.h
+
+fi
+
+# Check whether --enable-static was given.
+if test "${enable_static+set}" = set; then :
+  enableval=$enable_static;
+fi
+
+if test "$enable_static" = "yes"; then
+	export LDFLAGS="-static -Wl,--fatal-warnings"
+fi
+
+# Check whether --enable-fnmatch was given.
+if test "${enable_fnmatch+set}" = set; then :
+  enableval=$enable_fnmatch;
+fi
+
+# Check whether --enable-glob was given.
+if test "${enable_glob+set}" = set; then :
+  enableval=$enable_glob;
+fi
+
+
+
+for ac_header in alloca.h paths.h
+do :
+  as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
+if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+ac_fn_c_check_decl "$LINENO" "_PATH_BSHELL" "ac_cv_have_decl__PATH_BSHELL" "
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+
+"
+if test "x$ac_cv_have_decl__PATH_BSHELL" = xyes; then :
+
+else
+
+cat >>confdefs.h <<_ACEOF
+#define _PATH_BSHELL "/bin/sh"
+_ACEOF
+
+fi
+
+ac_fn_c_check_decl "$LINENO" "_PATH_DEVNULL" "ac_cv_have_decl__PATH_DEVNULL" "
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+
+"
+if test "x$ac_cv_have_decl__PATH_DEVNULL" = xyes; then :
+
+else
+
+cat >>confdefs.h <<_ACEOF
+#define _PATH_DEVNULL "/dev/null"
+_ACEOF
+
+fi
+
+ac_fn_c_check_decl "$LINENO" "_PATH_TTY" "ac_cv_have_decl__PATH_TTY" "
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+
+"
+if test "x$ac_cv_have_decl__PATH_TTY" = xyes; then :
+
+else
+
+cat >>confdefs.h <<_ACEOF
+#define _PATH_TTY "/dev/tty"
+_ACEOF
+
+fi
+
+
+ac_fn_c_check_decl "$LINENO" "isblank" "ac_cv_have_decl_isblank" "#include <ctype.h>
+"
+if test "x$ac_cv_have_decl_isblank" = xyes; then :
+  ac_have_decl=1
+else
+  ac_have_decl=0
+fi
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_DECL_ISBLANK $ac_have_decl
+_ACEOF
+
+
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of intmax_t" >&5
+$as_echo_n "checking size of intmax_t... " >&6; }
+if ${ac_cv_sizeof_intmax_t+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (intmax_t))" "ac_cv_sizeof_intmax_t"        "$ac_includes_default"; then :
+
+else
+  if test "$ac_cv_type_intmax_t" = yes; then
+     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (intmax_t)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_intmax_t=0
+   fi
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_intmax_t" >&5
+$as_echo "$ac_cv_sizeof_intmax_t" >&6; }
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define SIZEOF_INTMAX_T $ac_cv_sizeof_intmax_t
+_ACEOF
+
+
+# The cast to long int works around a bug in the HP C Compiler
+# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
+# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
+# This bug is HP SR number 8606223364.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking size of long long int" >&5
+$as_echo_n "checking size of long long int... " >&6; }
+if ${ac_cv_sizeof_long_long_int+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if ac_fn_c_compute_int "$LINENO" "(long int) (sizeof (long long int))" "ac_cv_sizeof_long_long_int"        "$ac_includes_default"; then :
+
+else
+  if test "$ac_cv_type_long_long_int" = yes; then
+     { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error 77 "cannot compute sizeof (long long int)
+See \`config.log' for more details" "$LINENO" 5; }
+   else
+     ac_cv_sizeof_long_long_int=0
+   fi
+fi
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_sizeof_long_long_int" >&5
+$as_echo "$ac_cv_sizeof_long_long_int" >&6; }
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define SIZEOF_LONG_LONG_INT $ac_cv_sizeof_long_long_int
+_ACEOF
+
+
+
+if test "x$ac_cv_sizeof_intmax_t" = "x$ac_cv_sizeof_long_long_int"; then
+  intmax_fstr="lld"
+else
+  intmax_fstr="jd"
+fi
+
+ac_fn_c_check_decl "$LINENO" "PRIdMAX" "ac_cv_have_decl_PRIdMAX" "
+#include <inttypes.h>
+
+"
+if test "x$ac_cv_have_decl_PRIdMAX" = xyes; then :
+
+else
+
+cat >>confdefs.h <<_ACEOF
+#define PRIdMAX "$intmax_fstr"
+_ACEOF
+
+fi
+
+
+for ac_func in bsearch faccessat getpwnam getrlimit isalpha killpg \
+	       mempcpy \
+	       sigsetmask stpcpy strchrnul strsignal strtod strtoimax \
+	       strtoumax sysconf
+do :
+  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
+ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
+if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
+  cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+
+
+# Check whether --enable-test-workaround was given.
+if test "${enable_test_workaround+set}" = set; then :
+  enableval=$enable_test_workaround;
+else
+  enable_test_workaround=auto
+fi
+
+
+if test "enable_test_workaround" = "auto" &&
+   test "$ac_cv_func_faccessat" = yes; then
+	case `uname -s 2>/dev/null` in
+	GNU/kFreeBSD | \
+	FreeBSD)
+		enable_test_workaround=yes
+	esac
+fi
+if test "$enable_test_workaround" = "yes"; then
+
+$as_echo "#define HAVE_TRADITIONAL_FACCESSAT 1" >>confdefs.h
+
+fi
+
+if test "$enable_fnmatch" = yes; then
+	use_fnmatch=
+	for ac_func in fnmatch
+do :
+  ac_fn_c_check_func "$LINENO" "fnmatch" "ac_cv_func_fnmatch"
+if test "x$ac_cv_func_fnmatch" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_FNMATCH 1
+_ACEOF
+ use_fnmatch=yes
+fi
+done
+
+fi
+
+if test "$use_fnmatch" = yes && test "$enable_glob" = yes; then
+	for ac_func in glob
+do :
+  ac_fn_c_check_func "$LINENO" "glob" "ac_cv_func_glob"
+if test "x$ac_cv_func_glob" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_GLOB 1
+_ACEOF
+
+fi
+done
+
+fi
+
+ac_fn_c_check_func "$LINENO" "signal" "ac_cv_func_signal"
+if test "x$ac_cv_func_signal" = xyes; then :
+
+fi
+
+if test "$ac_cv_func_signal" != yes; then
+	ac_fn_c_check_func "$LINENO" "bsd_signal" "ac_cv_func_bsd_signal"
+if test "x$ac_cv_func_bsd_signal" = xyes; then :
+
+$as_echo "#define signal bsd_signal" >>confdefs.h
+
+fi
+
+fi
+
+ac_fn_c_check_func "$LINENO" "stat64" "ac_cv_func_stat64"
+if test "x$ac_cv_func_stat64" = xyes; then :
+
+else
+
+
+$as_echo "#define fstat64 fstat" >>confdefs.h
+
+
+$as_echo "#define lstat64 lstat" >>confdefs.h
+
+
+$as_echo "#define stat64 stat" >>confdefs.h
+
+
+fi
+
+
+ac_fn_c_check_func "$LINENO" "open64" "ac_cv_func_open64"
+if test "x$ac_cv_func_open64" = xyes; then :
+
+else
+
+
+$as_echo "#define open64 open" >>confdefs.h
+
+
+$as_echo "#define readdir64 readdir" >>confdefs.h
+
+
+$as_echo "#define dirent64 dirent" >>confdefs.h
+
+
+fi
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for stat::st_mtim" >&5
+$as_echo_n "checking for stat::st_mtim... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <time.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+int
+main ()
+{
+struct stat foo; return sizeof(foo.st_mtim.tv_sec)
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  have_st_mtim=yes
+else
+  have_st_mtim=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $have_st_mtim" >&5
+$as_echo "$have_st_mtim" >&6; }
+if test "$have_st_mtim" = "yes"; then
+
+$as_echo "#define HAVE_ST_MTIM 1" >>confdefs.h
+
+fi
+
+
+# Check whether --with-libedit was given.
+if test "${with_libedit+set}" = set; then :
+  withval=$with_libedit;
+fi
+
+use_libedit=
+if test "$with_libedit" != "no"; then
+	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for history_init in -ledit" >&5
+$as_echo_n "checking for history_init in -ledit... " >&6; }
+if ${ac_cv_lib_edit_history_init+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ledit  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char history_init ();
+int
+main ()
+{
+return history_init ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_edit_history_init=yes
+else
+  ac_cv_lib_edit_history_init=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_edit_history_init" >&5
+$as_echo "$ac_cv_lib_edit_history_init" >&6; }
+if test "x$ac_cv_lib_edit_history_init" = xyes; then :
+
+		ac_fn_c_check_header_mongrel "$LINENO" "histedit.h" "ac_cv_header_histedit_h" "$ac_includes_default"
+if test "x$ac_cv_header_histedit_h" = xyes; then :
+  use_libedit="yes"
+else
+  as_fn_error $? "Can't find required header files." "$LINENO" 5
+fi
+
+
+else
+
+		as_fn_error $? "Can't find libedit." "$LINENO" 5
+fi
+
+fi
+if test "$use_libedit" != "yes"; then
+
+$as_echo "#define SMALL 1" >>confdefs.h
+
+else
+	export LIBS="$LIBS -ledit"
+	for ac_func in _el_fn_sh_complete
+do :
+  ac_fn_c_check_func "$LINENO" "_el_fn_sh_complete" "ac_cv_func__el_fn_sh_complete"
+if test "x$ac_cv_func__el_fn_sh_complete" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE__EL_FN_SH_COMPLETE 1
+_ACEOF
+
+fi
+done
+
+fi
+# Check whether --enable-lineno was given.
+if test "${enable_lineno+set}" = set; then :
+  enableval=$enable_lineno;
+fi
+
+if test "$enable_lineno" != "no"; then
+
+$as_echo "#define WITH_LINENO 1" >>confdefs.h
+
+fi
+ac_config_files="$ac_config_files Makefile src/Makefile"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, we kill variables containing newlines.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+(
+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do
+    eval ac_val=\$$ac_var
+    case $ac_val in #(
+    *${as_nl}*)
+      case $ac_var in #(
+      *_cv_*) { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5
+$as_echo "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;
+      esac
+      case $ac_var in #(
+      _ | IFS | as_nl) ;; #(
+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(
+      *) { eval $ac_var=; unset $ac_var;} ;;
+      esac ;;
+    esac
+  done
+
+  (set) 2>&1 |
+    case $as_nl`(ac_space=' '; set) 2>&1` in #(
+    *${as_nl}ac_space=\ *)
+      # `set' does not quote correctly, so add quotes: double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \.
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;; #(
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"
+      ;;
+    esac |
+    sort
+) |
+  sed '
+     /^ac_cv_env_/b end
+     t clear
+     :clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     :end' >>confcache
+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else
+  if test -w "$cache_file"; then
+    if test "x$cache_file" != "x/dev/null"; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5
+$as_echo "$as_me: updating cache $cache_file" >&6;}
+      if test ! -f "$cache_file" || test -h "$cache_file"; then
+	cat confcache >"$cache_file"
+      else
+        case $cache_file in #(
+        */* | ?:*)
+	  mv -f confcache "$cache_file"$$ &&
+	  mv -f "$cache_file"$$ "$cache_file" ;; #(
+        *)
+	  mv -f confcache "$cache_file" ;;
+	esac
+      fi
+    fi
+  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5
+$as_echo "$as_me: not updating unwritable cache $cache_file" >&6;}
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+DEFS=-DHAVE_CONFIG_H
+
+ac_libobjs=
+ac_ltlibobjs=
+U=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
+  ac_i=`$as_echo "$ac_i" | sed "$ac_script"`
+  # 2. Prepend LIBOBJDIR.  When used with automake>=1.10 LIBOBJDIR
+  #    will be set to the directory where LIBOBJS objects are built.
+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"
+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking that generated files are newer than configure" >&5
+$as_echo_n "checking that generated files are newer than configure... " >&6; }
+   if test -n "$am_sleep_pid"; then
+     # Hide warnings about reused PIDs.
+     wait $am_sleep_pid 2>/dev/null
+   fi
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: done" >&5
+$as_echo "done" >&6; }
+ if test -n "$EXEEXT"; then
+  am__EXEEXT_TRUE=
+  am__EXEEXT_FALSE='#'
+else
+  am__EXEEXT_TRUE='#'
+  am__EXEEXT_FALSE=
+fi
+
+if test -z "${AMDEP_TRUE}" && test -z "${AMDEP_FALSE}"; then
+  as_fn_error $? "conditional \"AMDEP\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+if test -z "${am__fastdepCC_TRUE}" && test -z "${am__fastdepCC_FALSE}"; then
+  as_fn_error $? "conditional \"am__fastdepCC\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
+
+: "${CONFIG_STATUS=./config.status}"
+ac_write_fail=0
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ $as_echo "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5
+$as_echo "$as_me: creating $CONFIG_STATUS" >&6;}
+as_write_fail=0
+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+
+SHELL=\${CONFIG_SHELL-$SHELL}
+export SHELL
+_ASEOF
+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1
+## -------------------- ##
+## M4sh Initialization. ##
+## -------------------- ##
+
+# Be more Bourne compatible
+DUALCASE=1; export DUALCASE # for MKS sh
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :
+  emulate sh
+  NULLCMD=:
+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+  setopt NO_GLOB_SUBST
+else
+  case `(set -o) 2>/dev/null` in #(
+  *posix*) :
+    set -o posix ;; #(
+  *) :
+     ;;
+esac
+fi
+
+
+as_nl='
+'
+export as_nl
+# Printing a long string crashes Solaris 7 /usr/bin/printf.
+as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo
+as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo
+# Prefer a ksh shell builtin over an external printf program on Solaris,
+# but without wasting forks for bash or zsh.
+if test -z "$BASH_VERSION$ZSH_VERSION" \
+    && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='print -r --'
+  as_echo_n='print -rn --'
+elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then
+  as_echo='printf %s\n'
+  as_echo_n='printf %s'
+else
+  if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then
+    as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"'
+    as_echo_n='/usr/ucb/echo -n'
+  else
+    as_echo_body='eval expr "X$1" : "X\\(.*\\)"'
+    as_echo_n_body='eval
+      arg=$1;
+      case $arg in #(
+      *"$as_nl"*)
+	expr "X$arg" : "X\\(.*\\)$as_nl";
+	arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;;
+      esac;
+      expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl"
+    '
+    export as_echo_n_body
+    as_echo_n='sh -c $as_echo_n_body as_echo'
+  fi
+  export as_echo_body
+  as_echo='sh -c $as_echo_body as_echo'
+fi
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  PATH_SEPARATOR=:
+  (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && {
+    (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 ||
+      PATH_SEPARATOR=';'
+  }
+fi
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent editors from complaining about space-tab.
+# (If _AS_PATH_WALK were called with IFS unset, it would disable word
+# splitting by setting IFS to empty value.)
+IFS=" ""	$as_nl"
+
+# Find who we are.  Look in the path if we contain no directory separator.
+as_myself=
+case $0 in #((
+  *[\\/]* ) as_myself=$0 ;;
+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+  done
+IFS=$as_save_IFS
+
+     ;;
+esac
+# We did not find ourselves, most probably we were run as `sh COMMAND'
+# in which case we are not to be found in the path.
+if test "x$as_myself" = x; then
+  as_myself=$0
+fi
+if test ! -f "$as_myself"; then
+  $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2
+  exit 1
+fi
+
+# Unset variables that we do not need and which cause bugs (e.g. in
+# pre-3.0 UWIN ksh).  But do not cause bugs in bash 2.01; the "|| exit 1"
+# suppresses any "Segmentation fault" message there.  '((' could
+# trigger a bug in pdksh 5.2.14.
+for as_var in BASH_ENV ENV MAIL MAILPATH
+do eval test x\${$as_var+set} = xset \
+  && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || :
+done
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+LC_ALL=C
+export LC_ALL
+LANGUAGE=C
+export LANGUAGE
+
+# CDPATH.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
+
+# as_fn_error STATUS ERROR [LINENO LOG_FD]
+# ----------------------------------------
+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are
+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the
+# script with STATUS, using 1 if that was 0.
+as_fn_error ()
+{
+  as_status=$1; test $as_status -eq 0 && as_status=1
+  if test "$4"; then
+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
+    $as_echo "$as_me:${as_lineno-$LINENO}: error: $2" >&$4
+  fi
+  $as_echo "$as_me: error: $2" >&2
+  as_fn_exit $as_status
+} # as_fn_error
+
+
+# as_fn_set_status STATUS
+# -----------------------
+# Set $? to STATUS, without forking.
+as_fn_set_status ()
+{
+  return $1
+} # as_fn_set_status
+
+# as_fn_exit STATUS
+# -----------------
+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.
+as_fn_exit ()
+{
+  set +e
+  as_fn_set_status $1
+  exit $1
+} # as_fn_exit
+
+# as_fn_unset VAR
+# ---------------
+# Portably unset VAR.
+as_fn_unset ()
+{
+  { eval $1=; unset $1;}
+}
+as_unset=as_fn_unset
+# as_fn_append VAR VALUE
+# ----------------------
+# Append the text in VALUE to the end of the definition contained in VAR. Take
+# advantage of any shell optimizations that allow amortized linear growth over
+# repeated appends, instead of the typical quadratic growth present in naive
+# implementations.
+if (eval "as_var=1; as_var+=2; test x\$as_var = x12") 2>/dev/null; then :
+  eval 'as_fn_append ()
+  {
+    eval $1+=\$2
+  }'
+else
+  as_fn_append ()
+  {
+    eval $1=\$$1\$2
+  }
+fi # as_fn_append
+
+# as_fn_arith ARG...
+# ------------------
+# Perform arithmetic evaluation on the ARGs, and store the result in the
+# global $as_val. Take advantage of shells that can avoid forks. The arguments
+# must be portable across $(()) and expr.
+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null; then :
+  eval 'as_fn_arith ()
+  {
+    as_val=$(( $* ))
+  }'
+else
+  as_fn_arith ()
+  {
+    as_val=`expr "$@" || test $? -eq 1`
+  }
+fi # as_fn_arith
+
+
+if expr a : '\(a\)' >/dev/null 2>&1 &&
+   test "X`expr 00001 : '.*\(...\)'`" = X001; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then
+  as_dirname=dirname
+else
+  as_dirname=false
+fi
+
+as_me=`$as_basename -- "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+ECHO_C= ECHO_N= ECHO_T=
+case `echo -n x` in #(((((
+-n*)
+  case `echo 'xy\c'` in
+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.
+  xy)  ECHO_C='\c';;
+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null
+       ECHO_T='	';;
+  esac;;
+*)
+  ECHO_N='-n';;
+esac
+
+rm -f conf$$ conf$$.exe conf$$.file
+if test -d conf$$.dir; then
+  rm -f conf$$.dir/conf$$.file
+else
+  rm -f conf$$.dir
+  mkdir conf$$.dir 2>/dev/null
+fi
+if (echo >conf$$.file) 2>/dev/null; then
+  if ln -s conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s='ln -s'
+    # ... but there are two gotchas:
+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.
+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.
+    # In both cases, we have to default to `cp -pR'.
+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||
+      as_ln_s='cp -pR'
+  elif ln conf$$.file conf$$ 2>/dev/null; then
+    as_ln_s=ln
+  else
+    as_ln_s='cp -pR'
+  fi
+else
+  as_ln_s='cp -pR'
+fi
+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file
+rmdir conf$$.dir 2>/dev/null
+
+
+# as_fn_mkdir_p
+# -------------
+# Create "$as_dir" as a directory, including parents if necessary.
+as_fn_mkdir_p ()
+{
+
+  case $as_dir in #(
+  -*) as_dir=./$as_dir;;
+  esac
+  test -d "$as_dir" || eval $as_mkdir_p || {
+    as_dirs=
+    while :; do
+      case $as_dir in #(
+      *\'*) as_qdir=`$as_echo "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(
+      *) as_qdir=$as_dir;;
+      esac
+      as_dirs="'$as_qdir' $as_dirs"
+      as_dir=`$as_dirname -- "$as_dir" ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+      test -d "$as_dir" && break
+    done
+    test -z "$as_dirs" || eval "mkdir $as_dirs"
+  } || test -d "$as_dir" || as_fn_error $? "cannot create directory $as_dir"
+
+
+} # as_fn_mkdir_p
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p='mkdir -p "$as_dir"'
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+
+# as_fn_executable_p FILE
+# -----------------------
+# Test if FILE is an executable regular file.
+as_fn_executable_p ()
+{
+  test -f "$1" && test -x "$1"
+} # as_fn_executable_p
+as_test_x='test -x'
+as_executable_p=as_fn_executable_p
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+exec 6>&1
+## ----------------------------------- ##
+## Main body of $CONFIG_STATUS script. ##
+## ----------------------------------- ##
+_ASEOF
+test $as_write_fail = 0 && chmod +x $CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# Save the log message, to keep $0 and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.
+ac_log="
+This file was extended by dash $as_me 0.5.11.2, which was
+generated by GNU Autoconf 2.69.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+on `(hostname || uname -n) 2>/dev/null | sed 1q`
+"
+
+_ACEOF
+
+case $ac_config_files in *"
+"*) set x $ac_config_files; shift; ac_config_files=$*;;
+esac
+
+case $ac_config_headers in *"
+"*) set x $ac_config_headers; shift; ac_config_headers=$*;;
+esac
+
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+# Files that config.status was made for.
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
+config_commands="$ac_config_commands"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+ac_cs_usage="\
+\`$as_me' instantiates files and other configuration actions
+from templates according to the current configuration.  Unless the files
+and actions are specified as TAGs, all are instantiated by default.
+
+Usage: $0 [OPTION]... [TAG]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number and configuration settings, then exit
+      --config     print configuration, then exit
+  -q, --quiet, --silent
+                   do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+      --file=FILE[:TEMPLATE]
+                   instantiate the configuration file FILE
+      --header=FILE[:TEMPLATE]
+                   instantiate the configuration header FILE
+
+Configuration files:
+$config_files
+
+Configuration headers:
+$config_headers
+
+Configuration commands:
+$config_commands
+
+Report bugs to the package provider."
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
+ac_cs_version="\\
+dash config.status 0.5.11.2
+configured by $0, generated by GNU Autoconf 2.69,
+  with options \\"\$ac_cs_config\\"
+
+Copyright (C) 2012 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+
+ac_pwd='$ac_pwd'
+srcdir='$srcdir'
+INSTALL='$INSTALL'
+MKDIR_P='$MKDIR_P'
+AWK='$AWK'
+test -n "\$AWK" || AWK=awk
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# The default lists apply if the user does not specify any file.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=?*)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=`expr "X$1" : 'X[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  --*=)
+    ac_option=`expr "X$1" : 'X\([^=]*\)='`
+    ac_optarg=
+    ac_shift=:
+    ;;
+  *)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --versio | --versi | --vers | --ver | --ve | --v | -V )
+    $as_echo "$ac_cs_version"; exit ;;
+  --config | --confi | --conf | --con | --co | --c )
+    $as_echo "$ac_cs_config"; exit ;;
+  --debug | --debu | --deb | --de | --d | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    '') as_fn_error $? "missing file argument" ;;
+    esac
+    as_fn_append CONFIG_FILES " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    case $ac_optarg in
+    *\'*) ac_optarg=`$as_echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    as_fn_append CONFIG_HEADERS " '$ac_optarg'"
+    ac_need_defaults=false;;
+  --he | --h)
+    # Conflict between --help and --header
+    as_fn_error $? "ambiguous option: \`$1'
+Try \`$0 --help' for more information.";;
+  --help | --hel | -h )
+    $as_echo "$ac_cs_usage"; exit ;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) as_fn_error $? "unrecognized option: \`$1'
+Try \`$0 --help' for more information." ;;
+
+  *) as_fn_append ac_config_targets " $1"
+     ac_need_defaults=false ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+if \$ac_cs_recheck; then
+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+  shift
+  \$as_echo "running CONFIG_SHELL=$SHELL \$*" >&6
+  CONFIG_SHELL='$SHELL'
+  export CONFIG_SHELL
+  exec "\$@"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+  $as_echo "$ac_log"
+} >&5
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+#
+# INIT-COMMANDS
+#
+AMDEP_TRUE="$AMDEP_TRUE" MAKE="${MAKE-make}"
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+
+# Handling of arguments.
+for ac_config_target in $ac_config_targets
+do
+  case $ac_config_target in
+    "config.h") CONFIG_HEADERS="$CONFIG_HEADERS config.h" ;;
+    "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
+    "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
+    "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
+
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  esac
+done
+
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason against having it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Hook for its removal unless debugging.
+# Note that there is a small window in which the directory will not be cleaned:
+# after its creation but before its name has been assigned to `$tmp'.
+$debug ||
+{
+  tmp= ac_tmp=
+  trap 'exit_status=$?
+  : "${ac_tmp:=$tmp}"
+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status
+' 0
+  trap 'as_fn_exit 1' 1 2 13 15
+}
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&
+  test -d "$tmp"
+}  ||
+{
+  tmp=./conf$$-$RANDOM
+  (umask 077 && mkdir "$tmp")
+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5
+ac_tmp=$tmp
+
+# Set up the scripts for CONFIG_FILES section.
+# No need to generate them if there are no CONFIG_FILES.
+# This happens for instance with `./config.status config.h'.
+if test -n "$CONFIG_FILES"; then
+
+
+ac_cr=`echo X | tr X '\015'`
+# On cygwin, bash can eat \r inside `` if the user requested igncr.
+# But we know of no other shell where ac_cr would be empty at this
+# point, so we can use a bashism as a fallback.
+if test "x$ac_cr" = x; then
+  eval ac_cr=\$\'\\r\'
+fi
+ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' </dev/null 2>/dev/null`
+if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then
+  ac_cs_awk_cr='\\r'
+else
+  ac_cs_awk_cr=$ac_cr
+fi
+
+echo 'BEGIN {' >"$ac_tmp/subs1.awk" &&
+_ACEOF
+
+
+{
+  echo "cat >conf$$subs.awk <<_ACEOF" &&
+  echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' &&
+  echo "_ACEOF"
+} >conf$$subs.sh ||
+  as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+ac_delim_num=`echo "$ac_subst_vars" | grep -c '^'`
+ac_delim='%!_!# '
+for ac_last_try in false false false false false :; do
+  . ./conf$$subs.sh ||
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+
+  ac_delim_n=`sed -n "s/.*$ac_delim\$/X/p" conf$$subs.awk | grep -c X`
+  if test $ac_delim_n = $ac_delim_num; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_STATUS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+rm -f conf$$subs.sh
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+cat >>"\$ac_tmp/subs1.awk" <<\\_ACAWK &&
+_ACEOF
+sed -n '
+h
+s/^/S["/; s/!.*/"]=/
+p
+g
+s/^[^!]*!//
+:repl
+t repl
+s/'"$ac_delim"'$//
+t delim
+:nl
+h
+s/\(.\{148\}\)..*/\1/
+t more1
+s/["\\]/\\&/g; s/^/"/; s/$/\\n"\\/
+p
+n
+b repl
+:more1
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t nl
+:delim
+h
+s/\(.\{148\}\)..*/\1/
+t more2
+s/["\\]/\\&/g; s/^/"/; s/$/"/
+p
+b
+:more2
+s/["\\]/\\&/g; s/^/"/; s/$/"\\/
+p
+g
+s/.\{148\}//
+t delim
+' <conf$$subs.awk | sed '
+/^[^""]/{
+  N
+  s/\n//
+}
+' >>$CONFIG_STATUS || ac_write_fail=1
+rm -f conf$$subs.awk
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+_ACAWK
+cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
+  for (key in S) S_is_set[key] = 1
+  FS = ""
+
+}
+{
+  line = $ 0
+  nfields = split(line, field, "@")
+  substed = 0
+  len = length(field[1])
+  for (i = 2; i < nfields; i++) {
+    key = field[i]
+    keylen = length(key)
+    if (S_is_set[key]) {
+      value = S[key]
+      line = substr(line, 1, len) "" value "" substr(line, len + keylen + 3)
+      len += length(value) + length(field[++i])
+      substed = 1
+    } else
+      len += 1 + keylen
+  }
+
+  print line
+}
+
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
+  sed "s/$ac_cr\$//; s/$ac_cr/$ac_cs_awk_cr/g"
+else
+  cat
+fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
+  || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
+_ACEOF
+
+# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
+# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=[	 ]*/{
+h
+s///
+s/^/:/
+s/[	 ]*$/:/
+s/:\$(srcdir):/:/g
+s/:\${srcdir}:/:/g
+s/:@srcdir@:/:/g
+s/^:*//
+s/:*$//
+x
+s/\(=[	 ]*\).*/\1/
+G
+s/\n//
+s/^[^=]*=[	 ]*$//
+}'
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+fi # test -n "$CONFIG_FILES"
+
+# Set up the scripts for CONFIG_HEADERS section.
+# No need to generate them if there are no CONFIG_HEADERS.
+# This happens for instance with `./config.status Makefile'.
+if test -n "$CONFIG_HEADERS"; then
+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||
+BEGIN {
+_ACEOF
+
+# Transform confdefs.h into an awk script `defines.awk', embedded as
+# here-document in config.status, that substitutes the proper values into
+# config.h.in to produce config.h.
+
+# Create a delimiter string that does not exist in confdefs.h, to ease
+# handling of long lines.
+ac_delim='%!_!# '
+for ac_last_try in false false :; do
+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
+  if test -z "$ac_tt"; then
+    break
+  elif $ac_last_try; then
+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5
+  else
+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
+  fi
+done
+
+# For the awk script, D is an array of macro values keyed by name,
+# likewise P contains macro parameters if any.  Preserve backslash
+# newline sequences.
+
+ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
+sed -n '
+s/.\{148\}/&'"$ac_delim"'/g
+t rset
+:rset
+s/^[	 ]*#[	 ]*define[	 ][	 ]*/ /
+t def
+d
+:def
+s/\\$//
+t bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3"/p
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2"/p
+d
+:bsnl
+s/["\\]/\\&/g
+s/^ \('"$ac_word_re"'\)\(([^()]*)\)[	 ]*\(.*\)/P["\1"]="\2"\
+D["\1"]=" \3\\\\\\n"\\/p
+t cont
+s/^ \('"$ac_word_re"'\)[	 ]*\(.*\)/D["\1"]=" \2\\\\\\n"\\/p
+t cont
+d
+:cont
+n
+s/.\{148\}/&'"$ac_delim"'/g
+t clear
+:clear
+s/\\$//
+t bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/"/p
+d
+:bsnlc
+s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
+b cont
+' <confdefs.h | sed '
+s/'"$ac_delim"'/"\\\
+"/g' >>$CONFIG_STATUS || ac_write_fail=1
+
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  for (key in D) D_is_set[key] = 1
+  FS = ""
+}
+/^[\t ]*#[\t ]*(define|undef)[\t ]+$ac_word_re([\t (]|\$)/ {
+  line = \$ 0
+  split(line, arg, " ")
+  if (arg[1] == "#") {
+    defundef = arg[2]
+    mac1 = arg[3]
+  } else {
+    defundef = substr(arg[1], 2)
+    mac1 = arg[2]
+  }
+  split(mac1, mac2, "(") #)
+  macro = mac2[1]
+  prefix = substr(line, 1, index(line, defundef) - 1)
+  if (D_is_set[macro]) {
+    # Preserve the white space surrounding the "#".
+    print prefix "define", macro P[macro] D[macro]
+    next
+  } else {
+    # Replace #undef with comments.  This is necessary, for example,
+    # in the case of _POSIX_SOURCE, which is predefined and required
+    # on some systems where configure will not decide to define it.
+    if (defundef == "undef") {
+      print "/*", prefix defundef, macro, "*/"
+      next
+    }
+  }
+}
+{ print }
+_ACAWK
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
+fi # test -n "$CONFIG_HEADERS"
+
+
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    :C $CONFIG_COMMANDS"
+shift
+for ac_tag
+do
+  case $ac_tag in
+  :[FHLC]) ac_mode=$ac_tag; continue;;
+  esac
+  case $ac_mode$ac_tag in
+  :[FHL]*:*);;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :[FH]-) ac_tag=-:-;;
+  :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
+  esac
+  ac_save_IFS=$IFS
+  IFS=:
+  set x $ac_tag
+  IFS=$ac_save_IFS
+  shift
+  ac_file=$1
+  shift
+
+  case $ac_mode in
+  :L) ac_source=$1;;
+  :[FH])
+    ac_file_inputs=
+    for ac_f
+    do
+      case $ac_f in
+      -) ac_f="$ac_tmp/stdin";;
+      *) # Look for the file first in the build tree, then in the source tree
+	 # (if the path is not absolute).  The absolute path cannot be DOS-style,
+	 # because $ac_f cannot contain `:'.
+	 test -f "$ac_f" ||
+	   case $ac_f in
+	   [\\/$]*) false;;
+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
+	   esac ||
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+      esac
+      case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
+      as_fn_append ac_file_inputs " '$ac_f'"
+    done
+
+    # Let's still pretend it is `configure' which instantiates (i.e., don't
+    # use $as_me), people would be surprised to read:
+    #    /* config.h.  Generated by config.status.  */
+    configure_input='Generated from '`
+	  $as_echo "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'
+	`' by configure.'
+    if test x"$ac_file" != x-; then
+      configure_input="$ac_file.  $configure_input"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5
+$as_echo "$as_me: creating $ac_file" >&6;}
+    fi
+    # Neutralize special characters interpreted by sed in replacement strings.
+    case $configure_input in #(
+    *\&* | *\|* | *\\* )
+       ac_sed_conf_input=`$as_echo "$configure_input" |
+       sed 's/[\\\\&|]/\\\\&/g'`;; #(
+    *) ac_sed_conf_input=$configure_input;;
+    esac
+
+    case $ac_tag in
+    *:-:* | *:-) cat >"$ac_tmp/stdin" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+    esac
+    ;;
+  esac
+
+  ac_dir=`$as_dirname -- "$ac_file" ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+  as_dir="$ac_dir"; as_fn_mkdir_p
+  ac_builddir=.
+
+case "$ac_dir" in
+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;
+*)
+  ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'`
+  # A ".." for each directory in $ac_dir_suffix.
+  ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`
+  case $ac_top_builddir_sub in
+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;
+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;
+  esac ;;
+esac
+ac_abs_top_builddir=$ac_pwd
+ac_abs_builddir=$ac_pwd$ac_dir_suffix
+# for backward compatibility:
+ac_top_builddir=$ac_top_build_prefix
+
+case $srcdir in
+  .)  # We are building in place.
+    ac_srcdir=.
+    ac_top_srcdir=$ac_top_builddir_sub
+    ac_abs_top_srcdir=$ac_pwd ;;
+  [\\/]* | ?:[\\/]* )  # Absolute name.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir
+    ac_abs_top_srcdir=$srcdir ;;
+  *) # Relative name.
+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_build_prefix$srcdir
+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;
+esac
+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix
+
+
+  case $ac_mode in
+  :F)
+  #
+  # CONFIG_FILE
+  #
+
+  case $INSTALL in
+  [\\/$]* | ?:[\\/]* ) ac_INSTALL=$INSTALL ;;
+  *) ac_INSTALL=$ac_top_build_prefix$INSTALL ;;
+  esac
+  ac_MKDIR_P=$MKDIR_P
+  case $MKDIR_P in
+  [\\/$]* | ?:[\\/]* ) ;;
+  */*) ac_MKDIR_P=$ac_top_build_prefix$MKDIR_P ;;
+  esac
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+# If the template does not know about datarootdir, expand it.
+# FIXME: This hack should be removed a few years after 2.60.
+ac_datarootdir_hack=; ac_datarootdir_seen=
+ac_sed_dataroot='
+/datarootdir/ {
+  p
+  q
+}
+/@datadir@/p
+/@docdir@/p
+/@infodir@/p
+/@localedir@/p
+/@mandir@/p'
+case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in
+*datarootdir*) ac_datarootdir_seen=yes;;
+*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*)
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5
+$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;}
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+  ac_datarootdir_hack='
+  s&@datadir@&$datadir&g
+  s&@docdir@&$docdir&g
+  s&@infodir@&$infodir&g
+  s&@localedir@&$localedir&g
+  s&@mandir@&$mandir&g
+  s&\\\${datarootdir}&$datarootdir&g' ;;
+esac
+_ACEOF
+
+# Neutralize VPATH when `$srcdir' = `.'.
+# Shell code in configure.ac might set extrasub.
+# FIXME: do we really want to maintain this feature?
+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
+ac_sed_extra="$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s|@configure_input@|$ac_sed_conf_input|;t t
+s&@top_builddir@&$ac_top_builddir_sub&;t t
+s&@top_build_prefix@&$ac_top_build_prefix&;t t
+s&@srcdir@&$ac_srcdir&;t t
+s&@abs_srcdir@&$ac_abs_srcdir&;t t
+s&@top_srcdir@&$ac_top_srcdir&;t t
+s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t
+s&@builddir@&$ac_builddir&;t t
+s&@abs_builddir@&$ac_abs_builddir&;t t
+s&@abs_top_builddir@&$ac_abs_top_builddir&;t t
+s&@INSTALL@&$ac_INSTALL&;t t
+s&@MKDIR_P@&$ac_MKDIR_P&;t t
+$ac_datarootdir_hack
+"
+eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \
+  >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+
+test -z "$ac_datarootdir_hack$ac_datarootdir_seen" &&
+  { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } &&
+  { ac_out=`sed -n '/^[	 ]*datarootdir[	 ]*:*=/p' \
+      "$ac_tmp/out"`; test -z "$ac_out"; } &&
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&5
+$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir'
+which seems to be undefined.  Please make sure it is defined" >&2;}
+
+  rm -f "$ac_tmp/stdin"
+  case $ac_file in
+  -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";;
+  *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";;
+  esac \
+  || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+ ;;
+  :H)
+  #
+  # CONFIG_HEADER
+  #
+  if test x"$ac_file" != x-; then
+    {
+      $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"
+    } >"$ac_tmp/config.h" \
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then
+      { $as_echo "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5
+$as_echo "$as_me: $ac_file is unchanged" >&6;}
+    else
+      rm -f "$ac_file"
+      mv "$ac_tmp/config.h" "$ac_file" \
+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5
+    fi
+  else
+    $as_echo "/* $configure_input  */" \
+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \
+      || as_fn_error $? "could not create -" "$LINENO" 5
+  fi
+# Compute "$ac_file"'s index in $config_headers.
+_am_arg="$ac_file"
+_am_stamp_count=1
+for _am_header in $config_headers :; do
+  case $_am_header in
+    $_am_arg | $_am_arg:* )
+      break ;;
+    * )
+      _am_stamp_count=`expr $_am_stamp_count + 1` ;;
+  esac
+done
+echo "timestamp for $_am_arg" >`$as_dirname -- "$_am_arg" ||
+$as_expr X"$_am_arg" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$_am_arg" : 'X\(//\)[^/]' \| \
+	 X"$_am_arg" : 'X\(//\)$' \| \
+	 X"$_am_arg" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$_am_arg" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`/stamp-h$_am_stamp_count
+ ;;
+
+  :C)  { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
+$as_echo "$as_me: executing $ac_file commands" >&6;}
+ ;;
+  esac
+
+
+  case $ac_file$ac_mode in
+    "depfiles":C) test x"$AMDEP_TRUE" != x"" || {
+  # Older Autoconf quotes --file arguments for eval, but not when files
+  # are listed without --file.  Let's play safe and only enable the eval
+  # if we detect the quoting.
+  # TODO: see whether this extra hack can be removed once we start
+  # requiring Autoconf 2.70 or later.
+  case $CONFIG_FILES in #(
+  *\'*) :
+    eval set x "$CONFIG_FILES" ;; #(
+  *) :
+    set x $CONFIG_FILES ;; #(
+  *) :
+     ;;
+esac
+  shift
+  # Used to flag and report bootstrapping failures.
+  am_rc=0
+  for am_mf
+  do
+    # Strip MF so we end up with the name of the file.
+    am_mf=`$as_echo "$am_mf" | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile which includes
+    # dependency-tracking related rules and includes.
+    # Grep'ing the whole file directly is not great: AIX grep has a line
+    # limit of 2048, but all sed's we know have understand at least 4000.
+    sed -n 's,^am--depfiles:.*,X,p' "$am_mf" | grep X >/dev/null 2>&1 \
+      || continue
+    am_dirpart=`$as_dirname -- "$am_mf" ||
+$as_expr X"$am_mf" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$am_mf" : 'X\(//\)[^/]' \| \
+	 X"$am_mf" : 'X\(//\)$' \| \
+	 X"$am_mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X"$am_mf" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)[^/].*/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+    am_filepart=`$as_basename -- "$am_mf" ||
+$as_expr X/"$am_mf" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$am_mf" : 'X\(//\)$' \| \
+	 X"$am_mf" : 'X\(/\)' \| . 2>/dev/null ||
+$as_echo X/"$am_mf" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\/\)$/{
+	    s//\1/
+	    q
+	  }
+	  /^X\/\(\/\).*/{
+	    s//\1/
+	    q
+	  }
+	  s/.*/./; q'`
+    { echo "$as_me:$LINENO: cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles" >&5
+   (cd "$am_dirpart" \
+      && sed -e '/# am--include-marker/d' "$am_filepart" \
+        | $MAKE -f - am--depfiles) >&5 2>&5
+   ac_status=$?
+   echo "$as_me:$LINENO: \$? = $ac_status" >&5
+   (exit $ac_status); } || am_rc=$?
+  done
+  if test $am_rc -ne 0; then
+    { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
+$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
+as_fn_error $? "Something went wrong bootstrapping makefile fragments
+    for automatic dependency tracking.  If GNU make was not used, consider
+    re-running the configure script with MAKE=\"gmake\" (or whatever is
+    necessary).  You can also try re-running configure with the
+    '--disable-dependency-tracking' option to at least be able to build
+    the package (albeit without support for automatic dependency tracking).
+See \`config.log' for more details" "$LINENO" 5; }
+  fi
+  { am_dirpart=; unset am_dirpart;}
+  { am_filepart=; unset am_filepart;}
+  { am_mf=; unset am_mf;}
+  { am_rc=; unset am_rc;}
+  rm -f conftest-deps.mk
+}
+ ;;
+
+  esac
+done # for ac_tag
+
+
+as_fn_exit 0
+_ACEOF
+ac_clean_files=$ac_clean_files_save
+
+test $ac_write_fail = 0 ||
+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || as_fn_exit 1
+fi
+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
+$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
+fi
+
diff --git a/configure.ac b/bin/dash/configure.ac
index d06b9044..dc96b748 100644
--- a/configure.ac
+++ b/bin/dash/configure.ac
@@ -169,18 +169,21 @@ if test "$have_st_mtim" = "yes"; then
 		[Define if your `struct stat' has `st_mtim'])
 fi
 
-AC_ARG_WITH(libedit, AS_HELP_STRING(--with-libedit, [Compile with libedit support]))
+AC_ARG_WITH(libedit,
+	AS_HELP_STRING(--without-libedit, [Compile without libedit support]))
 use_libedit=
-if test "$with_libedit" = "yes"; then
+if test "$with_libedit" != "no"; then
 	AC_CHECK_LIB(edit, history_init, [
 		AC_CHECK_HEADER([histedit.h], [use_libedit="yes"],
 				AC_MSG_ERROR(
-					[Can't find required header files.]))])
+					[Can't find required header files.]))], [
+		AC_MSG_ERROR([Can't find libedit.])])
 fi
 if test "$use_libedit" != "yes"; then
 	AC_DEFINE([SMALL], 1, [Define if you build with -DSMALL])
 else
 	export LIBS="$LIBS -ledit"
+	AC_CHECK_FUNCS(_el_fn_sh_complete)
 fi
 AC_ARG_ENABLE(lineno, AS_HELP_STRING(--disable-lineno, \
 				     [Disable LINENO support]))
diff --git a/bin/dash/depcomp b/bin/dash/depcomp
new file mode 100755
index 00000000..6b391623
--- /dev/null
+++ b/bin/dash/depcomp
@@ -0,0 +1,791 @@
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2020 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+  '')
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+    exit 1;
+    ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+  depmode     Dependency tracking mode.
+  source      Source file read by 'PROGRAMS ARGS'.
+  object      Object file output by 'PROGRAMS ARGS'.
+  DEPDIR      directory where to store dependencies.
+  depfile     Dependency file to output.
+  tmpdepfile  Temporary file to use when outputting dependencies.
+  libtool     Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "depcomp $scriptversion"
+    exit $?
+    ;;
+esac
+
+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+  echo "depcomp: Variables source, object and depmode must be set" 1>&2
+  exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Avoid interferences from the environment.
+gccflag= dashmflag=
+
+# Some modes work just like other modes, but use different flags.  We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write.  Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+  # HP compiler uses -M and no extra arg.
+  gccflag=-M
+  depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+  # This is just like dashmstdout with a different argument.
+  dashmflag=-xM
+  depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+  # This is just like msvisualcpp but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvisualcpp
+fi
+
+if test "$depmode" = msvc7msys; then
+  # This is just like msvc7 but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvc7
+fi
+
+if test "$depmode" = xlc; then
+  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+  gccflag=-qmakedep=gcc,-MF
+  depmode=gcc
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff.  Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am.  Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+  for arg
+  do
+    case $arg in
+    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+    *)  set fnord "$@" "$arg" ;;
+    esac
+    shift # fnord
+    shift # $arg
+  done
+  "$@"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  mv "$tmpdepfile" "$depfile"
+  ;;
+
+gcc)
+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).
+## There are various ways to get dependency output from gcc.  Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+##   up in a subdir.  Having to rename by hand is ugly.
+##   (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.
+## - Using -M directly means running the compiler twice (even worse
+##   than renaming).
+  if test -z "$gccflag"; then
+    gccflag=-MD,
+  fi
+  "$@" -Wp,"$gccflag$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The second -e expression handles DOS-style file names with drive
+  # letters.
+  sed -e 's/^[^:]*: / /' \
+      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the "deleted header file" problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header).  We avoid this by adding
+## dummy dependencies for each header file.  Too bad gcc doesn't do
+## this for us directly.
+## Some versions of gcc put a space before the ':'.  On the theory
+## that the space means something, we add a space to the output as
+## well.  hp depmode also adds that space, but also prefixes the VPATH
+## to the object.  Take care to not repeat it in the output.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+sgi)
+  if test "$libtool" = yes; then
+    "$@" "-Wp,-MDupdate,$tmpdepfile"
+  else
+    "$@" -MDupdate "$tmpdepfile"
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+
+  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
+    echo "$object : \\" > "$depfile"
+    # Clip off the initial element (the dependent).  Don't try to be
+    # clever and replace this with sed code, as IRIX sed won't handle
+    # lines with more than a fixed number of characters (4096 in
+    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
+    # the IRIX cc adds comments like '#:fec' to the end of the
+    # dependency line.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"
+    echo >> "$depfile"
+    # The second pass generates a dummy entry for each header file.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+      >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile"
+  ;;
+
+xlc)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+aix)
+  # The C for AIX Compiler uses -M and outputs the dependencies
+  # in a .u file.  In older versions, this file always lives in the
+  # current directory.  Also, the AIX compiler puts '$object:' at the
+  # start of each line; $object doesn't have directory information.
+  # Version 6 uses the directory in both cases.
+  set_dir_from "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$base.u
+    tmpdepfile3=$dir.libs/$base.u
+    "$@" -Wc,-M
+  else
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$dir$base.u
+    tmpdepfile3=$dir$base.u
+    "$@" -M
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using '\' :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
+
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir=$base.d-lock
+  trap "
+    echo '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0; do
+    # mkdir is a portable test-and-set.
+    if mkdir "$lockdir" 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
+      stat=$?
+      # Release the lock.
+      rmdir "$lockdir"
+      break
+    else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$lockdir" && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi
+
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each line is of the form `foo.o: dependent.h',
+  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # `$object: dependent.h' and one to simply `dependent.h:'.
+  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp2)
+  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+  # compilers, which have integrated preprocessors.  The correct option
+  # to use with these is +Maked; it writes dependencies to a file named
+  # 'foo.d', which lands next to the object file, wherever that
+  # happens to be.
+  # Much of this is similar to the tru64 case; see comments there.
+  set_dir_from  "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir.libs/$base.d
+    "$@" -Wc,+Maked
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    "$@" +Maked
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+     rm -f "$tmpdepfile1" "$tmpdepfile2"
+     exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  if test -f "$tmpdepfile"; then
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.
+    sed -ne '2,${
+               s/^ *//
+               s/ \\*$//
+               s/$/:/
+               p
+             }' "$tmpdepfile" >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile" "$tmpdepfile2"
+  ;;
+
+tru64)
+  # The Tru64 compiler uses -MD to generate dependencies as a side
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+  # dependencies in 'foo.d' instead, so we check for that too.
+  # Subdirectories are respected.
+  set_dir_from  "$object"
+  set_base_from "$object"
+
+  if test "$libtool" = yes; then
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
+    # in $dir$base.o.d.  We have to check for both files, because
+    # one of the two compilations can be disabled.  We should prefer
+    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+    # automatically cleaned when .libs/ is deleted, while ignoring
+    # the former would cause a distcleancheck panic.
+    tmpdepfile1=$dir$base.o.d          # libtool 1.5
+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
+    "$@" -Wc,-MD
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    tmpdepfile3=$dir$base.d
+    "$@" -MD
+  fi
+
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
+  ;;
+
+msvc7)
+  if test "$libtool" = yes; then
+    showIncludes=-Wc,-showIncludes
+  else
+    showIncludes=-showIncludes
+  fi
+  "$@" $showIncludes > "$tmpdepfile"
+  stat=$?
+  grep -v '^Note: including file: ' "$tmpdepfile"
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The first sed program below extracts the file names and escapes
+  # backslashes for cygpath.  The second sed program outputs the file
+  # name when reading, but also accumulates all include files in the
+  # hold buffer in order to output them again at the end.  This only
+  # works with sed implementations that can handle large buffers.
+  sed < "$tmpdepfile" -n '
+/^Note: including file:  *\(.*\)/ {
+  s//\1/
+  s/\\/\\\\/g
+  p
+}' | $cygpath_u | sort -u | sed -n '
+s/ /\\ /g
+s/\(.*\)/'"$tab"'\1 \\/p
+s/.\(.*\) \\/\1:/
+H
+$ {
+  s/.*/'"$tab"'/
+  G
+  p
+}' >> "$depfile"
+  echo >> "$depfile" # make sure the fragment doesn't end with a backslash
+  rm -f "$tmpdepfile"
+  ;;
+
+msvc7msys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+#nosideeffect)
+  # This comment above is used by automake to tell side-effect
+  # dependency tracking mechanisms from slower ones.
+
+dashmstdout)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout, regardless of -o.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  test -z "$dashmflag" && dashmflag=-M
+  # Require at least two characters before searching for ':'
+  # in the target name.  This is to cope with DOS-style filenames:
+  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
+  "$@" $dashmflag |
+    sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
+  rm -f "$depfile"
+  cat < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this sed invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+dashXmstdout)
+  # This case only exists to satisfy depend.m4.  It is never actually
+  # run, as this mode is specially recognized in the preamble.
+  exit 1
+  ;;
+
+makedepend)
+  "$@" || exit $?
+  # Remove any Libtool call
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+  # X makedepend
+  shift
+  cleared=no eat=no
+  for arg
+  do
+    case $cleared in
+    no)
+      set ""; shift
+      cleared=yes ;;
+    esac
+    if test $eat = yes; then
+      eat=no
+      continue
+    fi
+    case "$arg" in
+    -D*|-I*)
+      set fnord "$@" "$arg"; shift ;;
+    # Strip any option that makedepend may not understand.  Remove
+    # the object too, otherwise makedepend will parse it as a source file.
+    -arch)
+      eat=yes ;;
+    -*|$object)
+      ;;
+    *)
+      set fnord "$@" "$arg"; shift ;;
+    esac
+  done
+  obj_suffix=`echo "$object" | sed 's/^.*\././'`
+  touch "$tmpdepfile"
+  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
+  rm -f "$depfile"
+  # makedepend may prepend the VPATH from the source file name to the object.
+  # No need to regex-escape $object, excess matching of '.' is harmless.
+  sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process the last invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed '1,2d' "$tmpdepfile" \
+    | tr ' ' "$nl" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile" "$tmpdepfile".bak
+  ;;
+
+cpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  # Remove '-o $object'.
+  IFS=" "
+  for arg
+  do
+    case $arg in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    *)
+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
+    esac
+  done
+
+  "$@" -E \
+    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+    | sed '$ s: \\$::' > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  cat < "$tmpdepfile" >> "$depfile"
+  sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvisualcpp)
+  # Important note: in order to support this mode, a compiler *must*
+  # always write the preprocessed file to stdout.
+  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
+  IFS=" "
+  for arg
+  do
+    case "$arg" in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
+    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
+        set fnord "$@"
+        shift
+        shift
+        ;;
+    *)
+        set fnord "$@" "$arg"
+        shift
+        shift
+        ;;
+    esac
+  done
+  "$@" -E 2>/dev/null |
+  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
+  echo "$tab" >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvcmsys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+none)
+  exec "$@"
+  ;;
+
+*)
+  echo "Unknown depmode $depmode" 1>&2
+  exit 1
+  ;;
+esac
+
+exit 0
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/bin/dash/install-sh b/bin/dash/install-sh
new file mode 100755
index 00000000..ec298b53
--- /dev/null
+++ b/bin/dash/install-sh
@@ -0,0 +1,541 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2020-11-14.01; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# 'make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+tab='	'
+nl='
+'
+IFS=" $tab$nl"
+
+# Set DOITPROG to "echo" to test this script.
+
+doit=${DOITPROG-}
+doit_exec=${doit:-exec}
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+# Create dirs (including intermediate dirs) using mode 755.
+# This is like GNU 'install' as of coreutils 8.32 (2020).
+mkdir_umask=22
+
+backupsuffix=
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+is_target_a_directory=possibly
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+     --help     display this help and exit.
+     --version  display version info and exit.
+
+  -c            (ignored)
+  -C            install only if different (preserve data modification time)
+  -d            create directories instead of installing files.
+  -g GROUP      $chgrpprog installed files to GROUP.
+  -m MODE       $chmodprog installed files to MODE.
+  -o USER       $chownprog installed files to USER.
+  -p            pass -p to $cpprog.
+  -s            $stripprog installed files.
+  -S SUFFIX     attempt to back up existing files, with suffix SUFFIX.
+  -t DIRECTORY  install into DIRECTORY.
+  -T            report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+  RMPROG STRIPPROG
+
+By default, rm is invoked with -f; when overridden with RMPROG,
+it's up to you to specify -f if you want it.
+
+If -S is not specified, no backups are attempted.
+
+Email bug reports to bug-automake@gnu.org.
+Automake home page: https://www.gnu.org/software/automake/
+"
+
+while test $# -ne 0; do
+  case $1 in
+    -c) ;;
+
+    -C) copy_on_change=true;;
+
+    -d) dir_arg=true;;
+
+    -g) chgrpcmd="$chgrpprog $2"
+        shift;;
+
+    --help) echo "$usage"; exit $?;;
+
+    -m) mode=$2
+        case $mode in
+          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
+            echo "$0: invalid mode: $mode" >&2
+            exit 1;;
+        esac
+        shift;;
+
+    -o) chowncmd="$chownprog $2"
+        shift;;
+
+    -p) cpprog="$cpprog -p";;
+
+    -s) stripcmd=$stripprog;;
+
+    -S) backupsuffix="$2"
+        shift;;
+
+    -t)
+        is_target_a_directory=always
+        dst_arg=$2
+        # Protect names problematic for 'test' and other utilities.
+        case $dst_arg in
+          -* | [=\(\)!]) dst_arg=./$dst_arg;;
+        esac
+        shift;;
+
+    -T) is_target_a_directory=never;;
+
+    --version) echo "$0 $scriptversion"; exit $?;;
+
+    --) shift
+        break;;
+
+    -*) echo "$0: invalid option: $1" >&2
+        exit 1;;
+
+    *)  break;;
+  esac
+  shift
+done
+
+# We allow the use of options -d and -T together, by making -d
+# take the precedence; this is for compatibility with GNU install.
+
+if test -n "$dir_arg"; then
+  if test -n "$dst_arg"; then
+    echo "$0: target directory not allowed when installing a directory." >&2
+    exit 1
+  fi
+fi
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+  # When -d is used, all remaining arguments are directories to create.
+  # When -t is used, the destination is already specified.
+  # Otherwise, the last argument is the destination.  Remove it from $@.
+  for arg
+  do
+    if test -n "$dst_arg"; then
+      # $@ is not empty: it contains at least $arg.
+      set fnord "$@" "$dst_arg"
+      shift # fnord
+    fi
+    shift # arg
+    dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
+  done
+fi
+
+if test $# -eq 0; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call 'install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
+fi
+
+if test -z "$dir_arg"; then
+  if test $# -gt 1 || test "$is_target_a_directory" = always; then
+    if test ! -d "$dst_arg"; then
+      echo "$0: $dst_arg: Is not a directory." >&2
+      exit 1
+    fi
+  fi
+fi
+
+if test -z "$dir_arg"; then
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
+
+  # Set umask so as not to create temps with too-generous modes.
+  # However, 'strip' requires both read and write access to temps.
+  case $mode in
+    # Optimize common cases.
+    *644) cp_umask=133;;
+    *755) cp_umask=22;;
+
+    *[0-7])
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw='% 200'
+      fi
+      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+    *)
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw=,u+rw
+      fi
+      cp_umask=$mode$u_plus_rw;;
+  esac
+fi
+
+for src
+do
+  # Protect names problematic for 'test' and other utilities.
+  case $src in
+    -* | [=\(\)!]) src=./$src;;
+  esac
+
+  if test -n "$dir_arg"; then
+    dst=$src
+    dstdir=$dst
+    test -d "$dstdir"
+    dstdir_status=$?
+    # Don't chown directories that already exist.
+    if test $dstdir_status = 0; then
+      chowncmd=""
+    fi
+  else
+
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
+
+    if test -z "$dst_arg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
+    dst=$dst_arg
+
+    # If destination is a directory, append the input filename.
+    if test -d "$dst"; then
+      if test "$is_target_a_directory" = never; then
+        echo "$0: $dst_arg: Is a directory" >&2
+        exit 1
+      fi
+      dstdir=$dst
+      dstbase=`basename "$src"`
+      case $dst in
+	*/) dst=$dst$dstbase;;
+	*)  dst=$dst/$dstbase;;
+      esac
+      dstdir_status=0
+    else
+      dstdir=`dirname "$dst"`
+      test -d "$dstdir"
+      dstdir_status=$?
+    fi
+  fi
+
+  case $dstdir in
+    */) dstdirslash=$dstdir;;
+    *)  dstdirslash=$dstdir/;;
+  esac
+
+  obsolete_mkdir_used=false
+
+  if test $dstdir_status != 0; then
+    case $posix_mkdir in
+      '')
+        # With -d, create the new directory with the user-specified mode.
+        # Otherwise, rely on $mkdir_umask.
+        if test -n "$dir_arg"; then
+          mkdir_mode=-m$mode
+        else
+          mkdir_mode=
+        fi
+
+        posix_mkdir=false
+	# The $RANDOM variable is not portable (e.g., dash).  Use it
+	# here however when possible just to lower collision chance.
+	tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+
+	trap '
+	  ret=$?
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
+	  exit $ret
+	' 0
+
+	# Because "mkdir -p" follows existing symlinks and we likely work
+	# directly in world-writeable /tmp, make sure that the '$tmpdir'
+	# directory is successfully created first before we actually test
+	# 'mkdir -p'.
+	if (umask $mkdir_umask &&
+	    $mkdirprog $mkdir_mode "$tmpdir" &&
+	    exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
+	then
+	  if test -z "$dir_arg" || {
+	       # Check for POSIX incompatibilities with -m.
+	       # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+	       # other-writable bit of parent directory when it shouldn't.
+	       # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+	       test_tmpdir="$tmpdir/a"
+	       ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
+	       case $ls_ld_tmpdir in
+		 d????-?r-*) different_mode=700;;
+		 d????-?--*) different_mode=755;;
+		 *) false;;
+	       esac &&
+	       $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
+		 ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
+		 test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+	       }
+	     }
+	  then posix_mkdir=:
+	  fi
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
+	else
+	  # Remove any dirs left behind by ancient mkdir implementations.
+	  rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
+	fi
+	trap '' 0;;
+    esac
+
+    if
+      $posix_mkdir && (
+        umask $mkdir_umask &&
+        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+      )
+    then :
+    else
+
+      # mkdir does not conform to POSIX,
+      # or it failed possibly due to a race condition.  Create the
+      # directory the slow way, step by step, checking for races as we go.
+
+      case $dstdir in
+        /*) prefix='/';;
+        [-=\(\)!]*) prefix='./';;
+        *)  prefix='';;
+      esac
+
+      oIFS=$IFS
+      IFS=/
+      set -f
+      set fnord $dstdir
+      shift
+      set +f
+      IFS=$oIFS
+
+      prefixes=
+
+      for d
+      do
+        test X"$d" = X && continue
+
+        prefix=$prefix$d
+        if test -d "$prefix"; then
+          prefixes=
+        else
+          if $posix_mkdir; then
+            (umask $mkdir_umask &&
+             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+            # Don't fail if two instances are running concurrently.
+            test -d "$prefix" || exit 1
+          else
+            case $prefix in
+              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+              *) qprefix=$prefix;;
+            esac
+            prefixes="$prefixes '$qprefix'"
+          fi
+        fi
+        prefix=$prefix/
+      done
+
+      if test -n "$prefixes"; then
+        # Don't fail if two instances are running concurrently.
+        (umask $mkdir_umask &&
+         eval "\$doit_exec \$mkdirprog $prefixes") ||
+          test -d "$dstdir" || exit 1
+        obsolete_mkdir_used=true
+      fi
+    fi
+  fi
+
+  if test -n "$dir_arg"; then
+    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+  else
+
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=${dstdirslash}_inst.$$_
+    rmtmp=${dstdirslash}_rm.$$_
+
+    # Trap to clean up those temp files at exit.
+    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+    # Copy the file name to the temp name.
+    (umask $cp_umask &&
+     { test -z "$stripcmd" || {
+	 # Create $dsttmp read-write so that cp doesn't create it read-only,
+	 # which would cause strip to fail.
+	 if test -z "$doit"; then
+	   : >"$dsttmp" # No need to fork-exec 'touch'.
+	 else
+	   $doit touch "$dsttmp"
+	 fi
+       }
+     } &&
+     $doit_exec $cpprog "$src" "$dsttmp") &&
+
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+    # If -C, don't bother to copy if it wouldn't change the file.
+    if $copy_on_change &&
+       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
+       set -f &&
+       set X $old && old=:$2:$4:$5:$6 &&
+       set X $new && new=:$2:$4:$5:$6 &&
+       set +f &&
+       test "$old" = "$new" &&
+       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+    then
+      rm -f "$dsttmp"
+    else
+      # If $backupsuffix is set, and the file being installed
+      # already exists, attempt a backup.  Don't worry if it fails,
+      # e.g., if mv doesn't support -f.
+      if test -n "$backupsuffix" && test -f "$dst"; then
+        $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null
+      fi
+
+      # Rename the file to the real destination.
+      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+      # The rename failed, perhaps because mv can't rename something else
+      # to itself, or perhaps because mv is so ancient that it does not
+      # support -f.
+      {
+        # Now remove or move aside any old file at destination location.
+        # We try this two ways since rm can't unlink itself on some
+        # systems and the destination file might be busy for other
+        # reasons.  In this case, the final cleanup might fail but the new
+        # file should still install successfully.
+        {
+          test ! -f "$dst" ||
+          $doit $rmcmd "$dst" 2>/dev/null ||
+          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+            { $doit $rmcmd "$rmtmp" 2>/dev/null; :; }
+          } ||
+          { echo "$0: cannot unlink or rename $dst" >&2
+            (exit 1); exit 1
+          }
+        } &&
+
+        # Now rename the file to the real destination.
+        $doit $mvcmd "$dsttmp" "$dst"
+      }
+    fi || exit 1
+
+    trap '' 0
+  fi
+done
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/bin/dash/missing b/bin/dash/missing
new file mode 100755
index 00000000..8d0eaad2
--- /dev/null
+++ b/bin/dash/missing
@@ -0,0 +1,215 @@
+#! /bin/sh
+# Common wrapper for a few potentially missing GNU programs.
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1996-2020 Free Software Foundation, Inc.
+# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+if test $# -eq 0; then
+  echo 1>&2 "Try '$0 --help' for more information"
+  exit 1
+fi
+
+case $1 in
+
+  --is-lightweight)
+    # Used by our autoconf macros to check whether the available missing
+    # script is modern enough.
+    exit 0
+    ;;
+
+  --run)
+    # Back-compat with the calling convention used by older automake.
+    shift
+    ;;
+
+  -h|--h|--he|--hel|--help)
+    echo "\
+$0 [OPTION]... PROGRAM [ARGUMENT]...
+
+Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
+to PROGRAM being missing or too old.
+
+Options:
+  -h, --help      display this help and exit
+  -v, --version   output version information and exit
+
+Supported PROGRAM values:
+  aclocal   autoconf  autoheader   autom4te  automake  makeinfo
+  bison     yacc      flex         lex       help2man
+
+Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
+'g' are ignored when checking the name.
+
+Send bug reports to <bug-automake@gnu.org>."
+    exit $?
+    ;;
+
+  -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
+    echo "missing $scriptversion (GNU Automake)"
+    exit $?
+    ;;
+
+  -*)
+    echo 1>&2 "$0: unknown '$1' option"
+    echo 1>&2 "Try '$0 --help' for more information"
+    exit 1
+    ;;
+
+esac
+
+# Run the given program, remember its exit status.
+"$@"; st=$?
+
+# If it succeeded, we are done.
+test $st -eq 0 && exit 0
+
+# Also exit now if we it failed (or wasn't found), and '--version' was
+# passed; such an option is passed most likely to detect whether the
+# program is present and works.
+case $2 in --version|--help) exit $st;; esac
+
+# Exit code 63 means version mismatch.  This often happens when the user
+# tries to use an ancient version of a tool on a file that requires a
+# minimum version.
+if test $st -eq 63; then
+  msg="probably too old"
+elif test $st -eq 127; then
+  # Program was missing.
+  msg="missing on your system"
+else
+  # Program was found and executed, but failed.  Give up.
+  exit $st
+fi
+
+perl_URL=https://www.perl.org/
+flex_URL=https://github.com/westes/flex
+gnu_software_URL=https://www.gnu.org/software
+
+program_details ()
+{
+  case $1 in
+    aclocal|automake)
+      echo "The '$1' program is part of the GNU Automake package:"
+      echo "<$gnu_software_URL/automake>"
+      echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/autoconf>"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+    autoconf|autom4te|autoheader)
+      echo "The '$1' program is part of the GNU Autoconf package:"
+      echo "<$gnu_software_URL/autoconf/>"
+      echo "It also requires GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+  esac
+}
+
+give_advice ()
+{
+  # Normalize program name to check for.
+  normalized_program=`echo "$1" | sed '
+    s/^gnu-//; t
+    s/^gnu//; t
+    s/^g//; t'`
+
+  printf '%s\n' "'$1' is $msg."
+
+  configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
+  case $normalized_program in
+    autoconf*)
+      echo "You should only need it if you modified 'configure.ac',"
+      echo "or m4 files included by it."
+      program_details 'autoconf'
+      ;;
+    autoheader*)
+      echo "You should only need it if you modified 'acconfig.h' or"
+      echo "$configure_deps."
+      program_details 'autoheader'
+      ;;
+    automake*)
+      echo "You should only need it if you modified 'Makefile.am' or"
+      echo "$configure_deps."
+      program_details 'automake'
+      ;;
+    aclocal*)
+      echo "You should only need it if you modified 'acinclude.m4' or"
+      echo "$configure_deps."
+      program_details 'aclocal'
+      ;;
+   autom4te*)
+      echo "You might have modified some maintainer files that require"
+      echo "the 'autom4te' program to be rebuilt."
+      program_details 'autom4te'
+      ;;
+    bison*|yacc*)
+      echo "You should only need it if you modified a '.y' file."
+      echo "You may want to install the GNU Bison package:"
+      echo "<$gnu_software_URL/bison/>"
+      ;;
+    lex*|flex*)
+      echo "You should only need it if you modified a '.l' file."
+      echo "You may want to install the Fast Lexical Analyzer package:"
+      echo "<$flex_URL>"
+      ;;
+    help2man*)
+      echo "You should only need it if you modified a dependency" \
+           "of a man page."
+      echo "You may want to install the GNU Help2man package:"
+      echo "<$gnu_software_URL/help2man/>"
+    ;;
+    makeinfo*)
+      echo "You should only need it if you modified a '.texi' file, or"
+      echo "any other file indirectly affecting the aspect of the manual."
+      echo "You might want to install the Texinfo package:"
+      echo "<$gnu_software_URL/texinfo/>"
+      echo "The spurious makeinfo call might also be the consequence of"
+      echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
+      echo "want to install GNU make:"
+      echo "<$gnu_software_URL/make/>"
+      ;;
+    *)
+      echo "You might have modified some files without having the proper"
+      echo "tools for further handling them.  Check the 'README' file, it"
+      echo "often tells you about the needed prerequisites for installing"
+      echo "this package.  You may also peek at any GNU archive site, in"
+      echo "case some other package contains this missing '$1' program."
+      ;;
+  esac
+}
+
+give_advice "$1" | sed -e '1s/^/WARNING: /' \
+                       -e '2,$s/^/         /' >&2
+
+# Propagate the correct exit status (expected to be 127 for a program
+# not found, 63 for a program that failed due to version mismatch).
+exit $st
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:
diff --git a/src/.gitignore b/bin/dash/src/.gitignore
index 644eccb8..644eccb8 100644
--- a/src/.gitignore
+++ b/bin/dash/src/.gitignore
diff --git a/src/Makefile.am b/bin/dash/src/Makefile.am
index 17324653..fb8229f1 100644
--- a/src/Makefile.am
+++ b/bin/dash/src/Makefile.am
@@ -34,7 +34,7 @@ HELPERS = mkinit mksyntax mknodes mksignames
 
 BUILT_SOURCES = builtins.h nodes.h syntax.h token.h token_vars.h
 CLEANFILES = \
-	$(BUILT_SOURCES) $(patsubst %.o,%.c,$(dash_LDADD)) \
+	$(BUILT_SOURCES) $(dash_LDADD:%.o=%.c) \
 	$(HELPERS) builtins.def
 
 man_MANS = dash.1
@@ -44,27 +44,27 @@ EXTRA_DIST = \
 	mknodes.c nodetypes nodes.c.pat mksyntax.c mksignames.c
 
 token.h token_vars.h: mktokens
-	$(AM_V_GEN)$(SHELL) $^
+	$(AM_V_GEN)$(SHELL) mktokens
 
 builtins.def: builtins.def.in $(top_builddir)/config.h
-	$(AM_V_CC)$(COMPILE) -E -x c -o $@ $<
+	$(AM_V_CC)$(COMPILE) -E -x c -o $@ builtins.def.in
 
 builtins.c builtins.h: mkbuiltins builtins.def
-	$(AM_V_GEN)$(SHELL) $^
+	$(AM_V_GEN)$(SHELL) mkbuiltins builtins.def
 
 init.c: mkinit $(dash_CFILES)
-	$(AM_V_GEN)./$^
+	$(AM_V_GEN)./mkinit $(dash_CFILES)
 
 nodes.c nodes.h: mknodes nodetypes nodes.c.pat
-	$(AM_V_GEN)./$^
+	$(AM_V_GEN)./mknodes nodetypes nodes.c.pat
 
 syntax.c syntax.h: mksyntax
-	$(AM_V_GEN)./$^
+	$(AM_V_GEN)./mksyntax
 
 signames.c: mksignames
-	$(AM_V_GEN)./$^
+	$(AM_V_GEN)./mksignames
 
 mksyntax: token.h
 
-$(HELPERS): %: %.c
-	$(AM_V_CC)$(COMPILE_FOR_BUILD) -o $@ $<
+$(HELPERS):
+	$(AM_V_CC)$(COMPILE_FOR_BUILD) -o $@ $@.c
diff --git a/bin/dash/src/Makefile.in b/bin/dash/src/Makefile.in
new file mode 100644
index 00000000..ae25f565
--- /dev/null
+++ b/bin/dash/src/Makefile.in
@@ -0,0 +1,834 @@
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+# with or without modifications, as long as this notice is preserved.
+
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+	$(CPPFLAGS_FOR_BUILD) \
+	$(AM_CFLAGS_FOR_BUILD) $(CFLAGS_FOR_BUILD) 
+
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+	alias.c arith_yacc.c arith_yylex.c cd.c error.c eval.c exec.c expand.c \
+	histedit.c input.c jobs.c mail.c main.c memalloc.c miscbltin.c \
+	mystring.c options.c parser.c redir.c show.c trap.c output.c \
+	bltin/printf.c system.c bltin/test.c bltin/times.c var.c
+
+dash_SOURCES = \
+	$(dash_CFILES) \
+	alias.h arith_yacc.h bltin/bltin.h cd.h error.h eval.h exec.h \
+	expand.h \
+	init.h input.h jobs.h machdep.h mail.h main.h memalloc.h miscbltin.h \
+	myhistedit.h mystring.h options.h output.h parser.h redir.h shell.h \
+	show.h system.h trap.h var.h
+
+dash_LDADD = builtins.o init.o nodes.o signames.o syntax.o
+HELPERS = mkinit mksyntax mknodes mksignames
+BUILT_SOURCES = builtins.h nodes.h syntax.h token.h token_vars.h
+CLEANFILES = \
+	$(BUILT_SOURCES) $(dash_LDADD:%.o=%.c) \
+	$(HELPERS) builtins.def
+
+man_MANS = dash.1
+EXTRA_DIST = \
+	$(man_MANS) \
+	mktokens mkbuiltins builtins.def.in mkinit.c \
+	mknodes.c nodetypes nodes.c.pat mksyntax.c mksignames.c
+
+all: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am  $(am__configure_deps)
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+	  $(MKDIR_P) "$(DESTDIR)$(bindir)" || exit 1; \
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+	for p in $$list; do echo "$$p $$p"; done | \
+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n;h' \
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+	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
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+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
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+	while read type dir files; do \
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+	; done
+
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+	@$(NORMAL_UNINSTALL)
+	@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
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+	      -e 's/$$/$(EXEEXT)/' \
+	`; \
+	test -n "$$list" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(bindir)' && rm -f" $$files ")"; \
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+
+clean-binPROGRAMS:
+	-test -z "$(bin_PROGRAMS)" || rm -f $(bin_PROGRAMS)
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+	@$(MKDIR_P) bltin
+	@: > bltin/$(am__dirstamp)
+bltin/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) bltin/$(DEPDIR)
+	@: > bltin/$(DEPDIR)/$(am__dirstamp)
+bltin/printf.$(OBJEXT): bltin/$(am__dirstamp) \
+	bltin/$(DEPDIR)/$(am__dirstamp)
+bltin/test.$(OBJEXT): bltin/$(am__dirstamp) \
+	bltin/$(DEPDIR)/$(am__dirstamp)
+bltin/times.$(OBJEXT): bltin/$(am__dirstamp) \
+	bltin/$(DEPDIR)/$(am__dirstamp)
+
+dash$(EXEEXT): $(dash_OBJECTS) $(dash_DEPENDENCIES) $(EXTRA_dash_DEPENDENCIES) 
+	@rm -f dash$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(dash_OBJECTS) $(dash_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+	-rm -f bltin/*.$(OBJEXT)
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+	    test -f "$(distdir)/$$file" \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
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+	uninstall-binPROGRAMS uninstall-man uninstall-man1
+
+.PRECIOUS: Makefile
+
+
+token.h token_vars.h: mktokens
+	$(AM_V_GEN)$(SHELL) mktokens
+
+builtins.def: builtins.def.in $(top_builddir)/config.h
+	$(AM_V_CC)$(COMPILE) -E -x c -o $@ builtins.def.in
+
+builtins.c builtins.h: mkbuiltins builtins.def
+	$(AM_V_GEN)$(SHELL) mkbuiltins builtins.def
+
+init.c: mkinit $(dash_CFILES)
+	$(AM_V_GEN)./mkinit $(dash_CFILES)
+
+nodes.c nodes.h: mknodes nodetypes nodes.c.pat
+	$(AM_V_GEN)./mknodes nodetypes nodes.c.pat
+
+syntax.c syntax.h: mksyntax
+	$(AM_V_GEN)./mksyntax
+
+signames.c: mksignames
+	$(AM_V_GEN)./mksignames
+
+mksyntax: token.h
+
+$(HELPERS):
+	$(AM_V_CC)$(COMPILE_FOR_BUILD) -o $@ $@.c
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+# Tell versions [3.59,3.63) of GNU make to not export all variables.
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diff --git a/src/TOUR b/bin/dash/src/TOUR
index e30836e1..e30836e1 100644
--- a/src/TOUR
+++ b/bin/dash/src/TOUR
diff --git a/src/alias.c b/bin/dash/src/alias.c
index daeacbb8..daeacbb8 100644
--- a/src/alias.c
+++ b/bin/dash/src/alias.c
diff --git a/src/alias.h b/bin/dash/src/alias.h
index fb841d64..fb841d64 100644
--- a/src/alias.h
+++ b/bin/dash/src/alias.h
diff --git a/src/arith_yacc.c b/bin/dash/src/arith_yacc.c
index 1a087c32..1a087c32 100644
--- a/src/arith_yacc.c
+++ b/bin/dash/src/arith_yacc.c
diff --git a/src/arith_yacc.h b/bin/dash/src/arith_yacc.h
index ff34d524..ff34d524 100644
--- a/src/arith_yacc.h
+++ b/bin/dash/src/arith_yacc.h
diff --git a/src/arith_yylex.c b/bin/dash/src/arith_yylex.c
index ec5b5b25..ec5b5b25 100644
--- a/src/arith_yylex.c
+++ b/bin/dash/src/arith_yylex.c
diff --git a/src/bltin/bltin.h b/bin/dash/src/bltin/bltin.h
index f5ac06f2..f5ac06f2 100644
--- a/src/bltin/bltin.h
+++ b/bin/dash/src/bltin/bltin.h
diff --git a/src/bltin/echo.1 b/bin/dash/src/bltin/echo.1
index fbc7fb43..fbc7fb43 100644
--- a/src/bltin/echo.1
+++ b/bin/dash/src/bltin/echo.1
diff --git a/src/bltin/printf.1 b/bin/dash/src/bltin/printf.1
index 38731732..38731732 100644
--- a/src/bltin/printf.1
+++ b/bin/dash/src/bltin/printf.1
diff --git a/src/bltin/printf.c b/bin/dash/src/bltin/printf.c
index 7785735b..7785735b 100644
--- a/src/bltin/printf.c
+++ b/bin/dash/src/bltin/printf.c
diff --git a/src/bltin/test.1 b/bin/dash/src/bltin/test.1
index 42435fb3..42435fb3 100644
--- a/src/bltin/test.1
+++ b/bin/dash/src/bltin/test.1
diff --git a/src/bltin/test.c b/bin/dash/src/bltin/test.c
index c7fc479d..c7fc479d 100644
--- a/src/bltin/test.c
+++ b/bin/dash/src/bltin/test.c
diff --git a/src/bltin/times.c b/bin/dash/src/bltin/times.c
index 1166a68e..1166a68e 100644
--- a/src/bltin/times.c
+++ b/bin/dash/src/bltin/times.c
diff --git a/src/builtins.def.in b/bin/dash/src/builtins.def.in
index 95e420cc..95e420cc 100644
--- a/src/builtins.def.in
+++ b/bin/dash/src/builtins.def.in
diff --git a/src/cd.c b/bin/dash/src/cd.c
index 1ef1dc56..1ef1dc56 100644
--- a/src/cd.c
+++ b/bin/dash/src/cd.c
diff --git a/src/cd.h b/bin/dash/src/cd.h
index 87631619..87631619 100644
--- a/src/cd.h
+++ b/bin/dash/src/cd.h
diff --git a/src/dash.1 b/bin/dash/src/dash.1
index 32f6ac0d..9bc51cd6 100644
--- a/src/dash.1
+++ b/bin/dash/src/dash.1
@@ -32,7 +32,7 @@
 .\"
 .\"	@(#)sh.1	8.6 (Berkeley) 5/4/95
 .\"
-.Dd January 19, 2003
+.Dd December 22, 2020
 .Os
 .Dt DASH 1
 .Sh NAME
@@ -2291,6 +2291,10 @@ The secondary prompt string, which defaults to
 Output before each line when execution trace (set -x) is enabled,
 defaults to
 .Dq +\  .
+.It Ev RPS1
+The primary right prompt string.
+.It Ev RPS2
+The secondary right prompt string.
 .It Ev IFS
 Input Field Separators.
 This is normally set to
diff --git a/src/error.c b/bin/dash/src/error.c
index 728ff885..728ff885 100644
--- a/src/error.c
+++ b/bin/dash/src/error.c
diff --git a/src/error.h b/bin/dash/src/error.h
index 94e30a27..94e30a27 100644
--- a/src/error.h
+++ b/bin/dash/src/error.h
diff --git a/src/eval.c b/bin/dash/src/eval.c
index d4190f95..d4190f95 100644
--- a/src/eval.c
+++ b/bin/dash/src/eval.c
diff --git a/src/eval.h b/bin/dash/src/eval.h
index 63e7d865..63e7d865 100644
--- a/src/eval.h
+++ b/bin/dash/src/eval.h
diff --git a/src/exec.c b/bin/dash/src/exec.c
index 87354d49..87354d49 100644
--- a/src/exec.c
+++ b/bin/dash/src/exec.c
diff --git a/src/exec.h b/bin/dash/src/exec.h
index 423b07e6..423b07e6 100644
--- a/src/exec.h
+++ b/bin/dash/src/exec.h
diff --git a/src/expand.c b/bin/dash/src/expand.c
index 1730670e..1730670e 100644
--- a/src/expand.c
+++ b/bin/dash/src/expand.c
diff --git a/src/expand.h b/bin/dash/src/expand.h
index c44b8481..c44b8481 100644
--- a/src/expand.h
+++ b/bin/dash/src/expand.h
diff --git a/src/funcs/cmv b/bin/dash/src/funcs/cmv
index 91a67c53..91a67c53 100644
--- a/src/funcs/cmv
+++ b/bin/dash/src/funcs/cmv
diff --git a/src/funcs/dirs b/bin/dash/src/funcs/dirs
index 5f6ce635..5f6ce635 100644
--- a/src/funcs/dirs
+++ b/bin/dash/src/funcs/dirs
diff --git a/src/funcs/kill b/bin/dash/src/funcs/kill
index c5df95f5..c5df95f5 100644
--- a/src/funcs/kill
+++ b/bin/dash/src/funcs/kill
diff --git a/src/funcs/login b/bin/dash/src/funcs/login
index 215e5352..215e5352 100644
--- a/src/funcs/login
+++ b/bin/dash/src/funcs/login
diff --git a/src/funcs/newgrp b/bin/dash/src/funcs/newgrp
index ec0e7e5a..ec0e7e5a 100644
--- a/src/funcs/newgrp
+++ b/bin/dash/src/funcs/newgrp
diff --git a/src/funcs/popd b/bin/dash/src/funcs/popd
index 7bccf50d..7bccf50d 100644
--- a/src/funcs/popd
+++ b/bin/dash/src/funcs/popd
diff --git a/src/funcs/pushd b/bin/dash/src/funcs/pushd
index 19ac8e08..19ac8e08 100644
--- a/src/funcs/pushd
+++ b/bin/dash/src/funcs/pushd
diff --git a/src/funcs/suspend b/bin/dash/src/funcs/suspend
index 44844678..44844678 100644
--- a/src/funcs/suspend
+++ b/bin/dash/src/funcs/suspend
diff --git a/src/histedit.c b/bin/dash/src/histedit.c
index f5c90aba..1b7ad238 100644
--- a/src/histedit.c
+++ b/bin/dash/src/histedit.c
@@ -116,6 +116,14 @@ histedit(void)
 				if (hist)
 					el_set(el, EL_HIST, history, hist);
 				el_set(el, EL_PROMPT, getprompt);
+				el_set(el, EL_RPROMPT, getrprompt);
+#ifdef HAVE__EL_FN_SH_COMPLETE
+				el_set(el, EL_ADDFN, "sh-complete", "Filename completion",
+					_el_fn_sh_complete);
+#else
+				el_set(el, EL_ADDFN, "sh-complete", "Filename completion",
+					_el_fn_complete);
+#endif
 			} else {
 bad:
 				out2str("sh: can't initialize editing\n");
@@ -133,6 +141,7 @@ bad:
 			else if (Eflag)
 				el_set(el, EL_EDITOR, "emacs");
 			el_source(el, NULL);
+			el_set(el, EL_BIND, "^I", "sh-complete", NULL);
 		}
 	} else {
 		INTOFF;
@@ -160,6 +169,7 @@ sethistsize(const char *hs)
 		   (histsize = atoi(hs)) < 0)
 			histsize = 100;
 		history(hist, &he, H_SETSIZE, histsize);
+		history(hist, &he, H_SETUNIQUE, 1);
 	}
 }
 
diff --git a/src/init.h b/bin/dash/src/init.h
index d56fb28e..d56fb28e 100644
--- a/src/init.h
+++ b/bin/dash/src/init.h
diff --git a/src/input.c b/bin/dash/src/input.c
index 17544e78..4167bd18 100644
--- a/src/input.c
+++ b/bin/dash/src/input.c
@@ -152,12 +152,8 @@ retry:
 		static const char *rl_cp;
 		static int el_len;
 
-		if (rl_cp == NULL) {
-			struct stackmark smark;
-			pushstackmark(&smark, stackblocksize());
+		if (rl_cp == NULL)
 			rl_cp = el_gets(el, &el_len);
-			popstackmark(&smark);
-		}
 		if (rl_cp == NULL)
 			nr = 0;
 		else {
diff --git a/src/input.h b/bin/dash/src/input.h
index 8acc6e9f..8acc6e9f 100644
--- a/src/input.h
+++ b/bin/dash/src/input.h
diff --git a/src/jobs.c b/bin/dash/src/jobs.c
index f30313be..8fb9d4b2 100644
--- a/src/jobs.c
+++ b/bin/dash/src/jobs.c
@@ -1207,12 +1207,12 @@ stoppedjobs(void)
 	int retval;
 
 	retval = 0;
-	if (job_warning)
+	if (job_warning > 1)
 		goto out;
 	jp = curjob;
 	if (jp && jp->state == JOBSTOPPED) {
 		out2str("You have stopped jobs.\n");
-		job_warning = 2;
+		job_warning++;
 		retval++;
 	}
 
diff --git a/src/jobs.h b/bin/dash/src/jobs.h
index 6ac6c56d..6ac6c56d 100644
--- a/src/jobs.h
+++ b/bin/dash/src/jobs.h
diff --git a/src/machdep.h b/bin/dash/src/machdep.h
index f2ff0ad8..f2ff0ad8 100644
--- a/src/machdep.h
+++ b/bin/dash/src/machdep.h
diff --git a/src/mail.c b/bin/dash/src/mail.c
index 8eacb2d0..8eacb2d0 100644
--- a/src/mail.c
+++ b/bin/dash/src/mail.c
diff --git a/src/mail.h b/bin/dash/src/mail.h
index 3c6b21d2..3c6b21d2 100644
--- a/src/mail.h
+++ b/bin/dash/src/mail.h
diff --git a/src/main.c b/bin/dash/src/main.c
index 7a285346..7a285346 100644
--- a/src/main.c
+++ b/bin/dash/src/main.c
diff --git a/src/main.h b/bin/dash/src/main.h
index 19e49835..19e49835 100644
--- a/src/main.h
+++ b/bin/dash/src/main.h
diff --git a/src/memalloc.c b/bin/dash/src/memalloc.c
index 60637da1..60637da1 100644
--- a/src/memalloc.c
+++ b/bin/dash/src/memalloc.c
diff --git a/src/memalloc.h b/bin/dash/src/memalloc.h
index b9adf764..b9adf764 100644
--- a/src/memalloc.h
+++ b/bin/dash/src/memalloc.h
diff --git a/src/miscbltin.c b/bin/dash/src/miscbltin.c
index 5ccbbcb8..5ccbbcb8 100644
--- a/src/miscbltin.c
+++ b/bin/dash/src/miscbltin.c
diff --git a/src/miscbltin.h b/bin/dash/src/miscbltin.h
index dd9a8d1c..dd9a8d1c 100644
--- a/src/miscbltin.h
+++ b/bin/dash/src/miscbltin.h
diff --git a/src/mkbuiltins b/bin/dash/src/mkbuiltins
index f1f25932..f1f25932 100644
--- a/src/mkbuiltins
+++ b/bin/dash/src/mkbuiltins
diff --git a/src/mkinit.c b/bin/dash/src/mkinit.c
index 9025862e..9025862e 100644
--- a/src/mkinit.c
+++ b/bin/dash/src/mkinit.c
diff --git a/src/mknodes.c b/bin/dash/src/mknodes.c
index 1903a605..1903a605 100644
--- a/src/mknodes.c
+++ b/bin/dash/src/mknodes.c
diff --git a/src/mksignames.c b/bin/dash/src/mksignames.c
index a832eab9..a832eab9 100644
--- a/src/mksignames.c
+++ b/bin/dash/src/mksignames.c
diff --git a/src/mksyntax.c b/bin/dash/src/mksyntax.c
index a23c18ca..a23c18ca 100644
--- a/src/mksyntax.c
+++ b/bin/dash/src/mksyntax.c
diff --git a/src/mktokens b/bin/dash/src/mktokens
index 78055be8..78055be8 100644
--- a/src/mktokens
+++ b/bin/dash/src/mktokens
diff --git a/src/myhistedit.h b/bin/dash/src/myhistedit.h
index 22e5c438..22e5c438 100644
--- a/src/myhistedit.h
+++ b/bin/dash/src/myhistedit.h
diff --git a/src/mystring.c b/bin/dash/src/mystring.c
index de624b89..de624b89 100644
--- a/src/mystring.c
+++ b/bin/dash/src/mystring.c
diff --git a/src/mystring.h b/bin/dash/src/mystring.h
index 083ea98c..083ea98c 100644
--- a/src/mystring.h
+++ b/bin/dash/src/mystring.h
diff --git a/src/nodes.c.pat b/bin/dash/src/nodes.c.pat
index 9125bc73..9125bc73 100644
--- a/src/nodes.c.pat
+++ b/bin/dash/src/nodes.c.pat
diff --git a/src/nodetypes b/bin/dash/src/nodetypes
index ceaf478c..ceaf478c 100644
--- a/src/nodetypes
+++ b/bin/dash/src/nodetypes
diff --git a/src/options.c b/bin/dash/src/options.c
index a46c23b9..a46c23b9 100644
--- a/src/options.c
+++ b/bin/dash/src/options.c
diff --git a/src/options.h b/bin/dash/src/options.h
index 975fe339..975fe339 100644
--- a/src/options.h
+++ b/bin/dash/src/options.h
diff --git a/src/output.c b/bin/dash/src/output.c
index e9ee9b4d..e9ee9b4d 100644
--- a/src/output.c
+++ b/bin/dash/src/output.c
diff --git a/src/output.h b/bin/dash/src/output.h
index c43d4937..c43d4937 100644
--- a/src/output.h
+++ b/bin/dash/src/output.h
diff --git a/src/parser.c b/bin/dash/src/parser.c
index a47022e0..499f7f8e 100644
--- a/src/parser.c
+++ b/bin/dash/src/parser.c
@@ -107,6 +107,10 @@ struct heredoc *heredoc;
 int quoteflag;			/* set if (part of) last token was quoted */
 
 
+static char *promptcache;
+static char *rpromptcache;
+
+
 STATIC union node *list(int);
 STATIC union node *andor(void);
 STATIC union node *pipeline(void);
@@ -1541,27 +1545,6 @@ synerror(const char *msg)
 	/* NOTREACHED */
 }
 
-STATIC void
-setprompt(int which)
-{
-	struct stackmark smark;
-	int show;
-
-	needprompt = 0;
-	whichprompt = which;
-
-#ifdef SMALL
-	show = 1;
-#else
-	show = !el;
-#endif
-	if (show) {
-		pushstackmark(&smark, stackblocksize());
-		out2str(getprompt(NULL));
-		popstackmark(&smark);
-	}
-}
-
 const char *
 expandstr(const char *ps)
 {
@@ -1611,31 +1594,78 @@ out:
 	return result;
 }
 
-/*
- * called by editline -- any expansions to the prompt
- *    should be added here.
- */
-const char *
-getprompt(void *unused)
+STATIC void
+setprompt(int which)
 {
-	const char *prompt;
+	struct stackmark smark;
+	const char *prompt, *rprompt, *nl;
+	int show;
+
+	needprompt = 0;
+	whichprompt = which;
 
 	switch (whichprompt) {
 	default:
 #ifdef DEBUG
-		return "<internal prompt error>";
+		prompt = "<internal prompt error>";
+		rprompt = prompt;
+		break;
 #endif
 	case 0:
-		return nullstr;
+		prompt = nullstr;
+		rprompt = nullstr;
+		break;
 	case 1:
 		prompt = ps1val();
+		rprompt = rps1val();
 		break;
 	case 2:
 		prompt = ps2val();
+		rprompt = rps2val();
 		break;
 	}
 
-	return expandstr(prompt);
+#ifdef SMALL
+	show = 1;
+#else
+	show = !el;
+#endif
+	pushstackmark(&smark, stackblocksize());
+	if (show) {
+		out2str(expandstr(prompt));
+	} else {
+		free(promptcache);
+		free(rpromptcache);
+		promptcache = savestr(expandstr(prompt));
+		rpromptcache = savestr(expandstr(rprompt));
+
+		nl = strrchr(promptcache, '\n');
+		if (nl)
+			outmem(promptcache, &nl[1] - promptcache, out2);
+	}
+	popstackmark(&smark);
+}
+
+/*
+ * called by editline -- return the cached prompt expansion.
+ */
+const char *
+getprompt(void *unused)
+{
+	const char *nl;
+
+	nl = strrchr(promptcache, '\n');
+
+	if (nl)
+		return &nl[1];
+	else
+		return promptcache;
+}
+
+const char *
+getrprompt(void *unused)
+{
+	return rpromptcache;
 }
 
 const char *const *
diff --git a/src/parser.h b/bin/dash/src/parser.h
index 524ac1c7..6597faa8 100644
--- a/src/parser.h
+++ b/bin/dash/src/parser.h
@@ -86,6 +86,7 @@ int isassignment(const char *p);
 union node *parsecmd(int);
 void fixredir(union node *, const char *, int);
 const char *getprompt(void *);
+const char *getrprompt(void *);
 const char *const *findkwd(const char *);
 char *endofname(const char *);
 const char *expandstr(const char *);
diff --git a/src/redir.c b/bin/dash/src/redir.c
index 895140c3..895140c3 100644
--- a/src/redir.c
+++ b/bin/dash/src/redir.c
diff --git a/src/redir.h b/bin/dash/src/redir.h
index 1cf27616..1cf27616 100644
--- a/src/redir.h
+++ b/bin/dash/src/redir.h
diff --git a/src/shell.h b/bin/dash/src/shell.h
index 98edc8be..98edc8be 100644
--- a/src/shell.h
+++ b/bin/dash/src/shell.h
diff --git a/src/show.c b/bin/dash/src/show.c
index 4a049e93..4a049e93 100644
--- a/src/show.c
+++ b/bin/dash/src/show.c
diff --git a/src/show.h b/bin/dash/src/show.h
index d0ccac79..d0ccac79 100644
--- a/src/show.h
+++ b/bin/dash/src/show.h
diff --git a/src/system.c b/bin/dash/src/system.c
index 844a6410..844a6410 100644
--- a/src/system.c
+++ b/bin/dash/src/system.c
diff --git a/src/system.h b/bin/dash/src/system.h
index 007952c5..007952c5 100644
--- a/src/system.h
+++ b/bin/dash/src/system.h
diff --git a/src/trap.c b/bin/dash/src/trap.c
index cd84814f..cd84814f 100644
--- a/src/trap.c
+++ b/bin/dash/src/trap.c
diff --git a/src/trap.h b/bin/dash/src/trap.h
index beaf6605..beaf6605 100644
--- a/src/trap.h
+++ b/bin/dash/src/trap.h
diff --git a/src/var.c b/bin/dash/src/var.c
index ef9c2bde..ca9504ef 100644
--- a/src/var.c
+++ b/bin/dash/src/var.c
@@ -93,6 +93,8 @@ struct var varinit[] = {
 	{ 0,	VSTRFIXED|VTEXTFIXED,		"PS1=$ ",	0 },
 	{ 0,	VSTRFIXED|VTEXTFIXED,		"PS2=> ",	0 },
 	{ 0,	VSTRFIXED|VTEXTFIXED,		"PS4=+ ",	0 },
+	{ 0,	VSTRFIXED|VTEXTFIXED|VUNSET,	"RPS1\0",	0 },
+	{ 0,	VSTRFIXED|VTEXTFIXED|VUNSET,	"RPS2\0",	0 },
 	{ 0,	VSTRFIXED|VTEXTFIXED,		defoptindvar,	getoptsreset },
 #ifdef WITH_LINENO
 	{ 0,	VSTRFIXED|VTEXTFIXED,		linenovar,	0 },
diff --git a/src/var.h b/bin/dash/src/var.h
index aa7575a7..1d1d87a5 100644
--- a/src/var.h
+++ b/bin/dash/src/var.h
@@ -87,7 +87,9 @@ extern struct var varinit[];
 #define vps1 (&vpath)[1]
 #define vps2 (&vps1)[1]
 #define vps4 (&vps2)[1]
-#define voptind (&vps4)[1]
+#define vrps1 (&vps4)[1]
+#define vrps2 (&vrps1)[1]
+#define voptind (&vrps2)[1]
 #ifdef WITH_LINENO
 #define vlineno (&voptind)[1]
 #endif
@@ -122,6 +124,8 @@ extern char linenovar[];
 #define ps1val()	(vps1.text + 4)
 #define ps2val()	(vps2.text + 4)
 #define ps4val()	(vps4.text + 4)
+#define rps1val()	(vrps1.text + 5)
+#define rps2val()	(vrps2.text + 5)
 #define optindval()	(voptind.text + 7)
 #define linenoval()	(vlineno.text + 7)
 #ifndef SMALL
diff --git a/bin/dtch.c b/bin/dtch.c
new file mode 100644
index 00000000..2aea53ae
--- /dev/null
+++ b/bin/dtch.c
@@ -0,0 +1,271 @@
+/* Copyright (C) 2017-2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/un.h>
+#include <sys/wait.h>
+#include <sysexits.h>
+#include <termios.h>
+#include <unistd.h>
+
+#if defined __FreeBSD__
+#include <libutil.h>
+#elif defined __linux__
+#include <pty.h>
+#else
+#include <util.h>
+#endif
+
+static char _;
+static struct iovec iov = { .iov_base = &_, .iov_len = 1 };
+
+static ssize_t sendfd(int sock, int fd) {
+	size_t len = CMSG_SPACE(sizeof(int));
+	char buf[len];
+	struct msghdr msg = {
+		.msg_iov = &iov,
+		.msg_iovlen = 1,
+		.msg_control = buf,
+		.msg_controllen = len,
+	};
+
+	struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
+	cmsg->cmsg_len = CMSG_LEN(sizeof(int));
+	cmsg->cmsg_level = SOL_SOCKET;
+	cmsg->cmsg_type = SCM_RIGHTS;
+	*(int *)CMSG_DATA(cmsg) = fd;
+
+	return sendmsg(sock, &msg, 0);
+}
+
+static int recvfd(int sock) {
+	size_t len = CMSG_SPACE(sizeof(int));
+	char buf[len];
+	struct msghdr msg = {
+		.msg_iov = &iov,
+		.msg_iovlen = 1,
+		.msg_control = buf,
+		.msg_controllen = len,
+	};
+	if (0 > recvmsg(sock, &msg, 0)) return -1;
+
+	struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
+	if (!cmsg || cmsg->cmsg_type != SCM_RIGHTS) {
+		errno = ENOMSG;
+		return -1;
+	}
+	return *(int *)CMSG_DATA(cmsg);
+}
+
+static struct sockaddr_un addr = { .sun_family = AF_UNIX };
+
+static void handler(int sig) {
+	unlink(addr.sun_path);
+	_exit(-sig);
+}
+
+static void detach(int server, bool sink, char *argv[]) {
+	int pty;
+	pid_t pid = forkpty(&pty, NULL, NULL, NULL);
+	if (pid < 0) err(EX_OSERR, "forkpty");
+
+	if (!pid) {
+		execvp(argv[0], argv);
+		err(EX_NOINPUT, "%s", argv[0]);
+	}
+
+	signal(SIGINT, handler);
+	signal(SIGTERM, handler);
+
+	int error = listen(server, 0);
+	if (error) err(EX_OSERR, "listen");
+
+	struct pollfd fds[] = {
+		{ .events = POLLIN, .fd = server },
+		{ .events = POLLIN, .fd = pty },
+	};
+	while (0 < poll(fds, (sink ? 2 : 1), -1)) {
+		if (fds[0].revents) {
+			int client = accept(server, NULL, NULL);
+			if (client < 0) err(EX_IOERR, "accept");
+
+			ssize_t len = sendfd(client, pty);
+			if (len < 0) warn("sendfd");
+
+			len = recv(client, &_, sizeof(_), 0);
+			if (len < 0) warn("recv");
+
+			close(client);
+		}
+
+		if (fds[1].revents) {
+			char buf[4096];
+			ssize_t len = read(pty, buf, sizeof(buf));
+			if (len < 0) err(EX_IOERR, "read");
+		}
+
+		int status;
+		pid_t dead = waitpid(pid, &status, WNOHANG);
+		if (dead < 0) err(EX_OSERR, "waitpid");
+		if (dead) {
+			unlink(addr.sun_path);
+			exit(WIFEXITED(status) ? WEXITSTATUS(status) : -WTERMSIG(status));
+		}
+	}
+	err(EX_IOERR, "poll");
+}
+
+static struct termios saveTerm;
+static void restoreTerm(void) {
+	tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm);
+	fprintf(stderr, "\33c"); // RIS
+	warnx("detached");
+}
+
+static void nop(int sig) {
+	(void)sig;
+}
+
+static void attach(int client) {
+	int error;
+
+	int pty = recvfd(client);
+	if (pty < 0) err(EX_IOERR, "recvfd");
+	warnx("attached");
+
+	struct winsize window;
+	error = ioctl(STDIN_FILENO, TIOCGWINSZ, &window);
+	if (error) err(EX_IOERR, "ioctl");
+
+	struct winsize redraw = { .ws_row = 1, .ws_col = 1 };
+	error = ioctl(pty, TIOCSWINSZ, &redraw);
+	if (error) err(EX_IOERR, "ioctl");
+
+	error = ioctl(pty, TIOCSWINSZ, &window);
+	if (error) err(EX_IOERR, "ioctl");
+
+	error = tcgetattr(STDIN_FILENO, &saveTerm);
+	if (error) err(EX_IOERR, "tcgetattr");
+	atexit(restoreTerm);
+
+	struct termios raw = saveTerm;
+	cfmakeraw(&raw);
+	error = tcsetattr(STDIN_FILENO, TCSADRAIN, &raw);
+	if (error) err(EX_IOERR, "tcsetattr");
+
+	signal(SIGWINCH, nop);
+
+	char buf[4096];
+	struct pollfd fds[] = {
+		{ .events = POLLIN, .fd = STDIN_FILENO },
+		{ .events = POLLIN, .fd = pty },
+	};
+	for (;;) {
+		int nfds = poll(fds, 2, -1);
+		if (nfds < 0) {
+			if (errno != EINTR) err(EX_IOERR, "poll");
+
+			error = ioctl(STDIN_FILENO, TIOCGWINSZ, &window);
+			if (error) err(EX_IOERR, "ioctl");
+
+			error = ioctl(pty, TIOCSWINSZ, &window);
+			if (error) err(EX_IOERR, "ioctl");
+
+			continue;
+		}
+
+		if (fds[0].revents) {
+			ssize_t len = read(STDIN_FILENO, buf, sizeof(buf));
+			if (len < 0) err(EX_IOERR, "read");
+			if (!len) break;
+
+			if (len == 1 && buf[0] == CTRL('Q')) break;
+
+			len = write(pty, buf, len);
+			if (len < 0) err(EX_IOERR, "write");
+		}
+
+		if (fds[1].revents) {
+			ssize_t len = read(pty, buf, sizeof(buf));
+			if (len < 0) err(EX_IOERR, "read");
+			if (!len) break;
+
+			len = write(STDOUT_FILENO, buf, len);
+			if (len < 0) err(EX_IOERR, "write");
+		}
+	}
+}
+
+int main(int argc, char *argv[]) {
+	int error;
+
+	bool atch = false;
+	bool sink = false;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "as"))) {
+		switch (opt) {
+			break; case 'a': atch = true;
+			break; case 's': sink = true;
+			break; default:  return EX_USAGE;
+		}
+	}
+	if (optind == argc) errx(EX_USAGE, "no session name");
+	const char *name = argv[optind++];
+
+	if (optind == argc) {
+		argv[--optind] = getenv("SHELL");
+		if (!argv[optind]) errx(EX_CONFIG, "SHELL unset");
+	}
+
+	const char *home = getenv("HOME");
+	if (!home) errx(EX_CONFIG, "HOME unset");
+
+	int fd = open(home, 0);
+	if (fd < 0) err(EX_CANTCREAT, "%s", home);
+
+	error = mkdirat(fd, ".dtch", 0700);
+	if (error && errno != EEXIST) err(EX_CANTCREAT, "%s/.dtch", home);
+
+	close(fd);
+
+	int sock = socket(PF_UNIX, SOCK_STREAM, 0);
+	if (sock < 0) err(EX_OSERR, "socket");
+	fcntl(sock, F_SETFD, FD_CLOEXEC);
+
+	snprintf(addr.sun_path, sizeof(addr.sun_path), "%s/.dtch/%s", home, name);
+
+	if (atch) {
+		error = connect(sock, (struct sockaddr *)&addr, SUN_LEN(&addr));
+		if (error) err(EX_NOINPUT, "%s", addr.sun_path);
+		attach(sock);
+	} else {
+		error = bind(sock, (struct sockaddr *)&addr, SUN_LEN(&addr));
+		if (error) err(EX_CANTCREAT, "%s", addr.sun_path);
+		detach(sock, sink, &argv[optind]);
+	}
+}
diff --git a/bin/ever.c b/bin/ever.c
new file mode 100644
index 00000000..f983912b
--- /dev/null
+++ b/bin/ever.c
@@ -0,0 +1,119 @@
+/* Copyright (C) 2017  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <sys/event.h>
+#include <sys/wait.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+static int watch(int kq, char *path) {
+	int fd = open(path, O_CLOEXEC);
+	if (fd < 0) err(EX_NOINPUT, "%s", path);
+
+	struct kevent event;
+	EV_SET(
+		&event,
+		fd,
+		EVFILT_VNODE,
+		EV_ADD | EV_CLEAR,
+		NOTE_WRITE | NOTE_DELETE,
+		0,
+		path
+	);
+	int nevents = kevent(kq, &event, 1, NULL, 0, NULL);
+	if (nevents < 0) err(EX_OSERR, "kevent");
+
+	return fd;
+}
+
+static bool quiet;
+static void exec(int fd, char *const argv[]) {
+	pid_t pid = fork();
+	if (pid < 0) err(EX_OSERR, "fork");
+
+	if (!pid) {
+		dup2(fd, STDIN_FILENO);
+		execvp(*argv, argv);
+		err(EX_NOINPUT, "%s", *argv);
+	}
+
+	int status;
+	pid = wait(&status);
+	if (pid < 0) err(EX_OSERR, "wait");
+
+	if (quiet) return;
+	if (WIFEXITED(status)) {
+		warnx("exit %d\n", WEXITSTATUS(status));
+	} else if (WIFSIGNALED(status)) {
+		warnx("signal %d\n", WTERMSIG(status));
+	} else {
+		warnx("status %d\n", status);
+	}
+}
+
+int main(int argc, char *argv[]) {
+	bool input = false;
+
+	for (int opt; 0 < (opt = getopt(argc, argv, "iq"));) {
+		switch (opt) {
+			break; case 'i': input = true;
+			break; case 'q': quiet = true;
+			break; default:  return EX_USAGE;
+		}
+	}
+	argc -= optind;
+	argv += optind;
+	if (argc < 2) return EX_USAGE;
+
+	int kq = kqueue();
+	if (kq < 0) err(EX_OSERR, "kqueue");
+
+	int i;
+	for (i = 0; i < argc - 1; ++i) {
+		if (argv[i][0] == '-') {
+			i++;
+			break;
+		}
+		watch(kq, argv[i]);
+	}
+
+	if (!input) {
+		exec(STDIN_FILENO, &argv[i]);
+	}
+
+	for (;;) {
+		struct kevent event;
+		int nevents = kevent(kq, NULL, 0, &event, 1, NULL);
+		if (nevents < 0) err(EX_OSERR, "kevent");
+
+		if (event.fflags & NOTE_DELETE) {
+			close(event.ident);
+			sleep(1);
+			event.ident = watch(kq, (char *)event.udata);
+		} else if (input) {
+			off_t off = lseek(event.ident, 0, SEEK_SET);
+			if (off < 0) err(EX_IOERR, "lseek");
+		}
+
+		exec((input ? event.ident : STDIN_FILENO), &argv[i]);
+	}
+}
diff --git a/bin/fbatt.c b/bin/fbatt.c
new file mode 100644
index 00000000..9feffe47
--- /dev/null
+++ b/bin/fbatt.c
@@ -0,0 +1,123 @@
+/* Copyright (C) 2018  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/fb.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#include "scheme.h"
+
+static const char *Class = "/sys/class/power_supply";
+
+static const uint32_t Right  = 5 * 8 + 1; // fbclock width.
+static const uint32_t Width  = 8;
+static const uint32_t Height = 16;
+
+int main() {
+	int error;
+
+	DIR *dir = opendir(Class);
+	if (!dir) err(EX_OSFILE, "%s", Class);
+
+	FILE *chargeFull = NULL;
+	FILE *chargeNow = NULL;
+
+	const struct dirent *entry;
+	while (NULL != (errno = 0, entry = readdir(dir))) {
+		if (entry->d_name[0] == '.') continue;
+
+		error = chdir(Class);
+		if (error) err(EX_OSFILE, "%s", Class);
+
+		error = chdir(entry->d_name);
+		if (error) err(EX_OSFILE, "%s/%s", Class, entry->d_name);
+
+		chargeFull = fopen("charge_full", "r");
+		chargeNow = fopen("charge_now", "r");
+		if (chargeFull && chargeNow) break;
+	}
+	if (!chargeFull || !chargeNow) {
+		if (errno) err(EX_OSFILE, "%s", Class);
+		errx(EX_CONFIG, "%s: empty", Class);
+	}
+	closedir(dir);
+
+	const char *path = getenv("FRAMEBUFFER");
+	if (!path) path = "/dev/fb0";
+
+	int fb = open(path, O_RDWR);
+	if (fb < 0) err(EX_OSFILE, "%s", path);
+
+	struct fb_var_screeninfo info;
+	error = ioctl(fb, FBIOGET_VSCREENINFO, &info);
+	if (error) err(EX_IOERR, "%s", path);
+
+	size_t size = 4 * info.xres * info.yres;
+	uint32_t *buf = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fb, 0);
+	if (buf == MAP_FAILED) err(EX_IOERR, "%s", path);
+
+	for (;;) {
+		int match;
+
+		rewind(chargeFull);
+		fflush(chargeFull);
+		uint32_t full;
+		match = fscanf(chargeFull, "%u", &full);
+		if (match == EOF) err(EX_IOERR, "charge_full");
+		if (match < 1) errx(EX_DATAERR, "charge_full");
+
+		rewind(chargeNow);
+		fflush(chargeNow);
+		uint32_t now;
+		match = fscanf(chargeNow, "%u", &now);
+		if (match == EOF) err(EX_IOERR, "charge_now");
+		if (match < 1) errx(EX_DATAERR, "charge_now");
+
+		uint32_t percent = 100 * now / full;
+		uint32_t height = 16 * now / full;
+
+		for (int i = 0; i < 60; ++i, sleep(1)) {
+			uint32_t left = info.xres - Right - Width;
+
+			for (uint32_t y = 0; y <= Height; ++y) {
+				buf[y * info.xres + left - 1] = DarkWhite;
+				buf[y * info.xres + left + Width] = DarkWhite;
+			}
+			for (uint32_t x = left; x < left + Width; ++x) {
+				buf[Height * info.xres + x] = DarkWhite;
+			}
+
+			for (uint32_t y = 0; y < Height; ++y) {
+				for (uint32_t x = left; x < left + Width; ++x) {
+					buf[y * info.xres + x] =
+						(Height - 1 - y > height) ? DarkBlack
+						: (percent <= 10) ? DarkRed
+						: (percent <= 30) ? DarkYellow
+						: LightBlack;
+				}
+			}
+		}
+	}
+}
diff --git a/bin/fbclock.c b/bin/fbclock.c
new file mode 100644
index 00000000..ddc32db6
--- /dev/null
+++ b/bin/fbclock.c
@@ -0,0 +1,132 @@
+/* Copyright (C) 2018  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <err.h>
+#include <fcntl.h>
+#include <linux/fb.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sysexits.h>
+#include <time.h>
+#include <unistd.h>
+#include <zlib.h>
+
+#include "scheme.h"
+
+static const uint32_t PSF2Magic = 0x864AB572;
+struct PSF2Header {
+	uint32_t magic;
+	uint32_t version;
+	uint32_t headerSize;
+	uint32_t flags;
+	uint32_t glyphCount;
+	uint32_t glyphSize;
+	uint32_t glyphHeight;
+	uint32_t glyphWidth;
+};
+
+int main() {
+	size_t len;
+
+	const char *fontPath = getenv("FONT");
+	if (!fontPath) {
+		fontPath = "/usr/share/kbd/consolefonts/Lat2-Terminus16.psfu.gz";
+	}
+
+	gzFile font = gzopen(fontPath, "r");
+	if (!font) err(EX_NOINPUT, "%s", fontPath);
+
+	struct PSF2Header header;
+	len = gzfread(&header, sizeof(header), 1, font);
+	if (!len && gzeof(font)) errx(EX_DATAERR, "%s: missing header", fontPath);
+	if (!len) errx(EX_IOERR, "%s", gzerror(font, NULL));
+
+	if (header.magic != PSF2Magic) {
+		errx(
+			EX_DATAERR, "%s: invalid header magic %08X",
+			fontPath, header.magic
+		);
+	}
+	if (header.headerSize != sizeof(struct PSF2Header)) {
+		errx(
+			EX_DATAERR, "%s: weird header size %d",
+			fontPath, header.headerSize
+		);
+	}
+
+	uint8_t glyphs[128][header.glyphSize];
+	len = gzfread(glyphs, header.glyphSize, 128, font);
+	if (!len && gzeof(font)) errx(EX_DATAERR, "%s: missing glyphs", fontPath);
+	if (!len) errx(EX_IOERR, "%s", gzerror(font, NULL));
+
+	gzclose(font);
+
+	const char *fbPath = getenv("FRAMEBUFFER");
+	if (!fbPath) fbPath = "/dev/fb0";
+
+	int fb = open(fbPath, O_RDWR);
+	if (fb < 0) err(EX_OSFILE, "%s", fbPath);
+
+	struct fb_var_screeninfo info;
+	int error = ioctl(fb, FBIOGET_VSCREENINFO, &info);
+	if (error) err(EX_IOERR, "%s", fbPath);
+
+	size_t size = 4 * info.xres * info.yres;
+	uint32_t *buf = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fb, 0);
+	if (buf == MAP_FAILED) err(EX_IOERR, "%s", fbPath);
+
+	for (;;) {
+		time_t t = time(NULL);
+		if (t < 0) err(EX_OSERR, "time");
+		const struct tm *local = localtime(&t);
+		if (!local) err(EX_OSERR, "localtime");
+
+		char str[64];
+		len = strftime(str, sizeof(str), "%H:%M", local);
+		assert(len);
+
+		for (int i = 0; i < (60 - local->tm_sec); ++i, sleep(1)) {
+			uint32_t left = info.xres - header.glyphWidth * len;
+			uint32_t bottom = header.glyphHeight;
+
+			for (uint32_t y = 0; y < bottom; ++y) {
+				buf[y * info.xres + left - 1] = DarkWhite;
+			}
+			for (uint32_t x = left - 1; x < info.xres; ++x) {
+				buf[bottom * info.xres + x] = DarkWhite;
+			}
+
+			for (const char *s = str; *s; ++s) {
+				const uint8_t *glyph = glyphs[(unsigned)*s];
+				uint32_t stride = header.glyphSize / header.glyphHeight;
+				for (uint32_t y = 0; y < header.glyphHeight; ++y) {
+					for (uint32_t x = 0; x < header.glyphWidth; ++x) {
+						uint8_t bits = glyph[y * stride + x / 8];
+						uint8_t bit = bits >> (7 - x % 8) & 1;
+						buf[y * info.xres + left + x] = bit
+							? DarkWhite
+							: DarkBlack;
+					}
+				}
+				left += header.glyphWidth;
+			}
+		}
+	}
+}
diff --git a/bin/freecell.c b/bin/freecell.c
new file mode 100644
index 00000000..11bed1c0
--- /dev/null
+++ b/bin/freecell.c
@@ -0,0 +1,388 @@
+/* Copyright (C) 2019, 2021  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <ctype.h>
+#include <curses.h>
+#include <err.h>
+#include <locale.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sysexits.h>
+#include <time.h>
+#include <unistd.h>
+
+typedef unsigned uint;
+typedef unsigned char byte;
+
+typedef byte Card;
+enum {
+	A = 1,
+	J = 11,
+	Q = 12,
+	K = 13,
+	Rank = 0x0F,
+	Suit = 0x30,
+	Color = 0x10,
+	Club = 0x00,
+	Diamond = 0x10,
+	Spade = 0x20,
+	Heart = 0x30,
+};
+
+enum { StackCap = 52 };
+struct Stack {
+	byte len;
+	Card cards[StackCap];
+};
+static void push(struct Stack *stack, Card card) {
+	assert(stack->len < StackCap);
+	stack->cards[stack->len++] = card;
+}
+static Card pop(struct Stack *stack) {
+	if (!stack->len) return 0;
+	return stack->cards[--stack->len];
+}
+static Card peek(struct Stack *stack) {
+	if (!stack->len) return 0;
+	return stack->cards[stack->len-1];
+}
+
+enum {
+	Foundation,
+	Cell = Foundation + 4,
+	Tableau = Cell + 4,
+	Stacks = Tableau + 8,
+};
+static struct Stack stacks[Stacks];
+
+struct Move {
+	byte dst;
+	byte src;
+};
+
+enum { QCap = 16 };
+static struct {
+	struct Move moves[QCap];
+	uint r, w, u;
+} q;
+static void enq(byte dst, byte src) {
+	q.moves[q.w % QCap].dst = dst;
+	q.moves[q.w % QCap].src = src;
+	q.w++;
+}
+static void deq(void) {
+	struct Move move = q.moves[q.r++ % QCap];
+	push(&stacks[move.dst], pop(&stacks[move.src]));
+}
+static void undo(void) {
+	uint len = q.w - q.u;
+	if (!len || len > QCap) return;
+	for (uint i = len-1; i < len; --i) {
+		struct Move move = q.moves[(q.u+i) % QCap];
+		push(&stacks[move.src], pop(&stacks[move.dst]));
+	}
+	q.r = q.w = q.u;
+}
+
+// https://rosettacode.org/wiki/Deal_cards_for_FreeCell
+static uint lcgState;
+static uint lcg(void) {
+	lcgState = (214013 * lcgState + 2531011) % (1 << 31);
+	return lcgState >> 16;
+}
+static void deal(uint game) {
+	lcgState = game;
+	struct Stack deck = {0};
+	for (Card i = A; i <= K; ++i) {
+		push(&deck, Club | i);
+		push(&deck, Diamond | i);
+		push(&deck, Heart | i);
+		push(&deck, Spade | i);
+	}
+	for (uint stack = 0; deck.len; ++stack) {
+		uint i = lcg() % deck.len;
+		Card card = deck.cards[i];
+		deck.cards[i] = deck.cards[--deck.len];
+		push(&stacks[Tableau + stack%8], card);
+	}
+}
+
+static bool win(void) {
+	for (uint i = Foundation; i < Cell; ++i) {
+		if (stacks[i].len != 13) return false;
+	}
+	return true;
+}
+
+static bool valid(uint dst, Card card) {
+	Card top = peek(&stacks[dst]);
+	if (dst < Cell) {
+		if (!top) return (card & Rank) == A;
+		return (card & Suit) == (top & Suit)
+			&& (card & Rank) == (top & Rank) + 1;
+	}
+	if (!top) return true;
+	if (dst >= Tableau) {
+		return (card & Color) != (top & Color)
+			&& (card & Rank) == (top & Rank) - 1;
+	}
+	return false;
+}
+
+static void autoEnq(void) {
+	Card min[] = { K, K };
+	for (uint i = Cell; i < Stacks; ++i) {
+		for (uint j = 0; j < stacks[i].len; ++j) {
+			Card card = stacks[i].cards[j];
+			if ((card & Rank) < min[!!(card & Color)]) {
+				min[!!(card & Color)] = card & Rank;
+			}
+		}
+	}
+	for (uint src = Cell; src < Stacks; ++src) {
+		Card card = peek(&stacks[src]);
+		if (!card) continue;
+		if (min[!(card & Color)] < (card & Rank)-1) continue;
+		for (uint dst = Foundation; dst < Cell; ++dst) {
+			if (valid(dst, card)) {
+				enq(dst, src);
+				return;
+			}
+		}
+	}
+}
+
+static void moveSingle(uint dst, uint src) {
+	if (!valid(dst, peek(&stacks[src]))) return;
+	q.u = q.w;
+	enq(dst, src);
+}
+
+static uint freeCells(uint cells[static 4]) {
+	uint len = 0;
+	for (uint i = Cell; i < Tableau; ++i) {
+		if (!stacks[i].len) cells[len++] = i;
+	}
+	return len;
+}
+
+static uint moveDepth(uint src) {
+	struct Stack stack = stacks[src];
+	if (stack.len < 2) return stack.len;
+	uint n = 1;
+	for (uint i = stack.len-2; i < stack.len; --i, ++n) {
+		if ((stack.cards[i] & Color) == (stack.cards[i+1] & Color)) break;
+		if ((stack.cards[i] & Rank) != (stack.cards[i+1] & Rank) + 1) break;
+	}
+	return n;
+}
+
+static void moveColumn(uint dst, uint src) {
+	uint depth;
+	uint cells[4];
+	uint free = freeCells(cells);
+	for (depth = moveDepth(src); depth; --depth) {
+		if (free < depth-1) continue;
+		if (valid(dst, stacks[src].cards[stacks[src].len-depth])) break;
+	}
+	if (depth < 2 || dst < Tableau) {
+		moveSingle(dst, src);
+		return;
+	}
+	q.u = q.w;
+	for (uint i = 0; i < depth-1; ++i) {
+		enq(cells[i], src);
+	}
+	enq(dst, src);
+	for (uint i = depth-2; i < depth-1; --i) {
+		enq(dst, cells[i]);
+	}
+}
+
+static void curse(void) {
+	setlocale(LC_CTYPE, "");
+	initscr();
+	cbreak();
+	noecho();
+	curs_set(0);
+	start_color();
+	use_default_colors();
+	init_pair(1, COLOR_BLACK, COLOR_WHITE);
+	init_pair(2, COLOR_RED, COLOR_WHITE);
+	init_pair(3, COLOR_GREEN, -1);
+}
+
+static void drawCard(bool hi, int y, int x, Card card) {
+	if (!card) return;
+	move(y, x);
+	attr_set(hi ? A_REVERSE : A_NORMAL, (card & Color) ? 2 : 1, NULL);
+	switch (card & Suit) {
+		break; case Club: addstr("\u2663");
+		break; case Diamond: addstr("\u2666");
+		break; case Spade: addstr("\u2660");
+		break; case Heart: addstr("\u2665");
+		break; default:;
+	}
+	switch (card & Rank) {
+		break; case A: addstr(" A");
+		break; case 10: addstr("10");
+		break; case J: addstr(" J");
+		break; case Q: addstr(" Q");
+		break; case K: addstr(" K");
+		break; default: {
+			addch(' ');
+			addch('0' + (card & Rank));
+		}
+	}
+	attr_set(A_NORMAL, 0, NULL);
+}
+
+static void drawStack(bool hi, int y, int x, const struct Stack *stack) {
+	for (uint i = 0; i < stack->len; ++i) {
+		drawCard(hi && i == stack->len-1, y++, x, stack->cards[i]);
+	}
+}
+
+enum {
+	Padding = 1,
+	CardWidth = 3,
+	CardHeight = 1,
+	CellX = Padding,
+	CellY = 2*CardHeight,
+	FoundationX = CellX + 4*(CardWidth+Padding),
+	FoundationY = CellY,
+	TableauX = CellX,
+	TableauY = CellY + 2*CardHeight,
+};
+
+static uint game;
+static uint srcStack = Stacks;
+
+static void draw(void) {
+	erase();
+	static char buf[256];
+	if (!buf[0]) snprintf(buf, sizeof(buf), "Game #%u", game);
+	attr_set(A_NORMAL, 3, NULL);
+	mvaddstr(0, Padding, buf);
+	for (uint i = 0; i < Stacks; ++i) {
+		int y, x;
+		char key;
+		if (i < Cell) {
+			y = FoundationY;
+			x = FoundationX + (3-(i-Foundation)) * (CardWidth+Padding);
+			key = '_';
+		} else if (i < Tableau) {
+			y = CellY;
+			x = CellX + (i-Cell) * (CardWidth+Padding);
+			key = '1' + i-Cell;
+		} else {
+			y = TableauY;
+			x = TableauX + (i-Tableau) * (CardWidth+Padding);
+			key = "QWERASDF"[i-Tableau];
+		}
+		if (i < Tableau) {
+			mvaddch(y, x+1, COLOR_PAIR(3) | key);
+		} else {
+			mvaddch(y + 8*CardHeight, x+1, COLOR_PAIR(3) | key);
+		}
+		if (i < Cell) {
+			drawCard(false, y, x, peek(&stacks[i]));
+		} else {
+			drawStack(i == srcStack, y, x, &stacks[i]);
+		}
+	}
+}
+
+static void input(void) {
+	char ch = getch();
+	uint stack = Stacks;
+	switch (tolower(ch)) {
+		break; case '\33': srcStack = Stacks;
+		break; case 'u': case '\b': case '\177': undo();
+		break; case '1': case '!': stack = Cell+0;
+		break; case '2': case '@': stack = Cell+1;
+		break; case '3': case '#': stack = Cell+2;
+		break; case '4': case '$': stack = Cell+3;
+		break; case '_': case ' ': stack = Foundation;
+		break; case 'q': stack = Tableau+0;
+		break; case 'w': stack = Tableau+1;
+		break; case 'e': stack = Tableau+2;
+		break; case 'r': stack = Tableau+3;
+		break; case 'a': stack = Tableau+4;
+		break; case 's': stack = Tableau+5;
+		break; case 'd': stack = Tableau+6;
+		break; case 'f': stack = Tableau+7;
+	}
+	if (stack == Stacks) return;
+
+	if (srcStack < Stacks) {
+		Card card = peek(&stacks[srcStack]);
+		if (stack == Foundation) {
+			for (; stack < Cell; ++stack) {
+				if (valid(stack, card)) break;
+			}
+			if (stack == Cell) return;
+		}
+		if (stack == srcStack) {
+			for (stack = Cell; stack < Stacks; ++stack) {
+				if (!stacks[stack].len) break;
+			}
+			if (stack == Stacks) return;
+		}
+		if (isupper(ch)) {
+			moveSingle(stack, srcStack);
+		} else {
+			moveColumn(stack, srcStack);
+		}
+		srcStack = Stacks;
+
+	} else if (stack >= Cell && stacks[stack].len) {
+		srcStack = stack;
+	}
+}
+
+static void status(void) {
+	printf("Game #%u %s!\n", game, win() ? "win" : "lose");
+}
+
+int main(int argc, char *argv[]) {
+	game = 1 + time(NULL) % 32000;
+	uint delay = 50;
+	for (int opt; 0 < (opt = getopt(argc, argv, "d:n:"));) {
+		switch (opt) {
+			break; case 'd': delay = strtoul(optarg, NULL, 10);
+			break; case 'n': game = strtoul(optarg, NULL, 10);
+			break; default:  return EX_USAGE;
+		}
+	}
+	curse();
+	deal(game);
+	atexit(status);
+	while (!win()) {
+		while (q.r < q.w) {
+			deq();
+			draw();
+			refresh();
+			usleep(delay * 1000);
+			if (q.r == q.w) autoEnq();
+		}
+		draw();
+		input();
+	}
+	endwin();
+}
diff --git a/bin/glitch.c b/bin/glitch.c
new file mode 100644
index 00000000..9747f35a
--- /dev/null
+++ b/bin/glitch.c
@@ -0,0 +1,538 @@
+/* Copyright (C) 2018  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <arpa/inet.h>
+#include <err.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+#include <zlib.h>
+
+#define PACKED __attribute__((packed))
+
+#define CRC_INIT (crc32(0, Z_NULL, 0))
+
+static const char *path;
+static FILE *file;
+static uint32_t crc;
+
+static void readExpect(void *ptr, size_t size, const char *expect) {
+	fread(ptr, size, 1, file);
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+	if (feof(file)) errx(EX_DATAERR, "%s: missing %s", path, expect);
+	crc = crc32(crc, ptr, size);
+}
+
+static void writeExpect(const void *ptr, size_t size) {
+	fwrite(ptr, size, 1, file);
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+	crc = crc32(crc, ptr, size);
+}
+
+static const uint8_t Signature[8] = "\x89PNG\r\n\x1A\n";
+
+static void readSignature(void) {
+	uint8_t signature[8];
+	readExpect(signature, 8, "signature");
+	if (0 != memcmp(signature, Signature, 8)) {
+		errx(EX_DATAERR, "%s: invalid signature", path);
+	}
+}
+
+static void writeSignature(void) {
+	writeExpect(Signature, sizeof(Signature));
+}
+
+struct PACKED Chunk {
+	uint32_t size;
+	char type[4];
+};
+
+static const char *typeStr(struct Chunk chunk) {
+	static char buf[5];
+	memcpy(buf, chunk.type, 4);
+	return buf;
+}
+
+static struct Chunk readChunk(void) {
+	struct Chunk chunk;
+	readExpect(&chunk, sizeof(chunk), "chunk");
+	chunk.size = ntohl(chunk.size);
+	crc = crc32(CRC_INIT, (Byte *)chunk.type, sizeof(chunk.type));
+	return chunk;
+}
+
+static void writeChunk(struct Chunk chunk) {
+	chunk.size = htonl(chunk.size);
+	writeExpect(&chunk, sizeof(chunk));
+	crc = crc32(CRC_INIT, (Byte *)chunk.type, sizeof(chunk.type));
+}
+
+static void readCrc(void) {
+	uint32_t expected = crc;
+	uint32_t found;
+	readExpect(&found, sizeof(found), "CRC32");
+	found = ntohl(found);
+	if (found != expected) {
+		errx(
+			EX_DATAERR, "%s: expected CRC32 %08X, found %08X",
+			path, expected, found
+		);
+	}
+}
+
+static void writeCrc(void) {
+	uint32_t net = htonl(crc);
+	writeExpect(&net, sizeof(net));
+}
+
+static void skipChunk(struct Chunk chunk) {
+	uint8_t discard[chunk.size];
+	readExpect(discard, sizeof(discard), "chunk data");
+	readCrc();
+}
+
+static struct PACKED {
+	uint32_t width;
+	uint32_t height;
+	uint8_t depth;
+	enum PACKED {
+		Grayscale      = 0,
+		Truecolor      = 2,
+		Indexed        = 3,
+		GrayscaleAlpha = 4,
+		TruecolorAlpha = 6,
+	} color;
+	uint8_t compression;
+	uint8_t filter;
+	uint8_t interlace;
+} header;
+_Static_assert(13 == sizeof(header), "header size");
+
+static size_t pixelBits(void) {
+	switch (header.color) {
+		case Grayscale:      return 1 * header.depth;
+		case Truecolor:      return 3 * header.depth;
+		case Indexed:        return 1 * header.depth;
+		case GrayscaleAlpha: return 2 * header.depth;
+		case TruecolorAlpha: return 4 * header.depth;
+		default: abort();
+	}
+}
+
+static size_t pixelSize(void) {
+	return (pixelBits() + 7) / 8;
+}
+
+static size_t lineSize(void) {
+	return (header.width * pixelBits() + 7) / 8;
+}
+
+static size_t dataSize(void) {
+	return (1 + lineSize()) * header.height;
+}
+
+static void readHeader(void) {
+	struct Chunk ihdr = readChunk();
+	if (0 != memcmp(ihdr.type, "IHDR", 4)) {
+		errx(EX_DATAERR, "%s: expected IHDR, found %s", path, typeStr(ihdr));
+	}
+	if (ihdr.size != sizeof(header)) {
+		errx(
+			EX_DATAERR, "%s: expected IHDR size %zu, found %u",
+			path, sizeof(header), ihdr.size
+		);
+	}
+	readExpect(&header, sizeof(header), "header");
+	readCrc();
+	header.width = ntohl(header.width);
+	header.height = ntohl(header.height);
+	if (!header.width) errx(EX_DATAERR, "%s: invalid width 0", path);
+	if (!header.height) errx(EX_DATAERR, "%s: invalid height 0", path);
+}
+
+static void writeHeader(void) {
+	struct Chunk ihdr = { .size = sizeof(header), .type = "IHDR" };
+	writeChunk(ihdr);
+	header.width = htonl(header.width);
+	header.height = htonl(header.height);
+	writeExpect(&header, sizeof(header));
+	writeCrc();
+	header.width = ntohl(header.width);
+	header.height = ntohl(header.height);
+}
+
+static struct {
+	uint32_t len;
+	uint8_t entries[256][3];
+} palette;
+
+static void readPalette(void) {
+	struct Chunk chunk;
+	for (;;) {
+		chunk = readChunk();
+		if (0 == memcmp(chunk.type, "PLTE", 4)) break;
+		skipChunk(chunk);
+	}
+	palette.len = chunk.size / 3;
+	readExpect(palette.entries, chunk.size, "palette data");
+	readCrc();
+}
+
+static void writePalette(void) {
+	struct Chunk plte = { .size = 3 * palette.len, .type = "PLTE" };
+	writeChunk(plte);
+	writeExpect(palette.entries, plte.size);
+	writeCrc();
+}
+
+static uint8_t *data;
+
+static void readData(void) {
+	data = malloc(dataSize());
+	if (!data) err(EX_OSERR, "malloc(%zu)", dataSize());
+
+	struct z_stream_s stream = { .next_out = data, .avail_out = dataSize() };
+	int error = inflateInit(&stream);
+	if (error != Z_OK) errx(EX_SOFTWARE, "%s: inflateInit: %s", path, stream.msg);
+
+	for (;;) {
+		struct Chunk chunk = readChunk();
+		if (0 == memcmp(chunk.type, "IDAT", 4)) {
+			uint8_t *idat = malloc(chunk.size);
+			if (!idat) err(EX_OSERR, "malloc");
+
+			readExpect(idat, chunk.size, "image data");
+			readCrc();
+
+			stream.next_in = idat;
+			stream.avail_in = chunk.size;
+			int error = inflate(&stream, Z_SYNC_FLUSH);
+			free(idat);
+
+			if (error == Z_STREAM_END) break;
+			if (error != Z_OK) errx(EX_DATAERR, "%s: inflate: %s", path, stream.msg);
+
+		} else if (0 == memcmp(chunk.type, "IEND", 4)) {
+			errx(EX_DATAERR, "%s: missing IDAT chunk", path);
+		} else {
+			skipChunk(chunk);
+		}
+	}
+
+	inflateEnd(&stream);
+	if ((size_t)stream.total_out != dataSize()) {
+		errx(
+			EX_DATAERR, "%s: expected data size %zu, found %zu",
+			path, dataSize(), (size_t)stream.total_out
+		);
+	}
+}
+
+static void writeData(void) {
+	uLong size = compressBound(dataSize());
+	uint8_t *deflate = malloc(size);
+	if (!deflate) err(EX_OSERR, "malloc");
+
+	int error = compress2(deflate, &size, data, dataSize(), Z_BEST_SPEED);
+	if (error != Z_OK) errx(EX_SOFTWARE, "%s: compress2: %d", path, error);
+
+	struct Chunk idat = { .size = size, .type = "IDAT" };
+	writeChunk(idat);
+	writeExpect(deflate, size);
+	writeCrc();
+
+	free(deflate);
+}
+
+static void writeEnd(void) {
+	struct Chunk iend = { .size = 0, .type = "IEND" };
+	writeChunk(iend);
+	writeCrc();
+}
+
+enum PACKED Filter {
+	None,
+	Sub,
+	Up,
+	Average,
+	Paeth,
+	FilterCount,
+};
+
+static struct {
+	bool brokenPaeth;
+	bool filt;
+	bool recon;
+	uint8_t declareFilter;
+	uint8_t applyFilter;
+	enum Filter declareFilters[255];
+	enum Filter applyFilters[255];
+	bool invert;
+	bool mirror;
+	bool zeroX;
+	bool zeroY;
+} options;
+
+struct Bytes {
+	uint8_t x;
+	uint8_t a;
+	uint8_t b;
+	uint8_t c;
+};
+
+static uint8_t paethPredictor(struct Bytes f) {
+	int32_t p = (int32_t)f.a + (int32_t)f.b - (int32_t)f.c;
+	int32_t pa = abs(p - (int32_t)f.a);
+	int32_t pb = abs(p - (int32_t)f.b);
+	int32_t pc = abs(p - (int32_t)f.c);
+	if (pa <= pb && pa <= pc) return f.a;
+	if (options.brokenPaeth) {
+		if (pb < pc) return f.b;
+	} else {
+		if (pb <= pc) return f.b;
+	}
+	return f.c;
+}
+
+static uint8_t recon(enum Filter type, struct Bytes f) {
+	switch (type) {
+		case None:    return f.x;
+		case Sub:     return f.x + f.a;
+		case Up:      return f.x + f.b;
+		case Average: return f.x + ((uint32_t)f.a + (uint32_t)f.b) / 2;
+		case Paeth:   return f.x + paethPredictor(f);
+		default:      abort();
+	}
+}
+
+static uint8_t filt(enum Filter type, struct Bytes f) {
+	switch (type) {
+		case None:    return f.x;
+		case Sub:     return f.x - f.a;
+		case Up:      return f.x - f.b;
+		case Average: return f.x - ((uint32_t)f.a + (uint32_t)f.b) / 2;
+		case Paeth:   return f.x - paethPredictor(f);
+		default:      abort();
+	}
+}
+
+static struct Line {
+	enum Filter type;
+	uint8_t data[];
+} **lines;
+
+static void scanlines(void) {
+	lines = calloc(header.height, sizeof(*lines));
+	if (!lines) err(EX_OSERR, "calloc(%u, %zu)", header.height, sizeof(*lines));
+
+	size_t stride = 1 + lineSize();
+	for (uint32_t y = 0; y < header.height; ++y) {
+		lines[y] = (struct Line *)&data[y * stride];
+		if (lines[y]->type >= FilterCount) {
+			errx(EX_DATAERR, "%s: invalid filter type %hhu", path, lines[y]->type);
+		}
+	}
+}
+
+static struct Bytes origBytes(uint32_t y, size_t i) {
+	bool a = (i >= pixelSize()), b = (y > 0), c = (a && b);
+	return (struct Bytes) {
+		.x = lines[y]->data[i],
+		.a = a ? lines[y]->data[i - pixelSize()] : 0,
+		.b = b ? lines[y - 1]->data[i] : 0,
+		.c = c ? lines[y - 1]->data[i - pixelSize()] : 0,
+	};
+}
+
+static void reconData(void) {
+	for (uint32_t y = 0; y < header.height; ++y) {
+		for (size_t i = 0; i < lineSize(); ++i) {
+			if (options.filt) {
+				lines[y]->data[i] = filt(lines[y]->type, origBytes(y, i));
+			} else {
+				lines[y]->data[i] = recon(lines[y]->type, origBytes(y, i));
+			}
+		}
+		lines[y]->type = None;
+	}
+}
+
+static void filterData(void) {
+	for (uint32_t y = header.height - 1; y < header.height; --y) {
+		uint8_t filter[FilterCount][lineSize()];
+		uint32_t heuristic[FilterCount] = {0};
+		enum Filter minType = None;
+		for (enum Filter type = None; type < FilterCount; ++type) {
+			for (size_t i = 0; i < lineSize(); ++i) {
+				if (options.recon) {
+					filter[type][i] = recon(type, origBytes(y, i));
+				} else {
+					filter[type][i] = filt(type, origBytes(y, i));
+				}
+				heuristic[type] += abs((int8_t)filter[type][i]);
+			}
+			if (heuristic[type] < heuristic[minType]) minType = type;
+		}
+
+		if (options.declareFilter) {
+			lines[y]->type = options.declareFilters[y % options.declareFilter];
+		} else {
+			lines[y]->type = minType;
+		}
+
+		if (options.applyFilter) {
+			enum Filter type = options.applyFilters[y % options.applyFilter];
+			memcpy(lines[y]->data, filter[type], lineSize());
+		} else {
+			memcpy(lines[y]->data, filter[minType], lineSize());
+		}
+	}
+}
+
+static void invert(void) {
+	for (uint32_t y = 0; y < header.height; ++y) {
+		for (size_t i = 0; i < lineSize(); ++i) {
+			lines[y]->data[i] ^= 0xFF;
+		}
+	}
+}
+
+static void mirror(void) {
+	for (uint32_t y = 0; y < header.height; ++y) {
+		for (size_t i = 0, j = lineSize() - 1; i < j; ++i, --j) {
+			uint8_t t = lines[y]->data[i];
+			lines[y]->data[i] = lines[y]->data[j];
+			lines[y]->data[j] = t;
+		}
+	}
+}
+
+static void zeroX(void) {
+	for (uint32_t y = 0; y < header.height; ++y) {
+		memset(lines[y]->data, 0, pixelSize());
+	}
+}
+
+static void zeroY(void) {
+	memset(lines[0]->data, 0, lineSize());
+}
+
+static void glitch(const char *inPath, const char *outPath) {
+	if (inPath) {
+		path = inPath;
+		file = fopen(path, "r");
+		if (!file) err(EX_NOINPUT, "%s", path);
+	} else {
+		path = "(stdin)";
+		file = stdin;
+	}
+
+	readSignature();
+	readHeader();
+	if (header.color == Indexed) readPalette();
+	readData();
+	fclose(file);
+
+	scanlines();
+	reconData();
+	filterData();
+	if (options.invert) invert();
+	if (options.mirror) mirror();
+	if (options.zeroX) zeroX();
+	if (options.zeroY) zeroY();
+	free(lines);
+
+	if (outPath) {
+		path = outPath;
+		file = fopen(path, "w");
+		if (!file) err(EX_CANTCREAT, "%s", path);
+	} else {
+		path = "(stdout)";
+		file = stdout;
+	}
+
+	writeSignature();
+	writeHeader();
+	if (header.color == Indexed) writePalette();
+	writeData();
+	writeEnd();
+	free(data);
+
+	int error = fclose(file);
+	if (error) err(EX_IOERR, "%s", path);
+}
+
+static enum Filter parseFilter(const char *s) {
+	switch (s[0]) {
+		case 'N': case 'n': return None;
+		case 'S': case 's': return Sub;
+		case 'U': case 'u': return Up;
+		case 'A': case 'a': return Average;
+		case 'P': case 'p': return Paeth;
+		default: errx(EX_USAGE, "invalid filter type %s", s);
+	}
+}
+
+static uint8_t parseFilters(enum Filter *filters, const char *s) {
+	uint8_t len = 0;
+	do {
+		filters[len++] = parseFilter(s);
+		s = strchr(s, ',');
+	} while (s++);
+	return len;
+}
+
+int main(int argc, char *argv[]) {
+	bool stdio = false;
+	char *output = NULL;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "a:cd:fimo:prxy"))) {
+		switch (opt) {
+			break; case 'a':
+				options.applyFilter = parseFilters(options.applyFilters, optarg);
+			break; case 'c': stdio = true;
+			break; case 'd':
+				options.declareFilter = parseFilters(options.declareFilters, optarg);
+			break; case 'f': options.filt = true;
+			break; case 'i': options.invert = true;
+			break; case 'm': options.mirror = true;
+			break; case 'o': output = optarg;
+			break; case 'p': options.brokenPaeth = true;
+			break; case 'r': options.recon = true;
+			break; case 'x': options.zeroX = true;
+			break; case 'y': options.zeroY = true;
+			break; default: return EX_USAGE;
+		}
+	}
+
+	if (argc - optind == 1 && (output || stdio)) {
+		glitch(argv[optind], output);
+	} else if (optind < argc) {
+		for (int i = optind; i < argc; ++i) {
+			glitch(argv[i], argv[i]);
+		}
+	} else {
+		glitch(NULL, output);
+	}
+
+	return EX_OK;
+}
diff --git a/bin/hilex.c b/bin/hilex.c
new file mode 100644
index 00000000..91a5e889
--- /dev/null
+++ b/bin/hilex.c
@@ -0,0 +1,391 @@
+/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <ctype.h>
+#include <err.h>
+#include <regex.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#include "hilex.h"
+
+#define ARRAY_LEN(a) (sizeof(a) / sizeof(a[0]))
+
+static const char *Class[] = {
+#define X(class) [class] = #class,
+	ENUM_CLASS
+#undef X
+};
+
+static FILE *yyin;
+static char *yytext;
+static int yylex(void) {
+	static size_t cap = 0;
+	return (getline(&yytext, &cap, yyin) < 0 ? None : Normal);
+}
+static const struct Lexer LexText = { yylex, &yyin, &yytext };
+
+static const struct {
+	const struct Lexer *lexer;
+	const char *name;
+	const char *namePatt;
+	const char *linePatt;
+} Lexers[] = {
+	{ &LexC, "c", "[.][chlmy]$", NULL },
+	{ &LexMake, "make", "[.](mk|am)$|^Makefile$", NULL },
+	{ &LexMdoc, "mdoc", "[.][1-9]$", "^[.]Dd" },
+	{ &LexSh, "sh", "[.]sh$|^[.](profile|shrc)$", "^#![ ]?/bin/sh" },
+	{ &LexText, "text", "[.]txt$", NULL },
+};
+
+static const struct Lexer *parseLexer(const char *name) {
+	for (size_t i = 0; i < ARRAY_LEN(Lexers); ++i) {
+		if (!strcmp(name, Lexers[i].name)) return Lexers[i].lexer;
+	}
+	errx(EX_USAGE, "unknown lexer %s", name);
+}
+
+static void ungets(const char *str, FILE *file) {
+	size_t len = strlen(str);
+	for (size_t i = len-1; i < len; --i) {
+		int ch = ungetc(str[i], file);
+		if (ch == EOF) errx(EX_IOERR, "cannot push back string");
+	}
+}
+
+static const struct Lexer *matchLexer(const char *name, FILE *file) {
+	char buf[256];
+	regex_t regex;
+	for (size_t i = 0; i < ARRAY_LEN(Lexers); ++i) {
+		int error = regcomp(
+			&regex, Lexers[i].namePatt, REG_EXTENDED | REG_NOSUB
+		);
+		assert(!error);
+		error = regexec(&regex, name, 0, NULL, 0);
+		regfree(&regex);
+		if (!error) return Lexers[i].lexer;
+	}
+	char *line = fgets(buf, sizeof(buf), file);
+	if (!line) return NULL;
+	for (size_t i = 0; i < ARRAY_LEN(Lexers); ++i) {
+		if (!Lexers[i].linePatt) continue;
+		int error = regcomp(
+			&regex, Lexers[i].linePatt, REG_EXTENDED | REG_NOSUB
+		);
+		assert(!error);
+		error = regexec(&regex, line, 0, NULL, 0);
+		regfree(&regex);
+		if (!error) {
+			ungets(line, file);
+			return Lexers[i].lexer;
+		}
+	}
+	ungets(line, file);
+	return NULL;
+}
+
+#define ENUM_OPTION \
+	X(Document, "document") \
+	X(Inline, "inline") \
+	X(Monospace, "monospace") \
+	X(Pre, "pre") \
+	X(Style, "style") \
+	X(Tab, "tab") \
+	X(Title, "title")
+
+enum Option {
+#define X(option, key) option,
+	ENUM_OPTION
+#undef X
+	OptionCap,
+};
+
+typedef void Header(const char *opts[]);
+typedef void Output(const char *opts[], enum Class class, const char *text);
+
+static bool pager;
+static void ansiHeader(const char *opts[]) {
+	(void)opts;
+	if (!pager) return;
+	const char *shell = getenv("SHELL");
+	const char *pager = getenv("PAGER");
+	if (!shell) shell = "/bin/sh";
+	if (!pager) pager = "less";
+	setenv("LESS", "FRX", 0);
+
+	int rw[2];
+	int error = pipe(rw);
+	if (error) err(EX_OSERR, "pipe");
+
+	pid_t pid = fork();
+	if (pid < 0) err(EX_OSERR, "fork");
+	if (!pid) {
+		dup2(rw[0], STDIN_FILENO);
+		close(rw[0]);
+		close(rw[1]);
+		execl(shell, shell, "-c", pager, NULL);
+		err(EX_CONFIG, "%s", shell);
+	}
+	dup2(rw[1], STDOUT_FILENO);
+	close(rw[0]);
+	close(rw[1]);
+	setlinebuf(stdout);
+}
+
+static void ansiFooter(const char *opts[]) {
+	(void)opts;
+	if (!pager) return;
+	int status;
+	fclose(stdout);
+	wait(&status);
+}
+
+static const char *SGR[ClassCap] = {
+	[Keyword] = "37",
+	[Macro]   = "32",
+	[Comment] = "34",
+	[String]  = "36",
+	[Format]  = "36;1;96",
+	[Subst]   = "33",
+};
+
+static void ansiFormat(const char *opts[], enum Class class, const char *text) {
+	(void)opts;
+	if (!SGR[class]) {
+		printf("%s", text);
+		return;
+	}
+	// Set color on each line for piping to less -R:
+	for (const char *nl; (nl = strchr(text, '\n')); text = &nl[1]) {
+		printf("\33[%sm%.*s\33[m\n", SGR[class], (int)(nl - text), text);
+	}
+	if (*text) printf("\33[%sm%s\33[m", SGR[class], text);
+}
+
+static void
+debugFormat(const char *opts[], enum Class class, const char *text) {
+	if (class != Normal) {
+		printf("%s(", Class[class]);
+		ansiFormat(opts, class, text);
+		printf(")");
+	} else {
+		printf("%s", text);
+	}
+}
+
+static const char *IRC[ClassCap] = {
+	[Keyword] = "\00315",
+	[Macro]   = "\0033",
+	[Comment] = "\0032",
+	[String]  = "\00310",
+	[Format]  = "\00311",
+	[Subst]   = "\0037",
+};
+
+static void ircHeader(const char *opts[]) {
+	if (opts[Monospace]) printf("\21");
+}
+
+static const char *stop(const char *text) {
+	return (*text == ',' || isdigit(*text) ? "\2\2" : "");
+}
+
+static void ircFormat(const char *opts[], enum Class class, const char *text) {
+	for (const char *nl; (nl = strchr(text, '\n')); text = &nl[1]) {
+		if (IRC[class]) printf("%s%s", IRC[class], stop(text));
+		printf("%.*s\n", (int)(nl - text), text);
+		if (opts[Monospace]) printf("\21");
+	}
+	if (*text) {
+		if (IRC[class]) {
+			printf("%s%s%s\17", IRC[class], stop(text), text);
+			if (opts[Monospace]) printf("\21");
+		} else {
+			printf("%s", text);
+		}
+	}
+}
+
+static void htmlEscape(const char *text) {
+	while (*text) {
+		switch (*text) {
+			break; case '"': text++; printf("&quot;");
+			break; case '&': text++; printf("&amp;");
+			break; case '<': text++; printf("&lt;");
+		}
+		size_t len = strcspn(text, "\"&<");
+		if (len) fwrite(text, len, 1, stdout);
+		text += len;
+	}
+}
+
+static const char *Styles[ClassCap] = {
+	[Keyword] = "color: dimgray;",
+	[Macro]   = "color: green;",
+	[Comment] = "color: navy;",
+	[String]  = "color: teal;",
+	[Format]  = "color: teal; font-weight: bold;",
+	[Subst]   = "color: olive;",
+};
+
+static void styleTabSize(const char *tab) {
+	printf("-moz-tab-size: ");
+	htmlEscape(tab);
+	printf("; tab-size: ");
+	htmlEscape(tab);
+	printf(";");
+}
+
+static void htmlHeader(const char *opts[]) {
+	if (!opts[Document]) goto body;
+
+	printf("<!DOCTYPE html>\n<title>");
+	if (opts[Title]) htmlEscape(opts[Title]);
+	printf("</title>\n");
+
+	if (opts[Style]) {
+		printf("<link rel=\"stylesheet\" href=\"");
+		htmlEscape(opts[Style]);
+		printf("\">\n");
+	} else if (!opts[Inline]) {
+		printf("<style>\n");
+		if (opts[Tab]) {
+			printf("pre.hilex { ");
+			styleTabSize(opts[Tab]);
+			printf(" }\n");
+		}
+		for (enum Class class = 0; class < ClassCap; ++class) {
+			if (!Styles[class]) continue;
+			printf("pre.hilex .%.2s { %s }\n", Class[class], Styles[class]);
+		}
+		printf("</style>\n");
+	}
+
+body:
+	if ((opts[Document] || opts[Pre]) && opts[Inline] && opts[Tab]) {
+		printf("<pre class=\"hilex\" style=\"");
+		styleTabSize(opts[Tab]);
+		printf("\">");
+	} else if (opts[Document] || opts[Pre]) {
+		printf("<pre class=\"hilex\">");
+	}
+}
+
+static void htmlFooter(const char *opts[]) {
+	if (opts[Document] || opts[Pre]) printf("</pre>");
+	if (opts[Document]) printf("\n");
+}
+
+static void htmlFormat(const char *opts[], enum Class class, const char *text) {
+	if (class != Normal) {
+		if (opts[Inline]) {
+			printf("<span style=\"%s\">", Styles[class] ? Styles[class] : "");
+		} else {
+			printf("<span class=\"%.2s\">", Class[class]);
+		}
+		htmlEscape(text);
+		printf("</span>");
+	} else {
+		htmlEscape(text);
+	}
+}
+
+static const struct Formatter {
+	const char *name;
+	Header *header;
+	Output *format;
+	Header *footer;
+} Formatters[] = {
+	{ "ansi", ansiHeader, ansiFormat, ansiFooter },
+	{ "debug", NULL, debugFormat, NULL },
+	{ "html", htmlHeader, htmlFormat, htmlFooter },
+	{ "irc", ircHeader, ircFormat, NULL },
+};
+
+static const struct Formatter *parseFormatter(const char *name) {
+	for (size_t i = 0; i < ARRAY_LEN(Formatters); ++i) {
+		if (!strcmp(name, Formatters[i].name)) return &Formatters[i];
+	}
+	errx(EX_USAGE, "unknown formatter %s", name);
+}
+
+static char *const OptionKeys[OptionCap + 1] = {
+#define X(option, key) [option] = key,
+	ENUM_OPTION
+#undef X
+	NULL,
+};
+
+int main(int argc, char *argv[]) {
+	bool text = false;
+	const char *name = NULL;
+	const struct Lexer *lexer = NULL;
+	const struct Formatter *formatter = &Formatters[0];
+	const char *opts[OptionCap] = {0};
+
+	for (int opt; 0 < (opt = getopt(argc, argv, "f:l:n:o:t"));) {
+		switch (opt) {
+			break; case 'f': formatter = parseFormatter(optarg);
+			break; case 'l': lexer = parseLexer(optarg);
+			break; case 'n': name = optarg;
+			break; case 'o': {
+				while (*optarg) {
+					char *val;
+					int key = getsubopt(&optarg, OptionKeys, &val);
+					if (key < 0) errx(EX_USAGE, "no such option %s", val);
+					opts[key] = (val ? val : "");
+				}
+			}
+			break; case 't': text = true;
+			break; default:  return EX_USAGE;
+		}
+	}
+
+	const char *path = "(stdin)";
+	FILE *file = stdin;
+	if (optind < argc) {
+		path = argv[optind];
+		file = fopen(path, "r");
+		if (!file) err(EX_NOINPUT, "%s", path);
+		pager = isatty(STDOUT_FILENO);
+	}
+
+	if (!name) {
+		if (NULL != (name = strrchr(path, '/'))) {
+			name++;
+		} else {
+			name = path;
+		}
+	}
+	if (!opts[Title]) opts[Title] = name;
+	if (!lexer) lexer = matchLexer(name, file);
+	if (!lexer && text) lexer = &LexText;
+	if (!lexer) errx(EX_USAGE, "cannot infer lexer for %s", name);
+
+	*lexer->in = file;
+	if (formatter->header) formatter->header(opts);
+	for (enum Class class; None != (class = lexer->lex());) {
+		assert(class < ClassCap);
+		formatter->format(opts, class, *lexer->text);
+	}
+	if (formatter->footer) formatter->footer(opts);
+}
diff --git a/bin/hilex.h b/bin/hilex.h
new file mode 100644
index 00000000..882b5f95
--- /dev/null
+++ b/bin/hilex.h
@@ -0,0 +1,50 @@
+/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+
+#define ENUM_CLASS \
+	X(None) \
+	X(Normal) \
+	X(Operator) \
+	X(Number) \
+	X(Keyword) \
+	X(Ident) \
+	X(Macro) \
+	X(Comment) \
+	X(String) \
+	X(Escape) \
+	X(Format) \
+	X(Subst)
+
+enum Class {
+#define X(class) class,
+	ENUM_CLASS
+#undef X
+	ClassCap,
+};
+
+typedef int Lex(void);
+struct Lexer {
+	Lex *lex;
+	FILE **in;
+	char **text;
+};
+
+extern const struct Lexer LexC;
+extern const struct Lexer LexMake;
+extern const struct Lexer LexMdoc;
+extern const struct Lexer LexSh;
diff --git a/bin/htagml.c b/bin/htagml.c
new file mode 100644
index 00000000..eb5128d1
--- /dev/null
+++ b/bin/htagml.c
@@ -0,0 +1,207 @@
+/* Copyright (C) 2021  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ctype.h>
+#include <err.h>
+#include <regex.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+static char *nomagic(const char *pattern) {
+	char *buf = malloc(2 * strlen(pattern) + 1);
+	if (!buf) err(EX_OSERR, "malloc");
+	char *ptr = buf;
+	for (const char *ch = pattern; *ch; ++ch) {
+		if (strchr(".[*", *ch)) *ptr++ = '\\';
+		*ptr++ = *ch;
+	}
+	*ptr = '\0';
+	return buf;
+}
+
+static size_t escape(bool esc, const char *ptr, size_t len) {
+	if (!esc) {
+		fwrite(ptr, len, 1, stdout);
+		return len;
+	}
+	for (size_t i = 0; i < len; ++i) {
+		switch (ptr[i]) {
+			break; case '&': printf("&amp;");
+			break; case '<': printf("&lt;");
+			break; case '"': printf("&quot;");
+			break; default:  putchar(ptr[i]);
+		}
+	}
+	return len;
+}
+
+static void id(const char *tag) {
+	for (const char *ch = tag; *ch; ++ch) {
+		if (isalnum(*ch) || strchr("-._", *ch)) {
+			putchar(*ch);
+		} else {
+			putchar('_');
+		}
+	}
+}
+
+static char *hstrstr(const char *haystack, const char *needle) {
+	while (haystack) {
+		char *elem = strchr(haystack, '<');
+		char *match = strstr(haystack, needle);
+		if (!match) return NULL;
+		if (!elem || match < elem) return match;
+		haystack = strchr(elem, '>');
+	}
+	return NULL;
+}
+
+int main(int argc, char *argv[]) {
+	bool pre = false;
+	bool pipe = false;
+	bool index = false;
+	const char *tagsFile = "tags";
+	for (int opt; 0 < (opt = getopt(argc, argv, "f:ipx"));) {
+		switch (opt) {
+			break; case 'f': tagsFile = optarg;
+			break; case 'i': pipe = true;
+			break; case 'p': pre = true;
+			break; case 'x': index = true;
+			break; default:  return EX_USAGE;
+		}
+	}
+	if (optind == argc) errx(EX_USAGE, "name required");
+	const char *name = argv[optind];
+
+	FILE *file = fopen(tagsFile, "r");
+	if (!file) err(EX_NOINPUT, "%s", tagsFile);
+
+	size_t len = 0;
+	size_t cap = 256;
+	struct Tag {
+		char *tag;
+		int num;
+		regex_t regex;
+	} *tags = malloc(cap * sizeof(*tags));
+	if (!tags) err(EX_OSERR, "malloc");
+
+	char *buf = NULL;
+	size_t bufCap = 0;
+	while (0 < getline(&buf, &bufCap, file)) {
+		char *line = buf;
+		char *tag = strsep(&line, "\t");
+		char *file = strsep(&line, "\t");
+		char *def = strsep(&line, "\n");
+		if (!tag || !file || !def) errx(EX_DATAERR, "malformed tags file");
+
+		if (strcmp(file, name)) continue;
+		if (len == cap) {
+			tags = realloc(tags, (cap *= 2) * sizeof(*tags));
+			if (!tags) err(EX_OSERR, "realloc");
+		}
+		tags[len].tag = strdup(tag);
+		if (!tags[len].tag) err(EX_OSERR, "strdup");
+
+		tags[len].num = 0;
+		if (def[0] == '/' || def[0] == '?') {
+			def++;
+			def[strlen(def)-1] = '\0';
+			char *search = nomagic(def);
+			int error = regcomp(
+				&tags[len].regex, search, REG_NEWLINE | REG_NOSUB
+			);
+			free(search);
+			if (error) {
+				warnx("invalid regex for tag %s: %s", tag, def);
+				continue;
+			}
+		} else {
+			tags[len].num = strtol(def, &def, 10);
+			if (*def) {
+				warnx("invalid line number for tag %s: %s", tag, def);
+				continue;
+			}
+		}
+		len++;
+	}
+	fclose(file);
+
+	file = fopen(name, "r");
+	if (!file) err(EX_NOINPUT, "%s", name);
+
+	int num = 0;
+	printf(pre ? "<pre>" : index ? "<ul class=\"index\">\n" : "");
+	while (0 < getline(&buf, &bufCap, file) && ++num) {
+		struct Tag *tag = NULL;
+		for (size_t i = 0; i < len; ++i) {
+			if (tags[i].num) {
+				if (num != tags[i].num) continue;
+			} else {
+				if (regexec(&tags[i].regex, buf, 0, NULL, 0)) continue;
+			}
+			tag = &tags[i];
+			tag->num = num;
+			break;
+		}
+		if (index) {
+			if (!tag) continue;
+			printf("<li><a class=\"tag\" href=\"#");
+			id(tag->tag);
+			printf("\">");
+			escape(true, tag->tag, strlen(tag->tag));
+			printf("</a></li>\n");
+			continue;
+		}
+		if (pipe) {
+			ssize_t len = getline(&buf, &bufCap, stdin);
+			if (len < 0) {
+				errx(EX_DATAERR, "missing line %d on standard input", num);
+			}
+		}
+		if (!tag) {
+			escape(!pipe, buf, strlen(buf));
+			continue;
+		}
+
+		size_t mlen = strlen(tag->tag);
+		char *match = (pipe ? hstrstr : strstr)(buf, tag->tag);
+		while (match > buf && isalnum(match[-1])) {
+			match = (pipe ? hstrstr : strstr)(&match[mlen], tag->tag);
+		}
+		if (!match && tag->tag[0] == 'M') {
+			mlen = 4;
+			match = (pipe ? hstrstr : strstr)(buf, "main");
+		}
+		if (!match) {
+			mlen = strlen(buf) - 1;
+			match = buf;
+		}
+		escape(!pipe, buf, match - buf);
+		printf("<a class=\"tag\" id=\"");
+		id(tag->tag);
+		printf("\" href=\"#");
+		id(tag->tag);
+		printf("\">");
+		match += escape(!pipe, match, mlen);
+		printf("</a>");
+		escape(!pipe, match, strlen(match));
+	}
+	printf(pre ? "</pre>" : index ? "</ul>\n" : "");
+}
diff --git a/bin/html.mk b/bin/html.mk
new file mode 100644
index 00000000..15e5257a
--- /dev/null
+++ b/bin/html.mk
@@ -0,0 +1,45 @@
+WEBROOT ?= /usr/local/www/causal.agency
+
+HTMLS = index.html png.html
+HTMLS += ${BINS:=.html}
+HTMLS += ${BSD:=.html}
+HTMLS += ${GAMES:=.html}
+HTMLS += ${LINUX:=.html}
+HTMLS += ${TLS:=.html}
+
+html: ${HTMLS}
+	@true
+
+install-html: ${HTMLS}
+	install -d ${WEBROOT}/bin
+	install -C -m 644 ${HTMLS} ${WEBROOT}/bin
+
+${HTMLS}: html.sh scheme hilex htagml htmltags
+
+htmltags: *.[chly] mtags Makefile html.mk *.sh
+	rm -f $@
+	for f in *.[chly]; do ctags -aw -f $@ $$f; done
+	./mtags -a -f $@ Makefile html.mk *.sh
+
+index.html: README.7 Makefile html.mk html.sh
+	sh html.sh README.7 Makefile html.mk html.sh > $@
+
+.SUFFIXES: .html
+
+.c.html:
+	sh html.sh man1/${<:.c=.1} $< > $@
+
+.h.html:
+	sh html.sh man3/${<:.h=.3} $< > $@
+
+.y.html:
+	sh html.sh man1/${<:.y=.1} $< > $@
+
+.sh.html:
+	sh html.sh man1/${<:.sh=.1} $< > $@
+
+.pl.html:
+	sh html.sh man1/${<:.pl=.1} $< > $@
+
+freecell.html: freecell.c man6/freecell.6
+	sh html.sh man6/freecell.6 freecell.c > $@
diff --git a/bin/html.sh b/bin/html.sh
new file mode 100644
index 00000000..d76fcc8c
--- /dev/null
+++ b/bin/html.sh
@@ -0,0 +1,65 @@
+#!/bin/sh
+set -eu
+
+readonly GitURL='https://git.causal.agency/src/tree/bin'
+
+man=$1
+shift
+title=${man##*/}
+title=${title%.[1-9]}
+
+cat <<EOF
+<!DOCTYPE html>
+<meta charset="UTF-8">
+<title>${title}</title>
+<style>
+html { line-height: 1.25em; font-family: monospace; }
+body { max-width: 80ch; margin: 1em auto; padding: 0 1ch; }
+
+table.head, table.foot { width: 100%; }
+td.head-rtitle, td.foot-os { text-align: right; }
+td.head-vol { text-align: center; }
+div.Pp { margin: 1ex 0ex; }
+div.Nd, div.Bf, div.Op { display: inline; }
+span.Pa, span.Ad { font-style: italic; }
+span.Ms { font-weight: bold; }
+dl.Bl-diag > dt { font-weight: bold; }
+code.Nm, code.Fl, code.Cm, code.Ic, code.In, code.Fd, code.Fn,
+code.Cd { font-weight: bold; font-family: inherit; }
+
+table { border-collapse: collapse; }
+table.Nm code.Nm { padding-right: 1ch; }
+table.foot { margin-top: 1em; }
+
+ul.index { padding: 0; }
+ul.index li { display: inline; list-style-type: none; }
+pre { -moz-tab-size: 4; tab-size: 4; }
+
+$(./scheme -st)
+html { background-color: var(--ansi16); color: var(--ansi17); }
+a { color: var(--ansi4); }
+a:visited { color: var(--ansi5); }
+a.permalink, a.tag { color: var(--ansi3); text-decoration: none; }
+a.permalink > code:target, *:target > a.permalink,
+a.tag:target { color: var(--ansi11); }
+pre .Ke { color: var(--ansi7); }
+pre .Ma { color: var(--ansi2); }
+pre .Co { color: var(--ansi4); }
+pre .St { color: var(--ansi6); }
+pre .Fo { color: var(--ansi14); }
+pre .Su { color: var(--ansi1); }
+</style>
+EOF
+
+opts=fragment
+[ "${man}" = "README.7" ] && opts=${opts},man=%N.html
+mandoc -T html -O ${opts} "${man}"
+
+for src; do
+	cat <<-EOF
+	<p>
+	<a href="${GitURL}/${src}">${src} in git</a>
+	EOF
+	./htagml -x -f htmltags "${src}"
+	./hilex -t -f html "${src}" | ./htagml -ip -f htmltags "${src}"
+done
diff --git a/bin/make.l b/bin/make.l
new file mode 100644
index 00000000..027fefa3
--- /dev/null
+++ b/bin/make.l
@@ -0,0 +1,132 @@
+/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+%option prefix="make"
+%option noyywrap
+
+%{
+#include "hilex.h"
+%}
+
+%s Assign Preproc
+%x Variable Shell
+
+ident [._[:alnum:]]+
+assign [+?:!]?=
+target [-._/?*\[\][:alnum:]]+
+operator [:!]|::
+
+%%
+	static int pop = INITIAL;
+	static int depth = 0;
+
+^"\t"+ {
+	BEGIN(pop = Shell);
+	return Normal;
+}
+<Shell>{
+	"\n" {
+		BEGIN(pop = INITIAL);
+		return Normal;
+	}
+	"\\\n" { return Normal; }
+	[^\\\n$]+|. { return Normal; }
+}
+
+[[:blank:]]+ { return Normal; }
+
+{operator} { return Operator; }
+
+"."(PHONY|PRECIOUS|SUFFIXES)/{operator}? {
+	return Keyword;
+}
+
+{target}/{operator} { return Ident; }
+
+^"."{ident} |
+^"-"?include {
+	BEGIN(pop = Preproc);
+	return Macro;
+}
+<Preproc>{
+	"\n" {
+		BEGIN(pop = INITIAL);
+		return Normal;
+	}
+	"\\\n""\t"? { return Normal; }
+
+	"\""[^""]*"\"" |
+	"<"[^>]*">" {
+		return String;
+	}
+
+	[!<>=]"="?|"||"|"&&" { return Operator; }
+	[0-9]+|"0x"[[:xdigit:]]+ { return Number; }
+	defined|make|empty|exists|target|commands|in { return Keyword; }
+}
+
+^{ident}/[[:blank:]]*{assign} {
+	return Ident;
+}
+
+{assign} {
+	BEGIN(pop = Assign);
+	return Operator;
+}
+<Assign>{
+	"\n" {
+		BEGIN(pop = INITIAL);
+		return Normal;
+	}
+	"\\\n""\t"? { return Escape; }
+	[^\\$[:space:]]+|. { return String; }
+}
+
+{target} { return Ident; }
+
+"#"([^\\\n]|"\\"[^\n]|"\\\n")* { return Comment; }
+
+<*>{
+	"$"("{"|"(")/[^$] {
+		depth++;
+		BEGIN(Variable);
+		yymore();
+	}
+	"$"("{"|"(") {
+		depth++;
+		BEGIN(Variable);
+		return Subst;
+	}
+	"$". { return Subst; }
+}
+<Variable>{
+	[^${}()]*"}"|")" {
+		if (!--depth) BEGIN(pop);
+		return Subst;
+	}
+	[^${}()]+ { return Subst; }
+}
+
+.|\n { return Normal; }
+
+%{
+	(void)yyunput;
+	(void)input;
+%}
+
+%%
+
+const struct Lexer LexMake = { yylex, &yyin, &yytext };
diff --git a/bin/man1/beef.1 b/bin/man1/beef.1
new file mode 100644
index 00000000..ea52cfa0
--- /dev/null
+++ b/bin/man1/beef.1
@@ -0,0 +1,91 @@
+.Dd August 28, 2019
+.Dt BEEF 1
+.Os
+.
+.Sh NAME
+.Nm beef
+.Nd Befunge-93 interpreter
+.
+.Sh SYNOPSIS
+.Nm
+.Op Ar file
+.
+.Sh DESCRIPTION
+.Nm
+is a Befunge-93 interpreter.
+If no
+.Ar file
+is provided,
+the program is read from standard input.
+.
+.Ss Befunge-93 Command Summary
+.Bl -tag -width "0-9" -compact
+.It \(dq
+toggle string mode
+.It 0-9
+push value
+.It +
+add
+.It -
+subtract
+.It *
+multiply
+.It /
+divide
+.It %
+modulo
+.It !
+not
+.It `
+greater than
+.It >
+right
+.It <
+left
+.It ^
+up
+.It v
+down
+.It ?
+random
+.It _
+horizontal (left) if
+.It |
+vertical (up) if
+.It :
+duplicate
+.It \e
+swap
+.It $
+drop
+.It .
+output integer
+.It ,
+output ASCII
+.It #
+bridge
+.It g
+get (y, x)
+.It p
+put (y, x) = v
+.It &
+input integer
+.It ~
+input ASCII
+.It @
+exit
+.El
+.
+.Sh EXIT STATUS
+.Nm
+exits with the top value left on the stack,
+or 0 if the stack is left empty.
+.
+.Sh STANDARDS
+.Rs
+.%A Chris Pressey
+.%Q Cat's Eye Technologies
+.%T Befunge-93
+.%D September, 1993
+.%U https://github.com/catseye/Befunge-93/blob/master/doc/Befunge-93.markdown
+.Re
diff --git a/bin/man1/bibsort.1 b/bin/man1/bibsort.1
new file mode 100644
index 00000000..07ed91ef
--- /dev/null
+++ b/bin/man1/bibsort.1
@@ -0,0 +1,40 @@
+.Dd February 16, 2021
+.Dt BIBSORT 1
+.Os
+.
+.Sh NAME
+.Nm bibsort
+.Nd reformat bibliography
+.
+.Sh SYNOPSIS
+.Nm
+.Op Ar file
+.
+.Sh DESCRIPTION
+.Nm
+reformats on standard output
+the
+.Em STANDARDS
+section of the
+.Xr mdoc 7
+manual page
+.Ar file
+or standard input.
+Bibliographic references
+are sorted by author last names,
+and formatted in an item list
+with macro lines appearing
+in the order they are formatted by
+.Xr mandoc 1 .
+Additionally,
+.Ic \&%N
+macros referencing RFC numbers
+are rewritten to
+.Ic \&%R
+macros
+and missing
+.Ic \&%U
+macros are added for RFCs.
+.
+.Sh EXAMPLES
+.Dl :%!bibsort
diff --git a/bin/man1/bit.1 b/bin/man1/bit.1
new file mode 100644
index 00000000..b91a10e1
--- /dev/null
+++ b/bin/man1/bit.1
@@ -0,0 +1,55 @@
+.Dd December 30, 2020
+.Dt BIT 1
+.Os
+.
+.Sh NAME
+.Nm bit
+.Nd a calculator
+.
+.Sh SYNOPSIS
+.Nm
+.
+.Sh DESCRIPTION
+.Nm
+is an integer calculator.
+Its syntax resembles that of C expressions,
+with the following changes:
+.
+.Bl -bullet
+.It
+Underscores are allowed in integer literals.
+.It
+The
+.Sy 0b
+prefix is used for binary literals.
+.It
+The
+.Sy ->
+operator is used for arithmetic shift.
+.It
+The unary
+.Sy &
+operator is equivalent to
+.Sy (1 << x) - 1 .
+.It
+The postfix operators
+.Sy K ,
+.Sy M ,
+.Sy G ,
+.Sy T
+are used as constant multipliers.
+.It
+The postfix operator
+.Sy $
+is of lowest precedence and is equivalent to
+wrapping the preceding expression in parentheses.
+.It
+Single-letter (lower case) variables
+can be assigned.
+The variable
+.Sy _
+stores the previous result.
+.El
+.
+.Sh SEE ALSO
+.Xr operator 7
diff --git a/bin/man1/bri.1 b/bin/man1/bri.1
new file mode 100644
index 00000000..54a02322
--- /dev/null
+++ b/bin/man1/bri.1
@@ -0,0 +1,44 @@
+.Dd September 7, 2018
+.Dt BRI 1
+.Os
+.
+.Sh NAME
+.Nm bri
+.Nd backlight brightness control
+.
+.Sh SYNOPSIS
+.Nm
+.Op Ar brightness
+.Nm
+.Cm +
+.Nm
+.Cm -
+.
+.Sh DESCRIPTION
+.Nm
+controls the backlight brightness on Linux.
+.
+.Pp
+With no argument,
+the current brightness is printed.
+With a numerical
+.Ar brightness
+argument,
+the brightness is set.
+.
+.Pp
+The
+.Cm +
+and
+.Cm -
+arguments
+may be repeated any number of times
+and adjust the brightness
+in increments of 16.
+.
+.Sh FILES
+.Bl -tag
+.It Pa /sys/class/backlight
+Files under the first subdirectory found
+are used to control the backlight brightness.
+.El
diff --git a/bin/man1/c.1 b/bin/man1/c.1
new file mode 100644
index 00000000..97384ebe
--- /dev/null
+++ b/bin/man1/c.1
@@ -0,0 +1,45 @@
+.Dd January  9, 2021
+.Dt C 1
+.Os
+.
+.Sh NAME
+.Nm c
+.Nd run C
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl t
+.Op Fl e Ar expr
+.Op Fl i Ar include
+.Op Ar stmts ...
+.
+.Sh DESCRIPTION
+The
+.Nm
+utility compiles and runs
+C statements wrapped in
+.Fn main
+with common includes.
+If no
+.Ar expr
+or
+.Ar stmts
+are provided,
+statements are read from standard input.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl e Ar expr
+Print the result of the C expression
+.Ar expr
+after executing
+.Ar stmts .
+.It Fl i Ar include
+Add the include file
+.Ar include .
+.It Fl t
+With
+.Fl e ,
+print the type of the expression.
+.El
diff --git a/bin/man1/dtch.1 b/bin/man1/dtch.1
new file mode 100644
index 00000000..e27713e1
--- /dev/null
+++ b/bin/man1/dtch.1
@@ -0,0 +1,67 @@
+.Dd August 12, 2019
+.Dt DTCH 1
+.Os
+.
+.Sh NAME
+.Nm dtch
+.Nd detached sessions
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl s
+.Ar name
+.Op Ar command ...
+.Nm
+.Fl a
+.Ar name
+.
+.Sh DESCRIPTION
+.Nm
+spawns a
+.Ar command
+in a detachable session.
+If no
+.Ar command
+is given,
+the value of
+.Ev SHELL
+is used.
+The
+.Nm
+process
+should be run as a background job
+or with
+.Xr nohup 1 .
+.
+.Pp
+To attach to an existing session,
+pass the
+.Fl a
+flag.
+To detach from the session,
+type
+.Ic ^Q .
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Attach to an existing session.
+.It Fl s
+Sink the output of
+.Ar command
+while detached.
+.El
+.
+.Sh FILES
+.Bl -tag -width Ds
+.It Pa ~/.dtch
+Directory of UNIX-domain sockets
+for each session.
+.El
+.
+.Sh EXAMPLES
+.Bd -literal -offset indent
+dtch foo vim &
+dtch -a foo
+.Ed
diff --git a/bin/man1/ever.1 b/bin/man1/ever.1
new file mode 100644
index 00000000..8cdab99b
--- /dev/null
+++ b/bin/man1/ever.1
@@ -0,0 +1,51 @@
+.Dd February 24, 2021
+.Dt EVER 1
+.Os
+.
+.Sh NAME
+.Nm ever
+.Nd watch files
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl iq
+.Ar
+.Ar command
+.Nm
+.Op Fl i
+.Ar
+.Fl -
+.Ar command
+.Op Ar argument ...
+.
+.Sh DESCRIPTION
+.Nm
+executes the
+.Ar command
+whenever
+.Ar file
+is modified.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl i
+Attach the
+.Ar file
+which was modified
+to the standard input of
+.Ar command .
+.It Fl q
+Suppress exit status output.
+.El
+.
+.Sh EXAMPLES
+.Dl ever ever.c make
+.Dl ever when.y ever.c -- make when ever
+.Dl ever -i ever.1 mandoc
+.
+.Sh CAVEATS
+.Nm
+does not support Linux
+since it uses
+.Xr kqueue 2 .
diff --git a/bin/man1/fbatt.1 b/bin/man1/fbatt.1
new file mode 100644
index 00000000..2d30cba7
--- /dev/null
+++ b/bin/man1/fbatt.1
@@ -0,0 +1,34 @@
+.Dd September 7, 2018
+.Dt FBATT 1
+.Os
+.
+.Sh NAME
+.Nm fbatt
+.Nd framebuffer battery indicator
+.
+.Sh SYNOPSIS
+.Nm
+.
+.Sh DESCRIPTION
+.Nm
+displays a battery charge indicator
+in the top-right corner
+of the Linux framebuffer.
+.
+.Sh ENVIRONMENT
+.Bl -tag
+.It Ev FRAMEBUFFER
+The framebuffer device path.
+.El
+.
+.Sh FILES
+.Bl -tag
+.It Pa /dev/fb0
+The default framebuffer device path.
+.It Pa /sys/class/power_supply
+The first subdirectory containing
+.Pa charge_full
+and
+.Pa charge_now
+is used to read the battery charge.
+.El
diff --git a/bin/man1/fbclock.1 b/bin/man1/fbclock.1
new file mode 100644
index 00000000..3195eb42
--- /dev/null
+++ b/bin/man1/fbclock.1
@@ -0,0 +1,36 @@
+.Dd September 7, 2018
+.Dt FBCLOCK 1
+.Os
+.
+.Sh NAME
+.Nm fbclock
+.Nd framebuffer clock
+.
+.Sh SYNOPSIS
+.Nm
+.
+.Sh DESCRIPTION
+.Nm
+displays a clock
+in the top-right corner
+of the Linux framebuffer.
+.
+.Sh ENVIRONMENT
+.Bl -tag
+.It Ev FONT
+Path to gzipped PSF file.
+.
+.It Ev FRAMEBUFFER
+The framebuffer device path.
+.El
+.
+.Sh FILES
+.Bl -tag
+.It Pa /dev/fb0
+The default framebuffer device path.
+.It Pa /usr/share/kbd/consolefonts/Lat2-Terminus16.psfu.gz
+The default font path.
+.El
+.
+.Sh SEE ALSO
+.Xr setfont 8
diff --git a/bin/man1/glitch.1 b/bin/man1/glitch.1
new file mode 100644
index 00000000..6562c4dc
--- /dev/null
+++ b/bin/man1/glitch.1
@@ -0,0 +1,77 @@
+.Dd September 7, 2018
+.Dt GLITCH 1
+.Os
+.
+.Sh NAME
+.Nm glitch
+.Nd PNG glitcher
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl cfimprxy
+.Op Fl a Ar filters
+.Op Fl d Ar filters
+.Op Fl o Ar file
+.Op Ar
+.
+.Sh DESCRIPTION
+.Nm
+misinterprets PNG files
+according to the options given
+to create natural glitch effects.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl a Ar filters
+Apply a pattern of comma-separated filters.
+Filters are
+.Cm none ,
+.Cm sub ,
+.Cm up ,
+.Cm average ,
+.Cm paeth .
+.
+.It Fl c
+Write to standard output.
+.
+.It Fl d Ar filters
+Declare a pattern of comma-separated filters.
+See
+.Fl a
+for list of filters.
+.
+.It Fl f
+Apply filtering in place of reconstruction.
+.
+.It Fl i
+Invert image data after filtering.
+.
+.It Fl m
+Mirror scanlines after filtering.
+.
+.It Fl o Ar file
+Write to
+.Ar file .
+.
+.It Fl p
+Use a broken Paeth predictor function.
+.
+.It Fl r
+Apply reconstruction in place of filtering.
+.
+.It Fl x
+Zero first pixel of each scanline after filtering.
+.
+.It Fl y
+Zero first scanline after filtering.
+.El
+.
+.Sh EXAMPLES
+.Dl glitch -m -a sub -d sub
+.
+.Sh SEE ALSO
+.Xr pngo 1
+.
+.Sh BUGS
+More wanted.
diff --git a/bin/man1/hilex.1 b/bin/man1/hilex.1
new file mode 100644
index 00000000..80b3155b
--- /dev/null
+++ b/bin/man1/hilex.1
@@ -0,0 +1,218 @@
+.Dd January 20, 2021
+.Dt HILEX 1
+.Os
+.
+.Sh NAME
+.Nm hilex
+.Nd syntax highlighter
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl t
+.Op Fl f Ar format
+.Op Fl l Ar lexer
+.Op Fl n Ar name
+.Op Fl o Ar opts
+.Op Ar file
+.
+.Sh DESCRIPTION
+The
+.Nm
+utility
+syntax highlights
+the contents of
+.Ar file
+or standard input
+and formats it on standard output.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width "-f format"
+.It Fl f Ar format
+Set the output format.
+See
+.Sx Output Formats .
+The default format is
+.Cm ansi .
+.
+.It Fl l Ar lexer
+Set the input lexer.
+See
+.Sx Input Lexers .
+The default input lexer is inferred from
+.Ar name
+or the first line of input.
+.
+.It Fl n Ar name
+Set the name used to infer the input lexer.
+The default is the final component of
+.Ar file .
+.
+.It Fl o Ar opts
+Set output format options.
+.Ar opts
+is a comma-separated list of options.
+Options for each output format are documented in
+.Sx Output Formats .
+.
+.It Fl t
+Default to the
+.Cm text
+input lexer if one cannot be inferred.
+.El
+.
+.Ss Output Formats
+.Bl -tag -width Ds
+.It Cm ansi
+Output ANSI terminal control sequences.
+If standard output is a terminal
+and standard input is not being read,
+output is piped to
+.Ev PAGER
+with
+.Ev LESS=FRX
+if it is not already set.
+.
+.It Cm html
+Output HTML
+.Sy span
+elements
+with the following classes:
+.Pp
+.Bl -hang -width "\&Op" -compact
+.It Sy \&Op
+operators
+.It Sy \&Nu
+numbers
+.It Sy \&Ke
+keywords
+.It Sy \&Id
+identifiers
+.It Sy \&Ma
+macros
+.It Sy \&Co
+comments
+.It Sy \&St
+strings
+.It Sy \&Es
+character escapes
+.It Sy \&Fo
+format strings
+.It Sy \&Su
+variable substitutions
+.El
+.Pp
+The options are as follows:
+.Bl -tag -width "title=..."
+.It Cm document
+Output an HTML document containing a
+.Sy pre
+element.
+.It Cm inline
+Output inline style attributes
+rather than classes.
+.It Cm pre
+Wrap the output in a
+.Sy pre
+element with the class
+.Sy hilex .
+.It Cm style Ns = Ns Ar url
+With
+.Cm document ,
+use the external stylesheet
+.Ar url .
+If unset,
+default styles are included in a
+.Sy style
+element.
+.It Cm tab Ns = Ns Ar n
+With
+.Cm document ,
+.Cm inline
+or
+.Cm pre ,
+set the
+.Sy tab-size
+property to
+.Ar n .
+.It Cm title Ns = Ns Ar ...
+With
+.Cm document ,
+set the
+.Sy title
+element text.
+The default title is the same as
+.Ar name .
+.El
+.
+.It Cm irc
+Output IRC formatting codes.
+The options are as follows:
+.Bl -tag -width "monospace"
+.It Cm monospace
+Use the IRCCloud monospace formatting code.
+.El
+.El
+.
+.Ss Input Lexers
+.Bl -tag -width Ds
+.It Cm c
+The C11 language,
+with minimal support for
+.Xr lex 1 ,
+.Xr yacc 1
+and Objective-C input.
+Inferred for
+.Pa *.[chlmy]
+files.
+.
+.It Cm make
+BSD
+.Xr make 1 .
+Inferred for
+.Pa Makefile ,
+.Pa *.mk
+and
+.Pa *.am
+files.
+.
+.It Cm mdoc
+The
+.Xr mdoc 7
+language.
+Inferred for
+.Pa *.[1-9]
+files
+and files starting with
+.Dq .Dd .
+.
+.It Cm sh
+POSIX
+.Xr sh 1 .
+Since lexical analysis of
+the shell command language
+is effectively impossible,
+this is best-effort only.
+Inferred for
+.Pa *.sh ,
+.Pa .profile ,
+.Pa .shrc
+files
+and files starting with
+.Dq #!/bin/sh .
+.
+.It Cm text
+Plain text.
+Inferred for
+.Pa *.txt
+files.
+.El
+.
+.Sh ENVIRONMENT
+.Bl -tag -width "PAGER"
+.It Ev PAGER
+The command to pipe ANSI output to
+if standard output is a terminal.
+The default is
+.Ev PAGER=less .
+.El
diff --git a/bin/man1/htagml.1 b/bin/man1/htagml.1
new file mode 100644
index 00000000..97e8f3f2
--- /dev/null
+++ b/bin/man1/htagml.1
@@ -0,0 +1,69 @@
+.Dd January 12, 2021
+.Dt HTAGML 1
+.Os
+.
+.Sh NAME
+.Nm htagml
+.Nd format tagged file as HTML
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl ip | x
+.Op Fl f Ar tagsfile
+.Ar file
+.
+.Sh DESCRIPTION
+The
+.Nm
+utility formats a file tagged with
+.Xr ctags 1
+as HTML.
+Tags are output as fragment hyperlinks
+with the class
+.Qq tag .
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl f Ar tagsfile
+Read the tag descriptions from a file called
+.Ar tagsfile .
+The default behavior is
+to read them from a file called
+.Pa tags .
+.It Fl i
+Assume
+.Ar file
+has been pre-formatted
+on standard input,
+such as by a syntax highlighter.
+Only tag hyperlinks are added.
+.It Fl p
+Wrap the output in a
+.Sy pre
+element.
+.It Fl x
+Instead produce an index of tags
+ordered by their occurrence in
+.Ar file .
+The index is formatted as a
+.Sy ul
+element with the class
+.Qq index .
+.El
+.
+.Sh FILES
+.Bl -tag -width Ds
+.It Pa tags
+default input tags file
+.El
+.
+.Sh EXAMPLES
+.Bd -literal -offset indent
+ctags htagml.c && htagml htagml.c
+hilex -f html htagml.c | htagml -i htagml.c
+.Ed
+.
+.Sh SEE ALSO
+.Xr ctags 1 ,
+.Xr hilex 1
diff --git a/bin/man1/modem.1 b/bin/man1/modem.1
new file mode 100644
index 00000000..a4bbc3f1
--- /dev/null
+++ b/bin/man1/modem.1
@@ -0,0 +1,31 @@
+.Dd December  8, 2020
+.Dt MODEM 1
+.Os
+.
+.Sh NAME
+.Nm modem
+.Nd fixed baud rate wrapper
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl r Ar rate
+.Ar command ...
+.
+.Sh DESCRIPTION
+.Nm
+runs the
+.Ar command
+in a new PTY
+with a fixed baud rate.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl r Ar rate
+Set the baud rate.
+The default is 19200.
+.El
+.
+.Sh BUGS
+Window size changes are not propagated
+to the child PTY.
diff --git a/bin/man1/mtags.1 b/bin/man1/mtags.1
new file mode 100644
index 00000000..57856ba0
--- /dev/null
+++ b/bin/man1/mtags.1
@@ -0,0 +1,76 @@
+.Dd January 20, 2021
+.Dt MTAGS 1
+.Os
+.
+.Sh NAME
+.Nm mtags
+.Nd miscellaneous tags
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl a
+.Op Fl f Ar tagsfile
+.Ar
+.
+.Sh DESCRIPTION
+The
+.Nm
+utility
+makes a
+.Pa tags
+file for
+.Xr ex 1
+from the specified
+.Xr make 1 ,
+.Xr mdoc 7
+.Xr sh 1
+sources.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Append to
+.Pa tags
+file.
+.It Fl f Ar tagsfile
+Place the tag descriptions
+in a file called
+.Ar tagsfile .
+The default behaviour is
+to place them in a file called
+.Pa tags .
+.El
+.
+.Pp
+Files whose names are
+.Pa Makefile
+or end in
+.Pa .mk
+are assumed to be
+.Xr make 1
+files.
+Files whose names end in
+.Pa .[1-9]
+are assumed to be
+.Xr mdoc 7
+files.
+Files whose names are
+.Pa .profile ,
+.Pa .shrc
+or end in
+.Pa .sh
+are assumed to be
+.Xr sh 1
+files.
+.
+.Sh FILES
+.Bl -tag -width Ds
+.It Pa tags
+default output tags file
+.El
+.
+.Sh SEE ALSO
+.Xr ctags 1 ,
+.Xr ex 1 ,
+.Xr vi 1
diff --git a/bin/man1/nudge.1 b/bin/man1/nudge.1
new file mode 100644
index 00000000..3ca4294a
--- /dev/null
+++ b/bin/man1/nudge.1
@@ -0,0 +1,44 @@
+.Dd September  4, 2020
+.Dt NUDGE 1
+.Os
+.
+.Sh NAME
+.Nm nudge
+.Nd terminal vibrator
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl f Ar file
+.Op Fl n Ar count
+.Op Fl s Ar shake
+.Op Fl t Ar delay
+.
+.Sh DESCRIPTION
+The
+.Nm
+utility
+nudges the terminal.
+An
+.Xr xterm 1
+compatible terminal is required.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl f Ar file
+Open the terminal named by
+.Ar file .
+The default is
+.Pa /dev/tty .
+.It Fl n Ar count
+Set the number of times
+to nudge the terminal.
+The default is 2.
+.It Fl s Ar shake
+Set the shake intensity in pixels.
+The default is 10.
+.It Fl t Ar delay
+Set the interval between shakes
+in milliseconds.
+The default is 20.
+.El
diff --git a/bin/man1/order.1 b/bin/man1/order.1
new file mode 100644
index 00000000..89fcbda5
--- /dev/null
+++ b/bin/man1/order.1
@@ -0,0 +1,38 @@
+.Dd July 18, 2020
+.Dt ORDER 1
+.Os
+.
+.Sh NAME
+.Nm order
+.Nd operator precedence
+.
+.Sh SYNOPSIS
+.Nm
+.Op Ar expr ...
+.
+.Sh DESCRIPTION
+.Nm
+parses C expressions
+and prints them with parentheses
+according to the precedence rules in
+.Xr operator 7 .
+If no
+.Ar expr
+are given,
+an expression is read
+from standard input.
+.
+.Sh EXAMPLES
+.Bd -literal
+$ order 'a & b << 1'
+(a & (b << 1))
+.Ed
+.
+.Sh SEE ALSO
+.Xr operator 7
+.
+.Sh CAVEATS
+.Nm
+does not support the
+.Sy (type)
+operator.
diff --git a/bin/man1/pbd.1 b/bin/man1/pbd.1
new file mode 100644
index 00000000..f0665891
--- /dev/null
+++ b/bin/man1/pbd.1
@@ -0,0 +1,66 @@
+.Dd February  9, 2021
+.Dt PBD 1
+.Os
+.
+.Sh NAME
+.Nm pbd
+.Nd macOS pasteboard daemon
+.
+.Sh SYNOPSIS
+.Nm Op Fl s | c | p | o Ar url
+.
+.Sh DESCRIPTION
+.Nm
+is a daemon which pipes into macOS
+.Xr pbcopy 1 ,
+from
+.Xr pbpaste 1
+and invokes
+.Xr open 1
+in response to messages
+sent over TCP port 7062.
+.
+.Pp
+The socket can be forwarded through
+.Xr ssh 1
+and the flags can be used remotely
+to access the local pasteboard
+and open URLs.
+.
+.Pp
+Forwarding can be configured with:
+.Pp
+.Dl RemoteForward 7062 127.0.0.1:7062
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl c
+Behave as
+.Xr pbcopy 1 .
+.It Fl o Ar url
+Behave as
+.Xr open 1 .
+.It Fl p
+Behave as
+.Xr pbpaste 1 .
+.It Fl s
+Run the server.
+This is the default.
+.El
+.Pp
+ACAB.
+.
+.Sh EXAMPLES
+.Bd -literal -offset indent
+pbd &
+ssh -R 7062:127.0.0.1:7062 tux.local
+pbd -p
+.Ed
+.
+.Sh SEE ALSO
+.Xr open 1 ,
+.Xr pbcopy 1 ,
+.Xr pbpaste 1 ,
+.Xr ssh 1 ,
+.Xr ssh_config 5
diff --git a/bin/man1/pngo.1 b/bin/man1/pngo.1
new file mode 100644
index 00000000..cec13160
--- /dev/null
+++ b/bin/man1/pngo.1
@@ -0,0 +1,56 @@
+.Dd September 17, 2018
+.Dt PNGO 1
+.Os
+.
+.Sh NAME
+.Nm pngo
+.Nd PNG optimizer
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl cv
+.Op Fl o Ar file
+.Op Ar
+.
+.Sh DESCRIPTION
+.Nm
+optimizes PNG files for size.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl c
+Write to standard output.
+.It Fl o Ar file
+Write to
+.Ar file .
+.It Fl v
+Output PNG header information.
+.El
+.
+.Pp
+.Nm
+performs the following optimizations:
+.Bl -bullet
+.It
+Discard ancillary chunks.
+.It
+Discard unnecessary alpha channel.
+.It
+Convert unnecessary truecolor to grayscale.
+.It
+Palletize color and alpha if possible.
+.It
+Reduce bit depth if possible.
+.It
+Apply a simple filter heuristic.
+.It
+Apply zlib's best compresion.
+.El
+.
+.Sh SEE ALSO
+.Xr glitch 1
+.
+.Sh CAVEATS
+.Nm
+does not support interlaced PNGs.
diff --git a/bin/man1/psf2png.1 b/bin/man1/psf2png.1
new file mode 100644
index 00000000..db74c6e2
--- /dev/null
+++ b/bin/man1/psf2png.1
@@ -0,0 +1,53 @@
+.Dd September 28, 2018
+.Dt PSF2PNG 1
+.Os
+.
+.Sh NAME
+.Nm psf2png
+.Nd PSF2 to PNG renderer
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl b Ar bg
+.Op Fl c Ar cols
+.Op Fl f Ar fg
+.Op Fl s Ar str
+.Op Ar file
+.
+.Sh DESCRIPTION
+.Nm
+renders the PSF2 font
+.Ar file
+or standard input
+to PNG
+on standard output.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl b Ar bg
+Use
+.Ar bg
+(hexadecimal RGB)
+as background color.
+The default background color is black.
+.It Fl c Ar cols
+Arrange glyphs in
+.Ar cols
+columns.
+The default number of columns is 32.
+.It Fl f Ar fg
+Use
+.Ar fg
+(hexadecimal RGB)
+as foreground color.
+The default foreground color is white.
+.It Fl s Ar str
+Render glyphs for string
+.Ar str
+rather than all glyphs.
+.El
+.
+.Sh SEE ALSO
+.Xr pngo 1 ,
+.Xr psfed 1
diff --git a/bin/man1/psfed.1 b/bin/man1/psfed.1
new file mode 100644
index 00000000..3fbc4710
--- /dev/null
+++ b/bin/man1/psfed.1
@@ -0,0 +1,166 @@
+.Dd January 14, 2019
+.Dt PSFED 1
+.Os
+.
+.Sh NAME
+.Nm psfed
+.Nd PSF2 font editor
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl H Ar height
+.Op Fl g Ar glyphs
+.Op Fl h Ar height
+.Op Fl w Ar width
+.Ar file
+.
+.Sh DESCRIPTION
+.Nm
+is a PSF2 font editor
+for the Linux framebuffer.
+.
+.Pp
+The arguments are as follows:
+.
+.Bl -tag -width Ds
+.It Fl H Ar height
+Modify the height of an existing font.
+Only increasing the height is allowed.
+.
+.It Fl g Ar glyphs
+Set the number of glyphs in a new font.
+The default number of glyphs is 256.
+.
+.It Fl h Ar height
+Set the height of a new font.
+The default height is 16.
+.
+.It Fl w Ar width
+Set the width of a new font.
+The default width is 8.
+.El
+.
+.Ss Normal Mode
+In normal mode,
+each glyph is displayed in a grid.
+.
+.Pp
+.Bl -tag -width Ds -compact
+.It Ic q
+Quit.
+.Nm
+will ask for confirmation
+if the font has been modified
+since the last write.
+.
+.It Ic w
+Write font to
+.Ar file .
+.
+.It Ic - Ic +
+Adjust display scale.
+.
+.It Ic h Ic l
+Select previous/next glyph.
+.
+.It Ic k Ic j
+Select glyph in previous/next row.
+.
+.It Ic f
+Select glyph of next input character.
+.
+.It Ic '
+Return to previously selected glyph.
+.
+.It Ic y
+Copy selected glyph.
+.
+.It Ic e
+Edit selected glyph in
+.Sx Edit Mode .
+.
+.It Ic i
+Enter
+.Sx Preview Mode .
+.El
+.
+.Ss Edit Mode
+In edit mode,
+the selected glyph is displayed for editing
+surrounded by a checked border.
+The glyph is also displayed unscaled
+in the bottom-right corner.
+.
+.Pp
+.Bl -tag -width Ds -compact
+.It Ic ESC
+Return to
+.Sx Normal Mode .
+.
+.It Ic - Ic +
+Adjust display scale.
+.
+.It Ic g Ic G
+Toggle guide on selected column/row.
+.
+.It Ic h Ic l
+Select previous/next bit in row.
+.
+.It Ic k Ic j
+Select previous/next bit in column.
+.
+.It Ic SPACE
+Flip selected bit.
+.
+.It Ic r
+Invert glyph.
+.
+.It Ic H Ic L
+Move glyph left/right.
+.
+.It Ic K Ic J
+Move glyph up/down.
+.
+.It Ic p
+Paste the copied glyph.
+.
+.It Ic u
+Revert glyph to initial state.
+.El
+.
+.Ss Preview Mode
+In preview mode,
+arbitrary text may be entered
+for preview.
+Press
+.Ic ESC
+to return to
+.Sx Normal Mode .
+.
+.Sh ENVIRONMENT
+.Bl -tag -width FRAMEBUFFER
+.It Ev FRAMEBUFFER
+The framebuffer device path.
+The default path is
+.Pa /dev/fb0 .
+.El
+.
+.Sh SEE ALSO
+.Xr psfaddtable 1 ,
+.Xr psfgettable 1 ,
+.Xr psfstriptable 1 ,
+.Xr setfont 8
+.
+.Sh CAVEATS
+.Nm
+does not support Unicode tables.
+Use
+.Xr psfaddtable 1
+to add Unicode tables
+to fonts created by
+.Nm .
+.
+.Sh BUGS
+.Nm
+makes no attempt to convert header fields
+to and from little-endian format.
diff --git a/bin/man1/ptee.1 b/bin/man1/ptee.1
new file mode 100644
index 00000000..04f9cdac
--- /dev/null
+++ b/bin/man1/ptee.1
@@ -0,0 +1,40 @@
+.Dd July 17, 2019
+.Dt PTEE 1
+.Os
+.
+.Sh NAME
+.Nm ptee
+.Nd tee for PTYs
+.
+.Sh SYNOPSIS
+.Nm
+.Ar command ...
+.Cm >
+.Ar file
+.
+.Sh DESCRIPTION
+.Nm
+runs
+.Ar command
+in a new PTY
+which is mirrored to
+the current PTY
+and standard output.
+Standard output must be redirected
+to a file or pipe.
+.
+.Pp
+Type
+.Ic ^S
+to toggle writing to standard output.
+Type
+.Ic ^Q
+to write the media copy sequence for
+.Xr shotty 1 .
+.
+.Sh SEE ALSO
+.Xr tee 1
+.
+.Sh BUGS
+Window size changes are not propagated
+to the child PTY.
diff --git a/bin/man1/relay.1 b/bin/man1/relay.1
new file mode 100644
index 00000000..402c4726
--- /dev/null
+++ b/bin/man1/relay.1
@@ -0,0 +1,48 @@
+.Dd April 28, 2019
+.Dt RELAY 1
+.Os
+.
+.Sh NAME
+.Nm relay
+.Nd IRC relay bot
+.
+.Sh SYNOPSIS
+.Nm
+.Ar host
+.Ar port
+.Ar nick
+.Ar chan
+.
+.Sh DESCRIPTION
+.Nm
+is one half of an IRC relay pair.
+It connects to
+.Ar host Ns : Ns Ar port
+over TLS
+as
+.Ar nick
+and joins
+.Ar chan .
+.
+.Pp
+.Nm
+outputs messages from
+.Ar chan
+to standard output
+and sends messages to
+.Ar chan
+from standard input.
+Two
+.Nm
+processes can be connected with
+.Xr mkfifo 1 .
+.
+.Sh EXAMPLES
+.Bd -literal -offset indent
+mkfifo a b
+relay a.example.com 6697 relay '#example' <>a >b
+relay b.example.com 6697 relay '#example' <>b >a
+.Ed
+.
+.Sh SEE ALSO
+.Xr mkfifo 1
diff --git a/bin/man1/scheme.1 b/bin/man1/scheme.1
new file mode 100644
index 00000000..9f72d945
--- /dev/null
+++ b/bin/man1/scheme.1
@@ -0,0 +1,59 @@
+.Dd February  6, 2021
+.Dt SCHEME 1
+.Os
+.
+.Sh NAME
+.Nm scheme
+.Nd color scheme
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl Xacghilmstx
+.Op Fl p Ar n
+.
+.Sh DESCRIPTION
+.Nm
+generates a color scheme
+and outputs it in a number of formats.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl X
+Output Xresources for
+.Xr xterm 1 .
+.It Fl a
+Generate the 16 ANSI colors.
+This is the default.
+.It Fl c
+Output a C enum.
+.It Fl g
+Output a swatch PNG.
+.It Fl h
+Output floating point HSV.
+.It Fl i
+Swap black and white.
+.It Fl l
+Output Linux console OSC sequences.
+.It Fl m
+Output a
+.Xr mintty 1
+theme.
+Use with
+.Fl t .
+.It Fl p Ar n
+Generate only the color
+.Ar n .
+.It Fl s
+Output CSS
+for classes named
+.Sy fg Ns Ar n
+and
+.Sy bg Ns Ar n .
+.It Fl t
+Generate the 16 ANSI colors as well as
+background, foreground, bold, selection and cursor colors.
+.It Fl x
+Output hexadecimal RGB.
+This is the default.
+.El
diff --git a/bin/man1/shotty.1 b/bin/man1/shotty.1
new file mode 100644
index 00000000..d5eaa780
--- /dev/null
+++ b/bin/man1/shotty.1
@@ -0,0 +1,92 @@
+.Dd November 25, 2019
+.Dt SHOTTY 1
+.Os
+.
+.Sh NAME
+.Nm shotty
+.Nd terminal capture
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl Bdns
+.Op Fl b Ar bg
+.Op Fl f Ar fg
+.Op Fl h Ar rows
+.Op Fl w Ar cols
+.Op Ar file
+.
+.Sh DESCRIPTION
+.Nm
+interprets terminal output from
+.Ar file
+or standard input
+and produces HTML
+.Sy <pre>
+on standard output.
+.
+.Pp
+Terminal output
+can be captured with
+.Xr ptee 1 .
+.Nm
+targets compatibility with
+.Ev TERM Ns = Ns Cm xterm
+and
+.Ev TERM Ns = Ns Cm xterm-256color
+as used by
+.Xr ncurses 3 .
+A snapshot of the terminal
+is output each time
+a media copy sequence occurs,
+or once at the end of the capture.
+.
+.Pp
+HTML output uses the classes
+.Sy bg Ns Va n
+and
+.Sy fg Ns Va n ,
+and inline styles for
+bold, italic and underline.
+CSS for colors can be generated with
+.Xr scheme 1 .
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width "-w cols"
+.It Fl B
+Replace bold with bright colors.
+.
+.It Fl b Ar bg
+Set the default background color.
+The default value is 0 (black).
+.
+.It Fl d
+Output the terminal state
+following each control sequence.
+.
+.It Fl f Ar fg
+Set the default foreground color.
+The default value is 7 (white).
+.
+.It Fl h Ar rows
+Set the terminal height.
+The default value is 24.
+.
+.It Fl n
+Do not show the cursor.
+.
+.It Fl s
+Set the terminal size
+from the current terminal size.
+.
+.It Fl w Ar cols
+Set the terminal width.
+The default value is 80.
+.El
+.
+.Sh EXAMPLES
+.Dl ptee htop | shotty -s > htop.html
+.
+.Sh SEE ALSO
+.Xr ptee 1 ,
+.Xr scheme 1
diff --git a/bin/man1/sup.1 b/bin/man1/sup.1
new file mode 100644
index 00000000..4b266e06
--- /dev/null
+++ b/bin/man1/sup.1
@@ -0,0 +1,48 @@
+.Dd February 21, 2021
+.Dt SUP 1
+.Os
+.
+.Sh NAME
+.Nm sup
+.Nd single-use password
+.
+.Sh SYNOPSIS
+.Nm
+.Ar service
+.Op Ar email
+.
+.Sh DESCRIPTION
+The
+.Nm
+utility
+sets a random single-use password
+for a service using the
+.Dq forgot password
+or
+.Dq password reset
+flow.
+The password is copied to the clipboard
+and the service login page is opened.
+For passwordless services
+with email-based authentication,
+the emailed login link is opened.
+.
+.Pp
+The following services are supported:
+.Cm asciinema ,
+.Cm discogs ,
+.Cm freebsdbugzilla ,
+.Cm liberapay ,
+.Cm lobsters ,
+.Cm tildenews .
+.
+.Pp
+The
+.Nm
+utility requires
+.Xr curl 1 ,
+.Xr git-fetch-email 1 ,
+.Xr openssl 1 ,
+.Xr pbcopy 1
+and
+.Xr open 1 .
diff --git a/bin/man1/title.1 b/bin/man1/title.1
new file mode 100644
index 00000000..43ecc5e2
--- /dev/null
+++ b/bin/man1/title.1
@@ -0,0 +1,51 @@
+.Dd September 10, 2019
+.Dt TITLE 1
+.Os
+.
+.Sh NAME
+.Nm title
+.Nd page titles
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl v
+.Op Fl x Ar pattern
+.Op Ar url
+.
+.Sh DESCRIPTION
+.Nm
+fetches HTML page titles
+over HTTP and HTTPS.
+.Nm
+scans standard input for URLs
+and writes their titles to standard output.
+If a
+.Ar url
+argument is given,
+.Nm
+exits after fetching its title.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl x Ar pattern
+Exclude URLs matching
+.Ar pattern ,
+which is a modern regular expression.
+See
+.Xr re_format 7 .
+.It Fl v
+Enable
+.Xr libcurl 3
+verbose output.
+.El
+.
+.Sh EXAMPLES
+.Bd -literal -offset indent
+mkfifo snarf titles
+relay irc.example.org 6697 snarf '#example' <>titles >snarf
+title <snarf >titles
+.Ed
+.
+.Sh SEE ALSO
+.Xr relay 1
diff --git a/bin/man1/typer.1 b/bin/man1/typer.1
new file mode 100644
index 00000000..dd1108d1
--- /dev/null
+++ b/bin/man1/typer.1
@@ -0,0 +1,74 @@
+.Dd April 28, 2021
+.Dt TYPER 1
+.Os
+.
+.Sh NAME
+.Nm typer
+.Nd type all day
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl CPRv
+.Op Fl c Ar cert
+.Op Fl n Ar nick
+.Op Fl p Ar port
+.Op Fl u Ar user
+.Ar host
+.Ar chan
+.
+.Sh DESCRIPTION
+.Nm
+is an IRC bot
+that types all day long.
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl C
+Copy
+.Nm .
+Type whenever anyone else is typing.
+.It Fl P
+Request the
+.Sy causal.agency/passive
+vendor-specific capability.
+.It Fl R
+Reverse
+.Nm .
+Send other users' typing indicators
+as regular messages for all to see.
+.It Fl c Ar cert
+Use the TLS client certificate
+and private key loaded from
+.Ar cert .
+.It Fl n Ar nick
+Set the nickname.
+The default is
+.Nm .
+.It Fl p Ar port
+Connect to
+.Ar port .
+The default is 6697.
+.It Fl u Ar user
+Set the username.
+The default is
+.Nm .
+.It Fl v
+Log IRC protocol to standard error.
+.It Ar host
+Connect to
+.Ar host .
+.It Ar chan
+Type in the channel
+.Ar chan .
+.El
+.
+.Sh STANDARDS
+.Bl -item
+.It
+.Rs
+.%A MuffinMedic
+.%A James Wheare
+.%T IRCv3 typing client tag
+.%I IRCv3 Working Group
+.%U https://ircv3.net/specs/client-tags/typing
+.Re
+.El
diff --git a/bin/man1/up.1 b/bin/man1/up.1
new file mode 100644
index 00000000..189020de
--- /dev/null
+++ b/bin/man1/up.1
@@ -0,0 +1,80 @@
+.Dd February  7, 2021
+.Dt UP 1
+.Os
+.
+.Sh NAME
+.Nm up
+.Nd upload file
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl h
+.Op Ar file
+.
+.Nm
+.Fl c | t
+.Ar command ...
+.
+.Nm
+.Fl s
+.
+.Sh DESCRIPTION
+.Nm
+uploads a file
+to temp.causal.agency with
+.Xr scp 1 .
+If no
+.Ar file
+is provided,
+standard input is read
+and uploaded as text.
+.
+.Pp
+The destination file name
+is chosen using
+.Xr date 1
+and
+.Xr openssl 1
+.Cm rand .
+The URL of the uploaded file is printed
+and copied to the pasteboard with
+.Xr pbcopy 1
+if available.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl c
+Run a command
+to produce a text file for upload.
+.It Fl h
+Use
+.Xr hilex 1
+to produce an HTML file for upload.
+.It Fl s
+Use
+.Xr screencapture 1
+or
+.Xr scrot 1
+to produce a PNG file for upload.
+The file is optimized by
+.Xr pngo 1
+if available.
+.It Fl t
+Run a command with
+.Xr ptee 1
+and
+.Xr shotty 1
+to produce an HTML file for upload.
+.El
+.
+.Pp
+Any arguments after
+.Ql \-\-
+are passed to
+.Xr hilex 1
+and
+.Xr screencapture 1
+or
+.Xr scrot 1 ,
+respectively.
diff --git a/bin/man1/when.1 b/bin/man1/when.1
new file mode 100644
index 00000000..0b473573
--- /dev/null
+++ b/bin/man1/when.1
@@ -0,0 +1,76 @@
+.Dd July 24, 2019
+.Dt WHEN 1
+.Os
+.
+.Sh NAME
+.Nm when
+.Nd date calculator
+.
+.Sh SYNOPSIS
+.Nm
+.Op Ar expr
+.
+.Sh DESCRIPTION
+.Nm
+is a date calculator.
+If no
+.Ar expr
+is given,
+expressions are read
+from standard input.
+.
+.Pp
+The grammar is as follows:
+.Bl -tag -width Ds
+.It Sy \&.
+Today's date.
+.
+.It Ar month Ar date Op Ar year
+A full date,
+or a date in the current year.
+.Ar month
+must be at least three letters.
+.
+.It Ar day
+A day of the week
+in the current week.
+.Ar day
+must be at least three letters.
+.
+.It Sy < Ar date
+The date one week before.
+.
+.It Sy > Ar date
+The date one week after.
+.
+.It Ar date Sy + Ar interval
+The date after some interval.
+.
+.It Ar date Sy - Ar interval
+The date before some interval.
+.
+.It Ar date Sy - Ar date
+The interval between two dates.
+.
+.It Ar num Sy d
+A number of days.
+.
+.It Ar num Sy w
+A number of weeks.
+.
+.It Ar num Sy m
+A number of months.
+.
+.It Ar num Sy y
+A number of years.
+.El
+.
+.Sh EXAMPLES
+.Bl -tag -width "Dec 25 - ."
+.It Ic Dec 25 - \&.
+How long until Christmas.
+.It Ic >Fri
+The date next Friday.
+.It Ic \&. + 2w
+Your last day at work.
+.El
diff --git a/bin/man1/xx.1 b/bin/man1/xx.1
new file mode 100644
index 00000000..d38789a7
--- /dev/null
+++ b/bin/man1/xx.1
@@ -0,0 +1,68 @@
+.Dd September 7, 2018
+.Dt XX 1
+.Os
+.
+.Sh NAME
+.Nm xx
+.Nd hexdump
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl arsz
+.Op Fl c Ar cols
+.Op Fl g Ar group
+.Op Fl p Ar count
+.Op Ar file
+.
+.Sh DESCRIPTION
+.Nm
+dumps the contents of a
+.Ar file
+or standard input
+in hexadecimal format.
+.
+.Pp
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl a
+Toggle ASCII output.
+.
+.It Fl c Ar cols
+Output
+.Ar cols
+bytes per line.
+The default
+.Ar cols
+is 16.
+.
+.It Fl g Ar group
+Output extra space after every
+.Ar group
+bytes.
+The default
+.Ar group
+is 8.
+.
+.It Fl p Ar count
+Output a blank line after every
+.Ar count
+bytes.
+.Ar count
+must be a multiple of
+.Ar cols .
+.
+.It Fl r
+Reverse hexdump.
+Read hexadecimal input
+and write byte output.
+.
+.It Fl s
+Toggle offset output.
+.
+.It Fl z
+Skip output of lines containing only zeros.
+.El
+.
+.Sh SEE ALSO
+.Xr hexdump 1 ,
+.Xr xxd 1
diff --git a/bin/man3/png.3 b/bin/man3/png.3
new file mode 100644
index 00000000..accffbd7
--- /dev/null
+++ b/bin/man3/png.3
@@ -0,0 +1,90 @@
+.Dd July 25, 2019
+.Dt PNG 3
+.Os
+.
+.Sh NAME
+.Nm png
+.Nd basic PNG output
+.
+.Sh SYNOPSIS
+.In png.h
+.
+.Ft void
+.Fo pngHead
+.Fa "FILE *file"
+.Fa "uint32_t width"
+.Fa "uint32_t height"
+.Fa "uint8_t depth"
+.Fa "uint8_t color"
+.Fc
+.
+.Ft void
+.Fn pngPalette "FILE *file" "const uint8_t *pal" "uint32_t len"
+.
+.Ft void
+.Fn pngData "FILE *file" "const uint8_t *data" "uint32_t len"
+.
+.Ft void
+.Fn pngTail "FILE *file"
+.
+.Sh DESCRIPTION
+The
+.Fn pngHead
+function
+writes the
+.Sy IHDR
+chunk to
+.Fa file .
+The
+.Fa color
+parameter can be one of
+.Dv PNGGrayscale ,
+.Dv PNGTruecolor
+optionally
+.Em or Ns 'ed
+with
+.Dv PNGAlpha ,
+or
+.Dv PNGIndexed .
+.
+.Pp
+The
+.Fn pngPalette
+function
+writes the
+.Sy PLTE
+chunk to
+.Fa file .
+.
+.Pp
+The
+.Fn pngData
+function
+writes the
+.Sy IDAT
+chunk to
+.Fa file
+without compression.
+The constants
+.Dv PNGNone ,
+.Dv PNGSub ,
+.Dv PNGUp ,
+.Dv PNGAverage ,
+.Dv PNGPaeth
+are defined
+for use in PNG data.
+.
+.Pp
+The
+.Fn pngTail
+function
+writes the
+.Sy IEND
+chunk to
+.Fa file .
+.
+.Sh ERRORS
+Any errors from writing to
+.Fa file
+are handled by calling
+.Xr err 3 .
diff --git a/bin/man6/freecell.6 b/bin/man6/freecell.6
new file mode 100644
index 00000000..0e485a16
--- /dev/null
+++ b/bin/man6/freecell.6
@@ -0,0 +1,50 @@
+.Dd April 17, 2021
+.Dt FREECELL 6
+.Os
+.
+.Sh NAME
+.Nm freecell
+.Nd patience game
+.
+.Sh SYNOPSIS
+.Nm
+.Op Fl d Ar delay
+.Op Fl n Ar game
+.
+.Sh DESCRIPTION
+.Nm
+is a terminal FreeCell patience game.
+The arguments are as follows:
+.Bl -tag -width Ds
+.It Fl d Ar delay
+Set the delay in milliseconds
+between queued moves.
+The default is 50.
+.It Fl n Ar game
+Select the game number to play.
+.El
+.
+.Pp
+Moves are performed
+by typing a sequence of two keys.
+To automatically move a card
+to a free cell,
+type the same key twice.
+The keys are as follows:
+.Bl -tag -width Ds
+.It Ic Escape
+Cancel a pending move.
+.It Ic u , Backspace
+Undo the previous move.
+.It Ic 1 , 2 , 3 , 4
+Select the cells.
+.It Ic q , w , e , r , a , s , d , f
+Select the tableau cascades.
+.It Ic _ , Space
+Manually move
+the selected card
+to the foundations.
+.It Ic Shift
+Move a single card
+to an empty tableau cascade.
+.El
diff --git a/bin/mdoc.l b/bin/mdoc.l
new file mode 100644
index 00000000..a31b6a2e
--- /dev/null
+++ b/bin/mdoc.l
@@ -0,0 +1,65 @@
+/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+%option prefix="mdoc"
+%option noyywrap
+
+%{
+#include "hilex.h"
+%}
+
+%s MacroLine
+
+%%
+
+[[:blank:]]+ { return Normal; }
+
+^"." {
+	BEGIN(MacroLine);
+	return Keyword;
+}
+
+^".\\\"".* { return Comment; }
+
+<MacroLine>{
+	"\n" {
+		BEGIN(0);
+		return Normal;
+	}
+
+	%[ABCDIJNOPQRTUV]|A[cdnopqrt]|B[cdfkloqtx]|Br[coq]|Bsx|C[dm]|D[1bcdloqtvx] |
+	E[cdfklmnorsvx]|F[acdlnortx]|Hf|I[cnt]|L[bikp]|M[st]|N[dmosx]|O[copstx] |
+	P[acfopq]|Q[cloq]|R[esv]|S[chmoqstxy]|T[an]|U[dx]|V[at]|X[cor] {
+		return Keyword;
+	}
+
+	"\""([^""]|"\\\"")*"\"" { return String; }
+}
+
+"\\"(.|"("..|"["[^]]*"]") { return String; }
+
+[^.\\""[:space:]]+ { return Normal; }
+
+.|\n { return Normal; }
+
+%{
+	(void)yyunput;
+	(void)input;
+%}
+
+%%
+
+const struct Lexer LexMdoc = { yylex, &yyin, &yytext };
diff --git a/bin/modem.c b/bin/modem.c
new file mode 100644
index 00000000..2133ae08
--- /dev/null
+++ b/bin/modem.c
@@ -0,0 +1,102 @@
+/* Copyright (C) 2018  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <poll.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+#include <sysexits.h>
+#include <termios.h>
+#include <unistd.h>
+
+#if defined __FreeBSD__
+#include <libutil.h>
+#elif defined __linux__
+#include <pty.h>
+#else
+#include <util.h>
+#endif
+
+typedef unsigned uint;
+typedef unsigned char byte;
+
+static struct termios saveTerm;
+static void restoreTerm(void) {
+	tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm);
+}
+
+int main(int argc, char *argv[]) {
+	int error;
+
+	uint baudRate = 19200;
+	for (int opt; 0 < (opt = getopt(argc, argv, "r:"));) {
+		switch (opt) {
+			break; case 'r': baudRate = strtoul(optarg, NULL, 10);
+			break; default:  return EX_USAGE;
+		}
+	}
+	if (argc - optind < 1) return EX_USAGE;
+
+	error = tcgetattr(STDIN_FILENO, &saveTerm);
+	if (error) err(EX_IOERR, "tcgetattr");
+	atexit(restoreTerm);
+
+	struct termios raw = saveTerm;
+	cfmakeraw(&raw);
+	error = tcsetattr(STDIN_FILENO, TCSADRAIN, &raw);
+	if (error) err(EX_IOERR, "tcsetattr");
+
+	struct winsize window;
+	error = ioctl(STDIN_FILENO, TIOCGWINSZ, &window);
+	if (error) err(EX_IOERR, "TIOCGWINSZ");
+
+	int pty;
+	pid_t pid = forkpty(&pty, NULL, NULL, &window);
+	if (pid < 0) err(EX_OSERR, "forkpty");
+
+	if (!pid) {
+		execvp(argv[optind], &argv[optind]);
+		err(EX_NOINPUT, "%s", argv[optind]);
+	}
+
+	byte c;
+	struct pollfd fds[2] = {
+		{ .events = POLLIN, .fd = STDIN_FILENO },
+		{ .events = POLLIN, .fd = pty },
+	};
+	while (usleep(8 * 1000000 / baudRate), 0 < poll(fds, 2, -1)) {
+		if (fds[0].revents) {
+			ssize_t size = read(STDIN_FILENO, &c, 1);
+			if (size < 0) err(EX_IOERR, "read(%d)", STDIN_FILENO);
+			size = write(pty, &c, 1);
+			if (size < 0) err(EX_IOERR, "write(%d)", pty);
+		}
+
+		if (fds[1].revents) {
+			ssize_t size = read(pty, &c, 1);
+			if (size < 0) err(EX_IOERR, "read(%d)", pty);
+			if (!size) break;
+			size = write(STDOUT_FILENO, &c, 1);
+			if (size < 0) err(EX_IOERR, "write(%d)", STDOUT_FILENO);
+		}
+	}
+
+	int status;
+	pid_t dead = waitpid(pid, &status, 0);
+	if (dead < 0) err(EX_OSERR, "waitpid");
+	return WIFEXITED(status) ? WEXITSTATUS(status) : EX_SOFTWARE;
+}
diff --git a/bin/mtags.c b/bin/mtags.c
new file mode 100644
index 00000000..1ebfbac5
--- /dev/null
+++ b/bin/mtags.c
@@ -0,0 +1,99 @@
+/* Copyright (C) 2021  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <err.h>
+#include <regex.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+static void escape(FILE *file, const char *str, size_t len) {
+	for (size_t i = 0; i < len; ++i) {
+		if (str[i] == '\\' || str[i] == '/') {
+			putc('\\', file);
+		}
+		putc(str[i], file);
+	}
+}
+
+int main(int argc, char *argv[]) {
+	bool append = false;
+	const char *path = "tags";
+	for (int opt; 0 < (opt = getopt(argc, argv, "af:"));) {
+		switch (opt) {
+			break; case 'a': append = true;
+			break; case 'f': path = optarg;
+			break; default:  return EX_USAGE;
+		}
+	}
+
+	FILE *tags = fopen(path, (append ? "a" : "w"));
+	if (!tags) err(EX_CANTCREAT, "%s", path);
+
+	regex_t makeFile, makeLine;
+	regex_t mdocFile, mdocLine;
+	regex_t shFile, shLine;
+	int error = 0
+		|| regcomp(&makeFile, "(^|/)Makefile|[.]mk$", REG_EXTENDED | REG_NOSUB)
+		|| regcomp(
+			&makeLine,
+			"^([.][^:$A-Z][^:$[:space:]]*|[^.:$][^:$[:space:]]*):",
+			REG_EXTENDED
+		)
+		|| regcomp(&mdocFile, "[.][1-9]$", REG_EXTENDED | REG_NOSUB)
+		|| regcomp(&mdocLine, "^[.]S[hs] ([^\t\n]+)", REG_EXTENDED)
+		|| regcomp(
+			&shFile, "(^|/)[.](profile|shrc)|[.]sh$", REG_EXTENDED | REG_NOSUB
+		)
+		|| regcomp(&shLine, "^([_[:alnum:]]+)[[:blank:]]*[(][)]", REG_EXTENDED);
+	assert(!error);
+
+	size_t cap = 0;
+	char *buf = NULL;
+	for (int i = optind; i < argc; ++i) {
+		const regex_t *regex;
+		if (!regexec(&makeFile, argv[i], 0, NULL, 0)) {
+			regex = &makeLine;
+		} else if (!regexec(&mdocFile, argv[i], 0, NULL, 0)) {
+			regex = &mdocLine;
+		} else if (!regexec(&shFile, argv[i], 0, NULL, 0)) {
+			regex = &shLine;
+		} else {
+			warnx("skipping unknown file type %s", argv[i]);
+			continue;
+		}
+
+		FILE *file = fopen(argv[i], "r");
+		if (!file) err(EX_NOINPUT, "%s", argv[i]);
+
+		while (0 < getline(&buf, &cap, file)) {
+			regmatch_t match[2];
+			if (regexec(regex, buf, 2, match, 0)) continue;
+			fprintf(
+				tags, "%.*s\t%s\t/^",
+				(int)(match[1].rm_eo - match[1].rm_so), &buf[match[1].rm_so],
+				argv[i]
+			);
+			escape(tags, buf, match[0].rm_eo);
+			fprintf(tags, "/\n");
+		}
+		fclose(file);
+	}
+}
diff --git a/bin/nudge.c b/bin/nudge.c
new file mode 100644
index 00000000..108d2459
--- /dev/null
+++ b/bin/nudge.c
@@ -0,0 +1,78 @@
+/* Copyright (C) 2020  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sysexits.h>
+#include <termios.h>
+#include <unistd.h>
+
+static int shake = 10;
+static int delay = 20000;
+static int count = 2;
+
+static void move(int tty, int x, int y) {
+	dprintf(tty, "\33[3;%d;%dt", x, y);
+	usleep(delay);
+}
+
+int main(int argc, char *argv[]) {
+	const char *path = "/dev/tty";
+	for (int opt; 0 < (opt = getopt(argc, argv, "f:n:s:t:"));) {
+		switch (opt) {
+			break; case 'f': path = optarg;
+			break; case 'n': count = atoi(optarg);
+			break; case 's': shake = atoi(optarg);
+			break; case 't': delay = atoi(optarg) * 1000;
+			break; default:  return EX_USAGE;
+		}
+	}
+
+	int tty = open(path, O_RDWR);
+	if (tty < 0) err(EX_OSFILE, "%s", path);
+
+	struct termios save;
+	int error = tcgetattr(tty, &save);
+	if (error) err(EX_IOERR, "tcgetattr");
+
+	struct termios raw = save;
+	cfmakeraw(&raw);
+	error = tcsetattr(tty, TCSAFLUSH, &raw);
+	if (error) err(EX_IOERR, "tcsetattr");
+
+	char buf[256];
+	dprintf(tty, "\33[13t");
+	ssize_t len = read(tty, buf, sizeof(buf) - 1);
+	buf[(len < 0 ? 0 : len)] = '\0';
+
+	int x, y;
+	int n = sscanf(buf, "\33[3;%d;%dt", &x, &y);
+
+	error = tcsetattr(tty, TCSANOW, &save);
+	if (error) err(EX_IOERR, "tcsetattr");
+	if (n < 2) return EX_CONFIG;
+
+	dprintf(tty, "\33[5t");
+	for (int i = 0; i < count; ++i) {
+		move(tty, x - shake, y);
+		move(tty, x, y + shake);
+		move(tty, x + shake, y);
+		move(tty, x, y - shake);
+		move(tty, x, y);
+	}
+}
diff --git a/bin/order.y b/bin/order.y
new file mode 100644
index 00000000..c2e87971
--- /dev/null
+++ b/bin/order.y
@@ -0,0 +1,195 @@
+/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+%{
+
+#include <ctype.h>
+#include <err.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+
+#define YYSTYPE char *
+
+static char *fmt(const char *format, ...) {
+	char *str = NULL;
+	va_list ap;
+	va_start(ap, format);
+	vasprintf(&str, format, ap);
+	va_end(ap);
+	if (!str) err(EX_OSERR, "vasprintf");
+	return str;
+}
+
+static int yylex(void);
+static void yyerror(const char *str);
+
+%}
+
+%token Ident
+
+%left ','
+%right '=' MulAss DivAss ModAss AddAss SubAss ShlAss ShrAss AndAss XorAss OrAss
+%right '?' ':'
+%left Or
+%left And
+%left '|'
+%left '^'
+%left '&'
+%left Eq Ne
+%left '<' Le '>' Ge
+%left Shl Shr
+%left '+' '-'
+%left '*' '/' '%'
+%right '!' '~' Inc Dec Sizeof
+%left '(' ')' '[' ']' Arr '.'
+
+%%
+
+start:
+	expr { printf("%s\n", $1); }
+	;
+
+expr:
+	Ident
+	| '(' expr ')' { $$ = $2; }
+	| expr '[' expr ']' { $$ = fmt("(%s[%s])", $1, $3); }
+	| expr Arr Ident { $$ = fmt("(%s->%s)", $1, $3); }
+	| expr '.' Ident { $$ = fmt("(%s.%s)", $1, $3); }
+	| '!' expr { $$ = fmt("(!%s)", $2); }
+	| '~' expr { $$ = fmt("(~%s)", $2); }
+	| Inc expr { $$ = fmt("(++%s)", $2); }
+	| Dec expr { $$ = fmt("(--%s)", $2); }
+	| expr Inc { $$ = fmt("(%s++)", $1); }
+	| expr Dec { $$ = fmt("(%s--)", $1); }
+	| '+' expr %prec '!' { $$ = fmt("(+%s)", $2); }
+	| '-' expr %prec '!' { $$ = fmt("(-%s)", $2); }
+	| '*' expr %prec '!' { $$ = fmt("(*%s)", $2); }
+	| '&' expr %prec '!' { $$ = fmt("(&%s)", $2); }
+	| Sizeof expr { $$ = fmt("(sizeof %s)", $2); }
+	| expr '*' expr { $$ = fmt("(%s * %s)", $1, $3); }
+	| expr '/' expr { $$ = fmt("(%s / %s)", $1, $3); }
+	| expr '%' expr { $$ = fmt("(%s %% %s)", $1, $3); }
+	| expr '+' expr { $$ = fmt("(%s + %s)", $1, $3); }
+	| expr '-' expr { $$ = fmt("(%s - %s)", $1, $3); }
+	| expr Shl expr { $$ = fmt("(%s << %s)", $1, $3); }
+	| expr Shr expr { $$ = fmt("(%s >> %s)", $1, $3); }
+	| expr '<' expr { $$ = fmt("(%s < %s)", $1, $3); }
+	| expr Le expr { $$ = fmt("(%s <= %s)", $1, $3); }
+	| expr '>' expr { $$ = fmt("(%s > %s)", $1, $3); }
+	| expr Ge expr { $$ = fmt("(%s >= %s)", $1, $3); }
+	| expr Eq expr { $$ = fmt("(%s == %s)", $1, $3); }
+	| expr Ne expr { $$ = fmt("(%s != %s)", $1, $3); }
+	| expr '&' expr { $$ = fmt("(%s & %s)", $1, $3); }
+	| expr '^' expr { $$ = fmt("(%s ^ %s)", $1, $3); }
+	| expr '|' expr { $$ = fmt("(%s | %s)", $1, $3); }
+	| expr And expr { $$ = fmt("(%s && %s)", $1, $3); }
+	| expr Or expr { $$ = fmt("(%s || %s)", $1, $3); }
+	| expr '?' expr ':' expr { $$ = fmt("(%s ? %s : %s)", $1, $3, $5); }
+	| expr ass expr %prec '=' { $$ = fmt("(%s %s %s)", $1, $2, $3); }
+	| expr ',' expr { $$ = fmt("(%s, %s)", $1, $3); }
+	;
+
+ass:
+	'=' { $$ = "="; }
+	| MulAss { $$ = "*="; }
+	| DivAss { $$ = "/="; }
+	| ModAss { $$ = "%="; }
+	| AddAss { $$ = "+="; }
+	| SubAss { $$ = "-="; }
+	| ShlAss { $$ = "<<="; }
+	| ShrAss { $$ = ">>="; }
+	| AndAss { $$ = "&="; }
+	| XorAss { $$ = "^="; }
+	| OrAss { $$ = "|="; }
+	;
+
+%%
+
+#define T(a, b) ((int)(a) << 8 | (int)(b))
+
+static FILE *in;
+
+static int yylex(void) {
+	char ch;
+	while (isspace(ch = getc(in)));
+
+	if (isalnum(ch)) {
+		char ident[64] = { ch, '\0' };
+		for (size_t i = 1; i < sizeof(ident) - 1; ++i) {
+			ch = getc(in);
+			if (!isalnum(ch) && ch != '_') break;
+			ident[i] = ch;
+		}
+		ungetc(ch, in);
+		if (!strcmp(ident, "sizeof")) return Sizeof;
+		yylval = fmt("%s", ident);
+		return Ident;
+	}
+
+	char ne = getc(in);
+	switch (T(ch, ne)) {
+		case T('-', '>'): return Arr;
+		case T('+', '+'): return Inc;
+		case T('-', '-'): return Dec;
+		case T('<', '='): return Le;
+		case T('>', '='): return Ge;
+		case T('=', '='): return Eq;
+		case T('!', '='): return Ne;
+		case T('&', '&'): return And;
+		case T('|', '|'): return Or;
+		case T('*', '='): return MulAss;
+		case T('/', '='): return DivAss;
+		case T('%', '='): return ModAss;
+		case T('+', '='): return AddAss;
+		case T('-', '='): return SubAss;
+		case T('&', '='): return AndAss;
+		case T('^', '='): return XorAss;
+		case T('|', '='): return OrAss;
+		case T('<', '<'): {
+			if ('=' == (ne = getc(in))) return ShlAss;
+			ungetc(ne, in);
+			return Shl;
+		}
+		case T('>', '>'): {
+			if ('=' == (ne = getc(in))) return ShrAss;
+			ungetc(ne, in);
+			return Shr;
+		}
+		default: {
+			ungetc(ne, in);
+			return ch;
+		}
+	}
+}
+
+static void yyerror(const char *str) {
+	errx(EX_DATAERR, "%s", str);
+}
+
+int main(int argc, char *argv[]) {
+	for (int i = 1; i < argc; ++i) {
+		in = fmemopen(argv[i], strlen(argv[i]), "r");
+		if (!in) err(EX_OSERR, "fmemopen");
+		yyparse();
+		fclose(in);
+	}
+	if (argc > 1) return EX_OK;
+	in = stdin;
+	yyparse();
+}
diff --git a/bin/pbd.c b/bin/pbd.c
new file mode 100644
index 00000000..2fd401ae
--- /dev/null
+++ b/bin/pbd.c
@@ -0,0 +1,151 @@
+/* Copyright (C) 2017  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <arpa/inet.h>
+#include <err.h>
+#include <fcntl.h>
+#include <netinet/in.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+typedef unsigned char byte;
+
+static void spawn(const char *cmd, const char *arg, int dest, int src) {
+	pid_t pid = fork();
+	if (pid < 0) err(EX_OSERR, "fork");
+
+	if (pid) {
+		int status;
+		pid_t dead = waitpid(pid, &status, 0);
+		if (dead < 0) err(EX_OSERR, "waitpid(%d)", pid);
+		if (status) warnx("%s: status %d", cmd, status);
+
+	} else {
+		int fd = dup2(src, dest);
+		if (fd < 0) err(EX_OSERR, "dup2");
+
+		execlp(cmd, cmd, arg, NULL);
+		err(EX_UNAVAILABLE, "%s", cmd);
+	}
+}
+
+static int pbd(void) {
+	int error;
+
+	int server = socket(PF_INET, SOCK_STREAM, 0);
+	if (server < 0) err(EX_OSERR, "socket");
+
+	error = fcntl(server, F_SETFD, FD_CLOEXEC);
+	if (error) err(EX_IOERR, "fcntl");
+
+	struct sockaddr_in addr = {
+		.sin_family = AF_INET,
+		.sin_port = htons(7062),
+		.sin_addr = { .s_addr = htonl(0x7F000001) },
+	};
+	error = bind(server, (struct sockaddr *)&addr, sizeof(addr));
+	if (error) err(EX_UNAVAILABLE, "bind");
+
+	error = listen(server, 0);
+	if (error) err(EX_UNAVAILABLE, "listen");
+
+	for (;;) {
+		int client = accept(server, NULL, NULL);
+		if (client < 0) err(EX_IOERR, "accept");
+
+		error = fcntl(client, F_SETFD, FD_CLOEXEC);
+		if (error) err(EX_IOERR, "fcntl");
+
+		char c = 0;
+		ssize_t size = read(client, &c, 1);
+		if (size < 0) warn("read");
+
+		switch (c) {
+			break; case 'p': spawn("pbpaste", NULL, STDOUT_FILENO, client);
+			break; case 'c': spawn("pbcopy", NULL, STDIN_FILENO, client);
+			break; case 'o': spawn("xargs", "open", STDIN_FILENO, client);
+		}
+
+		close(client);
+	}
+}
+
+static int pbdClient(char c) {
+	int client = socket(PF_INET, SOCK_STREAM, 0);
+	if (client < 0) err(EX_OSERR, "socket");
+
+	struct sockaddr_in addr = {
+		.sin_family = AF_INET,
+		.sin_port = htons(7062),
+		.sin_addr = { .s_addr = htonl(0x7F000001) },
+	};
+	int error = connect(client, (struct sockaddr *)&addr, sizeof(addr));
+	if (error) err(EX_UNAVAILABLE, "connect");
+
+	ssize_t size = write(client, &c, 1);
+	if (size < 0) err(EX_IOERR, "write");
+
+	return client;
+}
+
+static void copy(int out, int in) {
+	byte buf[4096];
+	ssize_t readSize;
+	while (0 < (readSize = read(in, buf, sizeof(buf)))) {
+		ssize_t writeSize = write(out, buf, readSize);
+		if (writeSize < 0) err(EX_IOERR, "write(%d)", out);
+	}
+	if (readSize < 0) err(EX_IOERR, "read(%d)", in);
+}
+
+static int pbcopy(void) {
+	int client = pbdClient('c');
+	copy(client, STDIN_FILENO);
+	return EX_OK;
+}
+
+static int pbpaste(void) {
+	int client = pbdClient('p');
+	copy(STDOUT_FILENO, client);
+	return EX_OK;
+}
+
+static int open1(const char *url) {
+	if (!url) return EX_USAGE;
+	int client = pbdClient('o');
+	ssize_t size = write(client, url, strlen(url));
+	if (size < 0) err(EX_IOERR, "write");
+	return EX_OK;
+}
+
+int main(int argc, char *argv[]) {
+	for (int opt; 0 < (opt = getopt(argc, argv, "co:ps"));) {
+		switch (opt) {
+			case 'c': return pbcopy();
+			case 'o': return open1(optarg);
+			case 'p': return pbpaste();
+			case 's': return pbd();
+			default:  return EX_USAGE;
+		}
+	}
+	return pbd();
+}
diff --git a/bin/png.h b/bin/png.h
new file mode 100644
index 00000000..15b6d13d
--- /dev/null
+++ b/bin/png.h
@@ -0,0 +1,108 @@
+/* Copyright (C) 2018  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sysexits.h>
+
+static inline uint32_t pngCRCTable(uint8_t n) {
+	static uint32_t table[256];
+	if (table[1]) return table[n];
+	for (int i = 0; i < 256; ++i) {
+		table[i] = i;
+		for (int j = 0; j < 8; ++j) {
+			table[i] = (table[i] >> 1) ^ (table[i] & 1 ? 0xEDB88320 : 0);
+		}
+	}
+	return table[n];
+}
+
+static uint32_t pngCRC;
+
+static inline void pngWrite(FILE *file, const uint8_t *ptr, uint32_t len) {
+	if (!fwrite(ptr, len, 1, file)) err(EX_IOERR, "pngWrite");
+	for (uint32_t i = 0; i < len; ++i) {
+		pngCRC = pngCRCTable(pngCRC ^ ptr[i]) ^ (pngCRC >> 8);
+	}
+}
+static inline void pngInt32(FILE *file, uint32_t n) {
+	pngWrite(file, (uint8_t []) { n >> 24, n >> 16, n >> 8, n }, 4);
+}
+static inline void pngChunk(FILE *file, char type[static 4], uint32_t len) {
+	pngInt32(file, len);
+	pngCRC = ~0;
+	pngWrite(file, (uint8_t *)type, 4);
+}
+
+enum {
+	PNGGrayscale,
+	PNGTruecolor = 2,
+	PNGIndexed,
+	PNGAlpha,
+};
+
+static inline void pngHead(
+	FILE *file, uint32_t width, uint32_t height, uint8_t depth, uint8_t color
+) {
+	pngWrite(file, (uint8_t *)"\x89PNG\r\n\x1A\n", 8);
+	pngChunk(file, "IHDR", 13);
+	pngInt32(file, width);
+	pngInt32(file, height);
+	pngWrite(file, &depth, 1);
+	pngWrite(file, &color, 1);
+	pngWrite(file, (uint8_t []) { 0, 0, 0 }, 3);
+	pngInt32(file, ~pngCRC);
+}
+
+static inline void pngPalette(FILE *file, const uint8_t *pal, uint32_t len) {
+	pngChunk(file, "PLTE", len);
+	pngWrite(file, pal, len);
+	pngInt32(file, ~pngCRC);
+}
+
+enum {
+	PNGNone,
+	PNGSub,
+	PNGUp,
+	PNGAverage,
+	PNGPaeth,
+};
+
+static inline void pngData(FILE *file, const uint8_t *data, uint32_t len) {
+	uint32_t adler1 = 1, adler2 = 0;
+	for (uint32_t i = 0; i < len; ++i) {
+		adler1 = (adler1 + data[i]) % 65521;
+		adler2 = (adler1 + adler2) % 65521;
+	}
+	uint32_t zlen = 2 + 5 * ((len + 0xFFFE) / 0xFFFF) + len + 4;
+	pngChunk(file, "IDAT", zlen);
+	pngWrite(file, (uint8_t []) { 0x08, 0x1D }, 2);
+	for (; len > 0xFFFF; data += 0xFFFF, len -= 0xFFFF) {
+		pngWrite(file, (uint8_t []) { 0x00, 0xFF, 0xFF, 0x00, 0x00 }, 5);
+		pngWrite(file, data, 0xFFFF);
+	}
+	pngWrite(file, (uint8_t []) { 0x01, len, len >> 8, ~len, ~len >> 8 }, 5);
+	pngWrite(file, data, len);
+	pngInt32(file, adler2 << 16 | adler1);
+	pngInt32(file, ~pngCRC);
+}
+
+static inline void pngTail(FILE *file) {
+	pngChunk(file, "IEND", 0);
+	pngInt32(file, ~pngCRC);
+}
diff --git a/bin/pngo.c b/bin/pngo.c
new file mode 100644
index 00000000..322cb1ba
--- /dev/null
+++ b/bin/pngo.c
@@ -0,0 +1,812 @@
+/* Copyright (C) 2018  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <arpa/inet.h>
+#include <err.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+#include <zlib.h>
+
+#define PACKED __attribute__((packed))
+#define PAIR(a, b) ((uint16_t)(a) << 8 | (uint16_t)(b))
+
+#define CRC_INIT (crc32(0, Z_NULL, 0))
+
+static bool verbose;
+static const char *path;
+static FILE *file;
+static uint32_t crc;
+
+static void readExpect(void *ptr, size_t size, const char *expect) {
+	fread(ptr, size, 1, file);
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+	if (feof(file)) errx(EX_DATAERR, "%s: missing %s", path, expect);
+	crc = crc32(crc, ptr, size);
+}
+
+static void writeExpect(const void *ptr, size_t size) {
+	fwrite(ptr, size, 1, file);
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+	crc = crc32(crc, ptr, size);
+}
+
+static const uint8_t Signature[8] = "\x89PNG\r\n\x1A\n";
+
+static void readSignature(void) {
+	uint8_t signature[8];
+	readExpect(signature, 8, "signature");
+	if (0 != memcmp(signature, Signature, 8)) {
+		errx(EX_DATAERR, "%s: invalid signature", path);
+	}
+}
+
+static void writeSignature(void) {
+	writeExpect(Signature, sizeof(Signature));
+}
+
+struct PACKED Chunk {
+	uint32_t size;
+	char type[4];
+};
+
+static const char *typeStr(struct Chunk chunk) {
+	static char buf[5];
+	memcpy(buf, chunk.type, 4);
+	return buf;
+}
+
+static struct Chunk readChunk(void) {
+	struct Chunk chunk;
+	readExpect(&chunk, sizeof(chunk), "chunk");
+	chunk.size = ntohl(chunk.size);
+	crc = crc32(CRC_INIT, (Byte *)chunk.type, sizeof(chunk.type));
+	return chunk;
+}
+
+static void writeChunk(struct Chunk chunk) {
+	chunk.size = htonl(chunk.size);
+	writeExpect(&chunk, sizeof(chunk));
+	crc = crc32(CRC_INIT, (Byte *)chunk.type, sizeof(chunk.type));
+}
+
+static void readCrc(void) {
+	uint32_t expected = crc;
+	uint32_t found;
+	readExpect(&found, sizeof(found), "CRC32");
+	found = ntohl(found);
+	if (found != expected) {
+		errx(
+			EX_DATAERR, "%s: expected CRC32 %08X, found %08X",
+			path, expected, found
+		);
+	}
+}
+
+static void writeCrc(void) {
+	uint32_t net = htonl(crc);
+	writeExpect(&net, sizeof(net));
+}
+
+static void skipChunk(struct Chunk chunk) {
+	if (!(chunk.type[0] & 0x20)) {
+		errx(EX_CONFIG, "%s: unsupported critical chunk %s", path, typeStr(chunk));
+	}
+	uint8_t discard[4096];
+	while (chunk.size > sizeof(discard)) {
+		readExpect(discard, sizeof(discard), "chunk data");
+		chunk.size -= sizeof(discard);
+	}
+	if (chunk.size) readExpect(discard, chunk.size, "chunk data");
+	readCrc();
+}
+
+static struct PACKED {
+	uint32_t width;
+	uint32_t height;
+	uint8_t depth;
+	enum PACKED {
+		Grayscale      = 0,
+		Truecolor      = 2,
+		Indexed        = 3,
+		GrayscaleAlpha = 4,
+		TruecolorAlpha = 6,
+	} color;
+	enum PACKED { Deflate } compression;
+	enum PACKED { Adaptive } filter;
+	enum PACKED { Progressive, Adam7 } interlace;
+} header;
+_Static_assert(13 == sizeof(header), "header size");
+
+static size_t pixelBits(void) {
+	switch (header.color) {
+		case Grayscale:      return 1 * header.depth;
+		case Truecolor:      return 3 * header.depth;
+		case Indexed:        return 1 * header.depth;
+		case GrayscaleAlpha: return 2 * header.depth;
+		case TruecolorAlpha: return 4 * header.depth;
+		default: abort();
+	}
+}
+
+static size_t pixelSize(void) {
+	return (pixelBits() + 7) / 8;
+}
+
+static size_t lineSize(void) {
+	return (header.width * pixelBits() + 7) / 8;
+}
+
+static size_t dataSize(void) {
+	return (1 + lineSize()) * header.height;
+}
+
+static const char *ColorStr[] = {
+	[Grayscale] = "grayscale",
+	[Truecolor] = "truecolor",
+	[Indexed] = "indexed",
+	[GrayscaleAlpha] = "grayscale alpha",
+	[TruecolorAlpha] = "truecolor alpha",
+};
+static void printHeader(void) {
+	fprintf(
+		stderr,
+		"%s: %ux%u %hhu-bit %s\n",
+		path,
+		header.width, header.height,
+		header.depth, ColorStr[header.color]
+	);
+}
+
+static void readHeader(struct Chunk chunk) {
+	if (chunk.size != sizeof(header)) {
+		errx(
+			EX_DATAERR, "%s: expected IHDR size %zu, found %u",
+			path, sizeof(header), chunk.size
+		);
+	}
+	readExpect(&header, sizeof(header), "header");
+	readCrc();
+
+	header.width = ntohl(header.width);
+	header.height = ntohl(header.height);
+
+	if (!header.width) errx(EX_DATAERR, "%s: invalid width 0", path);
+	if (!header.height) errx(EX_DATAERR, "%s: invalid height 0", path);
+	switch (PAIR(header.color, header.depth)) {
+		case PAIR(Grayscale, 1):
+		case PAIR(Grayscale, 2):
+		case PAIR(Grayscale, 4):
+		case PAIR(Grayscale, 8):
+		case PAIR(Grayscale, 16):
+		case PAIR(Truecolor, 8):
+		case PAIR(Truecolor, 16):
+		case PAIR(Indexed, 1):
+		case PAIR(Indexed, 2):
+		case PAIR(Indexed, 4):
+		case PAIR(Indexed, 8):
+		case PAIR(GrayscaleAlpha, 8):
+		case PAIR(GrayscaleAlpha, 16):
+		case PAIR(TruecolorAlpha, 8):
+		case PAIR(TruecolorAlpha, 16):
+			break;
+		default:
+			errx(
+				EX_DATAERR, "%s: invalid color type %hhu and bit depth %hhu",
+				path, header.color, header.depth
+			);
+	}
+	if (header.compression != Deflate) {
+		errx(
+			EX_DATAERR, "%s: invalid compression method %hhu",
+			path, header.compression
+		);
+	}
+	if (header.filter != Adaptive) {
+		errx(EX_DATAERR, "%s: invalid filter method %hhu", path, header.filter);
+	}
+	if (header.interlace > Adam7) {
+		errx(EX_DATAERR, "%s: invalid interlace method %hhu", path, header.interlace);
+	}
+
+	if (verbose) printHeader();
+}
+
+static void writeHeader(void) {
+	if (verbose) printHeader();
+
+	struct Chunk ihdr = { .size = sizeof(header), .type = "IHDR" };
+	writeChunk(ihdr);
+	header.width = htonl(header.width);
+	header.height = htonl(header.height);
+	writeExpect(&header, sizeof(header));
+	writeCrc();
+
+	header.width = ntohl(header.width);
+	header.height = ntohl(header.height);
+}
+
+static struct {
+	uint32_t len;
+	uint8_t entries[256][3];
+} palette;
+
+static struct {
+	uint32_t len;
+	uint8_t alpha[256];
+} trans;
+
+static void paletteClear(void) {
+	palette.len = 0;
+	trans.len = 0;
+}
+
+static uint32_t paletteIndex(bool alpha, const uint8_t *rgba) {
+	uint32_t i;
+	for (i = 0; i < palette.len; ++i) {
+		if (alpha && i < trans.len && trans.alpha[i] != rgba[3]) continue;
+		if (0 == memcmp(palette.entries[i], rgba, 3)) break;
+	}
+	return i;
+}
+
+static bool paletteAdd(bool alpha, const uint8_t *rgba) {
+	uint32_t i = paletteIndex(alpha, rgba);
+	if (i < palette.len) return true;
+	if (i == 256) return false;
+	memcpy(palette.entries[i], rgba, 3);
+	palette.len++;
+	if (alpha) {
+		trans.alpha[i] = rgba[3];
+		trans.len++;
+	}
+	return true;
+}
+
+static void transCompact(void) {
+	uint32_t i;
+	for (i = 0; i < trans.len; ++i) {
+		if (trans.alpha[i] == 0xFF) break;
+	}
+	if (i == trans.len) return;
+
+	for (uint32_t j = i + 1; j < trans.len; ++j) {
+		if (trans.alpha[j] == 0xFF) continue;
+
+		uint8_t alpha = trans.alpha[i];
+		trans.alpha[i] = trans.alpha[j];
+		trans.alpha[j] = alpha;
+
+		uint8_t rgb[3];
+		memcpy(rgb, palette.entries[i], 3);
+		memcpy(palette.entries[i], palette.entries[j], 3);
+		memcpy(palette.entries[j], rgb, 3);
+
+		i++;
+	}
+	trans.len = i;
+}
+
+static void readPalette(struct Chunk chunk) {
+	if (chunk.size % 3) {
+		errx(EX_DATAERR, "%s: PLTE size %u not divisible by 3", path, chunk.size);
+	}
+
+	palette.len = chunk.size / 3;
+	if (palette.len > 256) {
+		errx(EX_DATAERR, "%s: PLTE length %u > 256", path, palette.len);
+	}
+
+	readExpect(palette.entries, chunk.size, "palette data");
+	readCrc();
+
+	if (verbose) fprintf(stderr, "%s: palette length %u\n", path, palette.len);
+}
+
+static void writePalette(void) {
+	if (verbose) fprintf(stderr, "%s: palette length %u\n", path, palette.len);
+	struct Chunk plte = { .size = 3 * palette.len, .type = "PLTE" };
+	writeChunk(plte);
+	writeExpect(palette.entries, plte.size);
+	writeCrc();
+}
+
+static void readTrans(struct Chunk chunk) {
+	trans.len = chunk.size;
+	if (trans.len > 256) {
+		errx(EX_DATAERR, "%s: tRNS length %u > 256", path, trans.len);
+	}
+	readExpect(trans.alpha, chunk.size, "transparency alpha");
+	readCrc();
+	if (verbose) fprintf(stderr, "%s: transparency length %u\n", path, trans.len);
+}
+
+static void writeTrans(void) {
+	if (verbose) fprintf(stderr, "%s: transparency length %u\n", path, trans.len);
+	struct Chunk trns = { .size = trans.len, .type = "tRNS" };
+	writeChunk(trns);
+	writeExpect(trans.alpha, trns.size);
+	writeCrc();
+}
+
+static uint8_t *data;
+
+static void allocData(void) {
+	data = malloc(dataSize());
+	if (!data) err(EX_OSERR, "malloc(%zu)", dataSize());
+}
+
+static void readData(struct Chunk chunk) {
+	if (verbose) fprintf(stderr, "%s: data size %zu\n", path, dataSize());
+
+	struct z_stream_s stream = { .next_out = data, .avail_out = dataSize() };
+	int error = inflateInit(&stream);
+	if (error != Z_OK) errx(EX_SOFTWARE, "%s: inflateInit: %s", path, stream.msg);
+
+	for (;;) {
+		if (0 != memcmp(chunk.type, "IDAT", 4)) {
+			errx(EX_DATAERR, "%s: missing IDAT chunk", path);
+		}
+
+		uint8_t *idat = malloc(chunk.size);
+		if (!idat) err(EX_OSERR, "malloc");
+
+		readExpect(idat, chunk.size, "image data");
+		readCrc();
+
+		stream.next_in = idat;
+		stream.avail_in = chunk.size;
+		int error = inflate(&stream, Z_SYNC_FLUSH);
+		free(idat);
+
+		if (error == Z_STREAM_END) break;
+		if (error != Z_OK) {
+			errx(EX_DATAERR, "%s: inflate: %s", path, stream.msg);
+		}
+
+		chunk = readChunk();
+	}
+
+	inflateEnd(&stream);
+	if ((size_t)stream.total_out != dataSize()) {
+		errx(
+			EX_DATAERR, "%s: expected data size %zu, found %zu",
+			path, dataSize(), (size_t)stream.total_out
+		);
+	}
+
+	if (verbose) {
+		fprintf(
+			stderr, "%s: deflate size %zu\n", path, (size_t)stream.total_in
+		);
+	}
+}
+
+static void writeData(void) {
+	if (verbose) fprintf(stderr, "%s: data size %zu\n", path, dataSize());
+
+	uLong size = compressBound(dataSize());
+	uint8_t *deflate = malloc(size);
+	if (!deflate) err(EX_OSERR, "malloc");
+
+	int error = compress2(deflate, &size, data, dataSize(), Z_BEST_COMPRESSION);
+	if (error != Z_OK) errx(EX_SOFTWARE, "%s: compress2: %d", path, error);
+
+	struct Chunk idat = { .size = size, .type = "IDAT" };
+	writeChunk(idat);
+	writeExpect(deflate, size);
+	writeCrc();
+
+	free(deflate);
+
+	if (verbose) fprintf(stderr, "%s: deflate size %lu\n", path, size);
+}
+
+static void writeEnd(void) {
+	struct Chunk iend = { .size = 0, .type = "IEND" };
+	writeChunk(iend);
+	writeCrc();
+}
+
+enum PACKED Filter {
+	None,
+	Sub,
+	Up,
+	Average,
+	Paeth,
+	FilterCount,
+};
+
+struct Bytes {
+	uint8_t x;
+	uint8_t a;
+	uint8_t b;
+	uint8_t c;
+};
+
+static uint8_t paethPredictor(struct Bytes f) {
+	int32_t p = (int32_t)f.a + (int32_t)f.b - (int32_t)f.c;
+	int32_t pa = abs(p - (int32_t)f.a);
+	int32_t pb = abs(p - (int32_t)f.b);
+	int32_t pc = abs(p - (int32_t)f.c);
+	if (pa <= pb && pa <= pc) return f.a;
+	if (pb <= pc) return f.b;
+	return f.c;
+}
+
+static uint8_t recon(enum Filter type, struct Bytes f) {
+	switch (type) {
+		case None:    return f.x;
+		case Sub:     return f.x + f.a;
+		case Up:      return f.x + f.b;
+		case Average: return f.x + ((uint32_t)f.a + (uint32_t)f.b) / 2;
+		case Paeth:   return f.x + paethPredictor(f);
+		default:      abort();
+	}
+}
+
+static uint8_t filt(enum Filter type, struct Bytes f) {
+	switch (type) {
+		case None:    return f.x;
+		case Sub:     return f.x - f.a;
+		case Up:      return f.x - f.b;
+		case Average: return f.x - ((uint32_t)f.a + (uint32_t)f.b) / 2;
+		case Paeth:   return f.x - paethPredictor(f);
+		default:      abort();
+	}
+}
+
+static struct Line {
+	enum Filter type;
+	uint8_t data[];
+} **lines;
+
+static void allocLines(void) {
+	lines = calloc(header.height, sizeof(*lines));
+	if (!lines) err(EX_OSERR, "calloc(%u, %zu)", header.height, sizeof(*lines));
+}
+
+static void scanlines(void) {
+	size_t stride = 1 + lineSize();
+	for (uint32_t y = 0; y < header.height; ++y) {
+		lines[y] = (struct Line *)&data[y * stride];
+		if (lines[y]->type >= FilterCount) {
+			errx(EX_DATAERR, "%s: invalid filter type %hhu", path, lines[y]->type);
+		}
+	}
+}
+
+static struct Bytes origBytes(uint32_t y, size_t i) {
+	bool a = (i >= pixelSize()), b = (y > 0), c = (a && b);
+	return (struct Bytes) {
+		.x = lines[y]->data[i],
+		.a = a ? lines[y]->data[i - pixelSize()] : 0,
+		.b = b ? lines[y - 1]->data[i] : 0,
+		.c = c ? lines[y - 1]->data[i - pixelSize()] : 0,
+	};
+}
+
+static void reconData(void) {
+	for (uint32_t y = 0; y < header.height; ++y) {
+		for (size_t i = 0; i < lineSize(); ++i) {
+			lines[y]->data[i] =
+				recon(lines[y]->type, origBytes(y, i));
+		}
+		lines[y]->type = None;
+	}
+}
+
+static void filterData(void) {
+	if (header.color == Indexed || header.depth < 8) return;
+	for (uint32_t y = header.height - 1; y < header.height; --y) {
+		uint8_t filter[FilterCount][lineSize()];
+		uint32_t heuristic[FilterCount] = {0};
+		enum Filter minType = None;
+		for (enum Filter type = None; type < FilterCount; ++type) {
+			for (size_t i = 0; i < lineSize(); ++i) {
+				filter[type][i] = filt(type, origBytes(y, i));
+				heuristic[type] += abs((int8_t)filter[type][i]);
+			}
+			if (heuristic[type] < heuristic[minType]) minType = type;
+		}
+		lines[y]->type = minType;
+		memcpy(lines[y]->data, filter[minType], lineSize());
+	}
+}
+
+static void discardAlpha(void) {
+	if (header.color != GrayscaleAlpha && header.color != TruecolorAlpha) return;
+	size_t sampleSize = header.depth / 8;
+	size_t colorSize = pixelSize() - sampleSize;
+	for (uint32_t y = 0; y < header.height; ++y) {
+		for (uint32_t x = 0; x < header.width; ++x) {
+			for (size_t i = 0; i < sampleSize; ++i) {
+				if (lines[y]->data[x * pixelSize() + colorSize + i] != 0xFF) return;
+			}
+		}
+	}
+
+	uint8_t *ptr = data;
+	for (uint32_t y = 0; y < header.height; ++y) {
+		*ptr++ = lines[y]->type;
+		for (uint32_t x = 0; x < header.width; ++x) {
+			memmove(ptr, &lines[y]->data[x * pixelSize()], colorSize);
+			ptr += colorSize;
+		}
+	}
+	header.color = (header.color == GrayscaleAlpha) ? Grayscale : Truecolor;
+	scanlines();
+}
+
+static void discardColor(void) {
+	if (header.color != Truecolor && header.color != TruecolorAlpha) return;
+	size_t sampleSize = header.depth / 8;
+	for (uint32_t y = 0; y < header.height; ++y) {
+		for (uint32_t x = 0; x < header.width; ++x) {
+			uint8_t *r = &lines[y]->data[x * pixelSize()];
+			uint8_t *g = r + sampleSize;
+			uint8_t *b = g + sampleSize;
+			if (0 != memcmp(r, g, sampleSize)) return;
+			if (0 != memcmp(g, b, sampleSize)) return;
+		}
+	}
+
+	uint8_t *ptr = data;
+	for (uint32_t y = 0; y < header.height; ++y) {
+		*ptr++ = lines[y]->type;
+		for (uint32_t x = 0; x < header.width; ++x) {
+			uint8_t *pixel = &lines[y]->data[x * pixelSize()];
+			memmove(ptr, pixel, sampleSize);
+			ptr += sampleSize;
+			if (header.color == TruecolorAlpha) {
+				memmove(ptr, pixel + 3 * sampleSize, sampleSize);
+				ptr += sampleSize;
+			}
+		}
+	}
+	header.color = (header.color == Truecolor) ? Grayscale : GrayscaleAlpha;
+	scanlines();
+}
+
+static void indexColor(void) {
+	if (header.color != Truecolor && header.color != TruecolorAlpha) return;
+	if (header.depth != 8) return;
+	bool alpha = (header.color == TruecolorAlpha);
+	for (uint32_t y = 0; y < header.height; ++y) {
+		for (uint32_t x = 0; x < header.width; ++x) {
+			if (!paletteAdd(alpha, &lines[y]->data[x * pixelSize()])) return;
+		}
+	}
+	transCompact();
+
+	uint8_t *ptr = data;
+	for (uint32_t y = 0; y < header.height; ++y) {
+		*ptr++ = lines[y]->type;
+		for (uint32_t x = 0; x < header.width; ++x) {
+			*ptr++ = paletteIndex(alpha, &lines[y]->data[x * pixelSize()]);
+		}
+	}
+	header.color = Indexed;
+	scanlines();
+}
+
+static void reduceDepth8(void) {
+	if (header.color != Grayscale && header.color != Indexed) return;
+	if (header.depth != 8) return;
+	if (header.color == Grayscale) {
+		for (uint32_t y = 0; y < header.height; ++y) {
+			for (size_t i = 0; i < lineSize(); ++i) {
+				uint8_t a = lines[y]->data[i];
+				if ((a >> 4) != (a & 0x0F)) return;
+			}
+		}
+	} else if (palette.len > 16) {
+		return;
+	}
+
+	uint8_t *ptr = data;
+	for (uint32_t y = 0; y < header.height; ++y) {
+		*ptr++ = lines[y]->type;
+		for (size_t i = 0; i < lineSize(); i += 2) {
+			uint8_t iByte = lines[y]->data[i];
+			uint8_t jByte = (i + 1 < lineSize()) ? lines[y]->data[i + 1] : 0;
+			uint8_t a = iByte & 0x0F;
+			uint8_t b = jByte & 0x0F;
+			*ptr++ = a << 4 | b;
+		}
+	}
+	header.depth = 4;
+	scanlines();
+}
+
+static void reduceDepth4(void) {
+	if (header.depth != 4) return;
+	if (header.color == Grayscale) {
+		for (uint32_t y = 0; y < header.height; ++y) {
+			for (size_t i = 0; i < lineSize(); ++i) {
+				uint8_t a = lines[y]->data[i] >> 4;
+				uint8_t b = lines[y]->data[i] & 0x0F;
+				if ((a >> 2) != (a & 0x03)) return;
+				if ((b >> 2) != (b & 0x03)) return;
+			}
+		}
+	} else if (palette.len > 4) {
+		return;
+	}
+
+	uint8_t *ptr = data;
+	for (uint32_t y = 0; y < header.height; ++y) {
+		*ptr++ = lines[y]->type;
+		for (size_t i = 0; i < lineSize(); i += 2) {
+			uint8_t iByte = lines[y]->data[i];
+			uint8_t jByte = (i + 1 < lineSize()) ? lines[y]->data[i + 1] : 0;
+			uint8_t a = iByte >> 4 & 0x03, b = iByte & 0x03;
+			uint8_t c = jByte >> 4 & 0x03, d = jByte & 0x03;
+			*ptr++ = a << 6 | b << 4 | c << 2 | d;
+		}
+	}
+	header.depth = 2;
+	scanlines();
+}
+
+static void reduceDepth2(void) {
+	if (header.depth != 2) return;
+	if (header.color == Grayscale) {
+		for (uint32_t y = 0; y < header.height; ++y) {
+			for (size_t i = 0; i < lineSize(); ++i) {
+				uint8_t a = lines[y]->data[i] >> 6;
+				uint8_t b = lines[y]->data[i] >> 4 & 0x03;
+				uint8_t c = lines[y]->data[i] >> 2 & 0x03;
+				uint8_t d = lines[y]->data[i] & 0x03;
+				if ((a >> 1) != (a & 0x01)) return;
+				if ((b >> 1) != (b & 0x01)) return;
+				if ((c >> 1) != (c & 0x01)) return;
+				if ((d >> 1) != (d & 0x01)) return;
+			}
+		}
+	} else if (palette.len > 2) {
+		return;
+	}
+
+	uint8_t *ptr = data;
+	for (uint32_t y = 0; y < header.height; ++y) {
+		*ptr++ = lines[y]->type;
+		for (size_t i = 0; i < lineSize(); i += 2) {
+			uint8_t iByte = lines[y]->data[i];
+			uint8_t jByte = (i + 1 < lineSize()) ? lines[y]->data[i + 1] : 0;
+			uint8_t a = iByte >> 6 & 0x01, b = iByte >> 4 & 0x01;
+			uint8_t c = iByte >> 2 & 0x01, d = iByte & 0x01;
+			uint8_t e = jByte >> 6 & 0x01, f = jByte >> 4 & 0x01;
+			uint8_t g = jByte >> 2 & 0x01, h = jByte & 0x01;
+			*ptr++ = a << 7 | b << 6 | c << 5 | d << 4 | e << 3 | f << 2 | g << 1 | h;
+		}
+	}
+	header.depth = 1;
+	scanlines();
+}
+
+static void reduceDepth(void) {
+	reduceDepth8();
+	reduceDepth4();
+	reduceDepth2();
+}
+
+static void optimize(const char *inPath, const char *outPath) {
+	if (inPath) {
+		path = inPath;
+		file = fopen(path, "r");
+		if (!file) err(EX_NOINPUT, "%s", path);
+	} else {
+		path = "(stdin)";
+		file = stdin;
+	}
+
+	readSignature();
+	struct Chunk ihdr = readChunk();
+	if (0 != memcmp(ihdr.type, "IHDR", 4)) {
+		errx(EX_DATAERR, "%s: expected IHDR, found %s", path, typeStr(ihdr));
+	}
+	readHeader(ihdr);
+	if (header.interlace != Progressive) {
+		errx(
+			EX_CONFIG, "%s: unsupported interlace method %hhu",
+			path, header.interlace
+		);
+	}
+
+	paletteClear();
+	allocData();
+	for (;;) {
+		struct Chunk chunk = readChunk();
+		if (0 == memcmp(chunk.type, "PLTE", 4)) {
+			readPalette(chunk);
+		} else if (0 == memcmp(chunk.type, "tRNS", 4)) {
+			readTrans(chunk);
+		} else if (0 == memcmp(chunk.type, "IDAT", 4)) {
+			readData(chunk);
+		} else if (0 != memcmp(chunk.type, "IEND", 4)) {
+			skipChunk(chunk);
+		} else {
+			break;
+		}
+	}
+
+	fclose(file);
+
+	allocLines();
+	scanlines();
+	reconData();
+
+	discardAlpha();
+	discardColor();
+	indexColor();
+	reduceDepth();
+	filterData();
+	free(lines);
+
+	if (outPath) {
+		path = outPath;
+		file = fopen(path, "w");
+		if (!file) err(EX_CANTCREAT, "%s", path);
+	} else {
+		path = "(stdout)";
+		file = stdout;
+	}
+
+	writeSignature();
+	writeHeader();
+	if (header.color == Indexed) {
+		writePalette();
+		if (trans.len) writeTrans();
+	}
+	writeData();
+	writeEnd();
+	free(data);
+
+	int error = fclose(file);
+	if (error) err(EX_IOERR, "%s", path);
+}
+
+int main(int argc, char *argv[]) {
+	bool stdio = false;
+	char *output = NULL;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "co:v"))) {
+		switch (opt) {
+			break; case 'c': stdio = true;
+			break; case 'o': output = optarg;
+			break; case 'v': verbose = true;
+			break; default: return EX_USAGE;
+		}
+	}
+
+	if (argc - optind == 1 && (output || stdio)) {
+		optimize(argv[optind], output);
+	} else if (optind < argc) {
+		for (int i = optind; i < argc; ++i) {
+			optimize(argv[i], argv[i]);
+		}
+	} else {
+		optimize(NULL, output);
+	}
+
+	return EX_OK;
+}
diff --git a/bin/psf2png.c b/bin/psf2png.c
new file mode 100644
index 00000000..1aaa8635
--- /dev/null
+++ b/bin/psf2png.c
@@ -0,0 +1,107 @@
+/* Copyright (C) 2018  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#include "png.h"
+
+int main(int argc, char *argv[]) {
+	uint32_t cols = 32;
+	const char *str = NULL;
+	uint32_t fg = 0xFFFFFF;
+	uint32_t bg = 0x000000;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "b:c:f:s:"))) {
+		switch (opt) {
+			break; case 'b': bg = strtoul(optarg, NULL, 16);
+			break; case 'c': cols = strtoul(optarg, NULL, 0);
+			break; case 'f': fg = strtoul(optarg, NULL, 16);
+			break; case 's': str = optarg;
+			break; default:  return EX_USAGE;
+		}
+	}
+	if (!cols && str) cols = strlen(str);
+	if (!cols) return EX_USAGE;
+
+	const char *path = NULL;
+	if (optind < argc) path = argv[optind];
+	
+	FILE *file = path ? fopen(path, "r") : stdin;
+	if (!file) err(EX_NOINPUT, "%s", path);
+	if (!path) path = "(stdin)";
+
+	struct {
+		uint32_t magic;
+		uint32_t version;
+		uint32_t size;
+		uint32_t flags;
+		struct {
+			uint32_t len;
+			uint32_t size;
+			uint32_t height;
+			uint32_t width;
+		} glyph;
+	} header;
+	size_t len = fread(&header, sizeof(header), 1, file);
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+	if (len < 1) errx(EX_DATAERR, "%s: truncated header", path);
+
+	uint32_t widthBytes = (header.glyph.width + 7) / 8;
+	uint8_t glyphs[header.glyph.len][header.glyph.height][widthBytes];
+	len = fread(glyphs, header.glyph.size, header.glyph.len, file);
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+	if (len < header.glyph.len) {
+		errx(EX_DATAERR, "%s: truncated glyphs", path);
+	}
+	fclose(file);
+
+	uint32_t count = (str ? strlen(str) : header.glyph.len);
+	uint32_t width = header.glyph.width * cols;
+	uint32_t rows = (count + cols - 1) / cols;
+	uint32_t height = header.glyph.height * rows;
+
+	pngHead(stdout, width, height, 8, PNGIndexed);
+	uint8_t pal[] = {
+		bg >> 16, bg >> 8, bg,
+		fg >> 16, fg >> 8, fg,
+	};
+	pngPalette(stdout, pal, sizeof(pal));
+
+	uint8_t data[height][1 + width];
+	memset(data, PNGNone, sizeof(data));
+
+	for (uint32_t i = 0; i < count; ++i) {
+		uint32_t row = header.glyph.height * (i / cols);
+		uint32_t col = 1 + header.glyph.width * (i % cols);
+		uint32_t g = (str ? str[i] : i);
+		for (uint32_t y = 0; y < header.glyph.height; ++y) {
+			for (uint32_t x = 0; x < header.glyph.width; ++x) {
+				uint8_t bit = glyphs[g][y][x / 8] >> (7 - x % 8) & 1;
+				data[row + y][col + x] = bit;
+			}
+		}
+	}
+
+	pngData(stdout, (uint8_t *)data, sizeof(data));
+	pngTail(stdout);
+}
diff --git a/bin/psfed.c b/bin/psfed.c
new file mode 100644
index 00000000..4f46b500
--- /dev/null
+++ b/bin/psfed.c
@@ -0,0 +1,577 @@
+/* Copyright (C) 2018  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <linux/fb.h>
+#include <locale.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sysexits.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+
+static const wchar_t CP437[256] =
+	L"\0☺☻♥♦♣♠•◘○◙♂♀♪♫☼"
+	L"►◄↕‼¶§▬↨↑↓→←∟↔▲▼"
+	L" !\"#$%&'()*+,-./"
+	L"0123456789:;<=>?"
+	L"@ABCDEFGHIJKLMNO"
+	L"PQRSTUVWXYZ[\\]^_"
+	L"`abcdefghijklmno"
+	L"pqrstuvwxyz{|}~⌂"
+	L"ÇüéâäàåçêëèïîìÄÅ"
+	L"ÉæÆôöòûùÿÖÜ¢£¥₧ƒ"
+	L"áíóúñѪº¿⌐¬½¼¡«»"
+	L"░▒▓│┤╡╢╖╕╣║╗╝╜╛┐"
+	L"└┴┬├─┼╞╟╚╔╩╦╠═╬╧"
+	L"╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀"
+	L"αßΓπΣσµτΦΘΩδ∞φε∩"
+	L"≡±≥≤⌠⌡÷≈°∙·√ⁿ²■\0";
+
+static struct {
+	uint32_t width;
+	uint32_t height;
+	uint32_t *buffer;
+	uint32_t background;
+} frame;
+
+static void frameClear(void) {
+	for (uint32_t i = 0; i < frame.width * frame.height; ++i) {
+		frame.buffer[i] = frame.background;
+	}
+}
+
+static void frameOpen(void) {
+	const char *dev = getenv("FRAMEBUFFER");
+	if (!dev) dev = "/dev/fb0";
+
+	int fd = open(dev, O_RDWR);
+	if (fd < 0) err(EX_OSFILE, "%s", dev);
+
+	struct fb_var_screeninfo info;
+	int error = ioctl(fd, FBIOGET_VSCREENINFO, &info);
+	if (error) err(EX_IOERR, "%s", dev);
+
+	frame.width = info.xres;
+	frame.height = 3 * info.yres / 4;
+	frame.buffer = mmap(
+		NULL, sizeof(*frame.buffer) * frame.width * frame.height,
+		PROT_READ | PROT_WRITE, MAP_SHARED,
+		fd, 0
+	);
+	if (frame.buffer == MAP_FAILED) err(EX_IOERR, "%s", dev);
+	close(fd);
+
+	frame.background = frame.buffer[0];
+	atexit(frameClear);
+}
+
+static const uint32_t Magic = 0x864AB572;
+static const uint32_t Version = 0;
+static const uint32_t FlagUnicode = 1 << 0;
+static uint32_t bytes(uint32_t bits) {
+	return (bits + 7) / 8;
+}
+
+static char *path;
+static struct {
+	uint32_t magic;
+	uint32_t version;
+	uint32_t size;
+	uint32_t flags;
+	struct {
+		uint32_t len;
+		uint32_t size;
+		uint32_t height;
+		uint32_t width;
+	} glyph;
+} header;
+static uint8_t *glyphs;
+
+static void fileRead(uint32_t newLen, uint32_t newWidth, uint32_t newHeight) {
+	FILE *file = fopen(path, "r");
+	if (file) {
+		size_t len = fread(&header, sizeof(header), 1, file);
+		if (ferror(file)) err(EX_IOERR, "%s", path);
+		if (len < 1) errx(EX_DATAERR, "%s: truncated header", path);
+
+	} else {
+		if (errno != ENOENT) err(EX_NOINPUT, "%s", path);
+		header.magic = Magic;
+		header.version = Version;
+		header.size = sizeof(header);
+		header.flags = 0;
+		header.glyph.len = newLen;
+		header.glyph.size = bytes(newWidth) * newHeight;
+		header.glyph.height = newHeight;
+		header.glyph.width = newWidth;
+	}
+
+	if (header.magic != Magic) {
+		errx(EX_DATAERR, "%s: invalid magic %08X", path, header.magic);
+	}
+	if (header.version != Version) {
+		errx(EX_DATAERR, "%s: unsupported version %u", path, header.version);
+	}
+	if (header.flags & FlagUnicode) {
+		errx(EX_DATAERR, "%s: unsupported unicode table", path);
+	}
+	if (header.flags) {
+		errx(EX_DATAERR, "%s: unsupported flags %08X", path, header.flags);
+	}
+
+	if (file && header.size > sizeof(header)) {
+		int error = fseek(file, header.size, SEEK_SET);
+		if (error) err(EX_IOERR, "%s", path);
+
+		warnx("%s: truncating long header", path);
+		header.size = sizeof(header);
+	}
+
+	glyphs = calloc(header.glyph.len, header.glyph.size);
+	if (!glyphs) err(EX_OSERR, "calloc");
+
+	if (file) {
+		size_t len = fread(glyphs, header.glyph.size, header.glyph.len, file);
+		if (ferror(file)) err(EX_IOERR, "%s", path);
+		if (len < header.glyph.len) {
+			errx(EX_DATAERR, "%s: truncated glyphs", path);
+		}
+		fclose(file);
+	}
+}
+
+static void fileWrite(void) {
+	FILE *file = fopen(path, "w");
+	if (!file) err(EX_CANTCREAT, "%s", path);
+
+	fwrite(&header, sizeof(header), 1, file);
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+
+	fwrite(glyphs, header.glyph.size, header.glyph.len, file);
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+
+	int error = fclose(file);
+	if (error) err(EX_IOERR, "%s", path);
+}
+
+static uint8_t *glyph(uint32_t index) {
+	return &glyphs[header.glyph.size * index];
+}
+static uint8_t *bitByte(uint32_t index, uint32_t x, uint32_t y) {
+	return &glyph(index)[bytes(header.glyph.width) * y + x / 8];
+}
+static uint8_t bitGet(uint32_t index, uint32_t x, uint32_t y) {
+	return *bitByte(index, x, y) >> (7 - x % 8) & 1;
+}
+static void bitFlip(uint32_t index, uint32_t x, uint32_t y) {
+	*bitByte(index, x, y) ^= 1 << (7 - x % 8);
+}
+static void bitSet(uint32_t index, uint32_t x, uint32_t y, uint8_t bit) {
+	*bitByte(index, x, y) &= ~(1 << (7 - x % 8));
+	*bitByte(index, x, y) |= bit << (7 - x % 8);
+}
+
+static void drawGlyph(
+	uint32_t destX, uint32_t destY, uint32_t scale, uint32_t index,
+	uint32_t selectX, uint32_t selectY, uint32_t guideX, uint32_t guideY
+) {
+	destX <<= scale;
+	destY <<= scale;
+
+	for (uint32_t y = 0; y < (header.glyph.height << scale); ++y) {
+		if (destY + y >= frame.height) break;
+		for (uint32_t x = 0; x < (header.glyph.width << scale); ++x) {
+			if (destX + x >= frame.width) break;
+
+			uint32_t glyphX = x >> scale;
+			uint32_t glyphY = y >> scale;
+			uint32_t fill = -bitGet(index, glyphX, glyphY);
+			if (selectX & 1 << glyphX && selectY & 1 << glyphY) fill ^= 0x77;
+			if (guideX & 1 << glyphX || guideY & 1 << glyphY) fill ^= 0x3300;
+
+			frame.buffer[frame.width * (destY + y) + destX + x] = fill;
+		}
+	}
+}
+
+static void drawBorder(uint32_t destX, uint32_t destY, uint32_t scale) {
+	destX <<= scale;
+	destY <<= scale;
+
+	for (uint32_t y = 0; y < destY; ++y) {
+		if (y >= frame.height) break;
+		uint32_t fill = -(y >> scale & 1) ^ 0x555555;
+		for (uint32_t x = 0; x < (uint32_t)(1 << scale); ++x) {
+			if (destX + x >= frame.width) break;
+			frame.buffer[frame.width * y + destX + x] = fill;
+		}
+	}
+
+	for (uint32_t x = 0; x < destX; ++x) {
+		if (x >= frame.width) break;
+		uint32_t fill = -(x >> scale & 1) ^ 0x555555;
+		for (uint32_t y = 0; y < (uint32_t)(1 << scale); ++y) {
+			if (destY + y >= frame.height) break;
+			frame.buffer[frame.width * (destY + y) + x] = fill;
+		}
+	}
+}
+
+enum { LF = '\n', Esc = '\33', Del = '\177' };
+
+static enum {
+	Normal,
+	Edit,
+	Preview,
+	Discard,
+} mode;
+
+static struct {
+	uint32_t scale;
+	uint32_t index;
+	bool modified;
+	bool to;
+	uint32_t from;
+} normal;
+
+static struct {
+	uint32_t scale;
+	uint32_t index;
+	uint32_t x;
+	uint32_t y;
+	uint32_t guideX;
+	uint32_t guideY;
+	uint8_t *undo;
+	uint8_t *copy;
+} edit = {
+	.scale = 4,
+};
+
+static const uint32_t NormalCols = 32;
+static void drawNormal(void) {
+	for (uint32_t i = 0; i < header.glyph.len; ++i) {
+		drawGlyph(
+			header.glyph.width * (i % NormalCols),
+			header.glyph.height * (i  / NormalCols),
+			normal.scale, i,
+			-(i == normal.index), -(i == normal.index), 0, 0
+		);
+	}
+}
+
+static void normalDec(uint32_t n) {
+	if (normal.index >= n) normal.index -= n;
+}
+static void normalInc(uint32_t n) {
+	if (normal.index + n < header.glyph.len) normal.index += n;
+}
+static void normalPrint(const char *prefix) {
+	if (normal.index <= 256) {
+		printf(
+			"%s: %02X '%lc'\n",
+			prefix, normal.index, (wint_t)CP437[normal.index]
+		);
+	} else {
+		printf("%s: %02X\n", prefix, normal.index);
+	}
+}
+
+static void inputNormal(char ch) {
+	if (normal.to) {
+		if (ch < header.glyph.len) normal.index = ch;
+		normalPrint("index");
+		normal.to = false;
+		return;
+	}
+
+	switch (ch) {
+		break; case 'q': {
+			if (!normal.modified) exit(EX_OK);
+			mode = Discard;
+		}
+		break; case 'w': {
+			fileWrite();
+			printf("write: %s\n", path);
+			normal.modified = false;
+		}
+		break; case '-': if (normal.scale) normal.scale--; frameClear();
+		break; case '+': normal.scale++;
+		break; case 'h': normalDec(1); normalPrint("index");
+		break; case 'l': normalInc(1); normalPrint("index");
+		break; case 'k': normalDec(NormalCols); normalPrint("index");
+		break; case 'j': normalInc(NormalCols); normalPrint("index");
+		break; case 'f': normal.from = normal.index; normal.to = true;
+		break; case 047: normal.index = normal.from; normalPrint("index");
+		break; case 'y': {
+			if (!edit.copy) edit.copy = malloc(header.glyph.size);
+			if (!edit.copy) err(EX_OSERR, "malloc");
+			memcpy(edit.copy, glyph(normal.index), header.glyph.size);
+			normalPrint("copy");
+		}
+		break; case 'e': {
+			normal.modified = true;
+			edit.index = normal.index;
+			if (!edit.undo) edit.undo = malloc(header.glyph.size);
+			if (!edit.undo) err(EX_OSERR, "malloc");
+			memcpy(edit.undo, glyph(edit.index), header.glyph.size);
+			mode = Edit;
+			frameClear();
+		}
+		break; case 'i': mode = Preview; frameClear();
+	}
+}
+
+static void drawEdit(void) {
+	drawGlyph(
+		0, 0, edit.scale, edit.index,
+		1 << edit.x, 1 << edit.y, edit.guideX, edit.guideY
+	);
+	drawBorder(header.glyph.width, header.glyph.height, edit.scale);
+	drawGlyph(
+		header.glyph.width << edit.scale,
+		header.glyph.height << edit.scale,
+		0, edit.index,
+		0, 0, 0, 0
+	);
+}
+
+static void inputEdit(char ch) {
+	switch (ch) {
+		break; case Esc: mode = Normal; frameClear();
+
+		break; case '-': if (edit.scale) edit.scale--; frameClear();
+		break; case '+': edit.scale++;
+		break; case 'g': edit.guideY ^= 1 << edit.y;
+		break; case 'G': edit.guideX ^= 1 << edit.x;
+
+		break; case 'h': if (edit.x) edit.x--;
+		break; case 'l': if (edit.x + 1 < header.glyph.width) edit.x++;
+		break; case 'k': if (edit.y) edit.y--;
+		break; case 'j': if (edit.y + 1 < header.glyph.height) edit.y++;
+		break; case ' ': bitFlip(edit.index, edit.x, edit.y);
+
+		break; case 'r': {
+			for (uint32_t y = 0; y < header.glyph.height; ++y) {
+				for (uint32_t x = 0; x < header.glyph.width; ++x) {
+					bitFlip(edit.index, x, y);
+				}
+			}
+		}
+
+		break; case 'H': {
+			for (uint32_t x = 0; x < header.glyph.width; ++x) {
+				for (uint32_t y = 0; y < header.glyph.height; ++y) {
+					if (x + 1 < header.glyph.width) {
+						bitSet(edit.index, x, y, bitGet(edit.index, x + 1, y));
+					} else {
+						bitSet(edit.index, x, y, 0);
+					}
+				}
+			}
+		}
+
+		break; case 'L': {
+			uint32_t width = header.glyph.width;
+			for (uint32_t x = width - 1; x < width; --x) {
+				for (uint32_t y = 0; y < header.glyph.height; ++y) {
+					if (x - 1 < width) {
+						bitSet(edit.index, x, y, bitGet(edit.index, x - 1, y));
+					} else {
+						bitSet(edit.index, x, y, 0);
+					}
+				}
+			}
+		}
+
+		break; case 'K': {
+			for (uint32_t y = 0; y < header.glyph.height; ++y) {
+				for (uint32_t x = 0; x < header.glyph.width; ++x) {
+					if (y + 1 < header.glyph.height) {
+						bitSet(edit.index, x, y, bitGet(edit.index, x, y + 1));
+					} else {
+						bitSet(edit.index, x, y, 0);
+					}
+				}
+			}
+		}
+
+		break; case 'J': {
+			uint32_t height = header.glyph.height;
+			for (uint32_t y = height - 1; y < height; --y) {
+				for (uint32_t x = 0; x < header.glyph.width; ++x) {
+					if (y - 1 < height) {
+						bitSet(edit.index, x, y, bitGet(edit.index, x, y - 1));
+					} else {
+						bitSet(edit.index, x, y, 0);
+					}
+				}
+			}
+		}
+
+		break; case 'p': {
+			if (!edit.copy) break;
+			memcpy(glyph(edit.index), edit.copy, header.glyph.size);
+		}
+		break; case 'u': {
+			if (!edit.undo) break;
+			memcpy(glyph(edit.index), edit.undo, header.glyph.size);
+		}
+	}
+}
+
+enum { PreviewRows = 8, PreviewCols = 64 };
+static struct {
+	uint32_t glyphs[PreviewRows * PreviewCols];
+	uint32_t index;
+} preview;
+
+static void drawPreview(void) {
+	for (uint32_t i = 0; i < PreviewRows * PreviewCols; ++i) {
+		drawGlyph(
+			header.glyph.width * (i % PreviewCols),
+			header.glyph.height * (i / PreviewCols),
+			0, preview.glyphs[i],
+			-(i == preview.index), -(i == preview.index), 0, 0
+		);
+	}
+}
+
+static void inputPreview(char ch) {
+	switch (ch) {
+		break; case Esc: mode = Normal; frameClear();
+		break; case Del: {
+			if (preview.index) preview.index--;
+			preview.glyphs[preview.index] = 0;
+		}
+		break; case LF: {
+			uint32_t tail = PreviewCols - (preview.index % PreviewCols);
+			memset(
+				&preview.glyphs[preview.index],
+				0, sizeof(preview.glyphs[0]) * tail
+			);
+			preview.index += tail;
+		}
+		break; default: preview.glyphs[preview.index++] = ch;
+	}
+	preview.index %= PreviewRows * PreviewCols;
+}
+
+static void drawDiscard(void) {
+	printf("discard modifications? ");
+	fflush(stdout);
+}
+
+static void inputDiscard(char ch) {
+	printf("%c\n", ch);
+	if (ch == 'Y' || ch == 'y') exit(EX_OK);
+	mode = Normal;
+}
+
+static void draw(void) {
+	switch (mode) {
+		break; case Normal: drawNormal();
+		break; case Edit: drawEdit();
+		break; case Preview: drawPreview();
+		break; case Discard: drawDiscard();
+	}
+}
+
+static void input(char ch) {
+	switch (mode) {
+		break; case Normal: inputNormal(ch);
+		break; case Edit: inputEdit(ch);
+		break; case Preview: inputPreview(ch);
+		break; case Discard: inputDiscard(ch);
+	}
+}
+
+static struct termios saveTerm;
+static void restoreTerm(void) {
+	tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm);
+}
+
+int main(int argc, char *argv[]) {
+	setlocale(LC_CTYPE, "");
+
+	uint32_t newLen = 256;
+	uint32_t newWidth = 8;
+	uint32_t newHeight = 16;
+	uint32_t setHeight = 0;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "H:g:h:w:"))) {
+		switch (opt) {
+			break; case 'H': setHeight = strtoul(optarg, NULL, 0);
+			break; case 'g': newLen = strtoul(optarg, NULL, 0);
+			break; case 'h': newHeight = strtoul(optarg, NULL, 0);
+			break; case 'w': newWidth = strtoul(optarg, NULL, 0);
+			break; default:  return EX_USAGE;
+		}
+	}
+	if (!newLen || !newWidth || !newHeight) return EX_USAGE;
+	if (optind == argc) return EX_USAGE;
+
+	path = strdup(argv[optind]);
+	fileRead(newLen, newWidth, newHeight);
+
+	if (setHeight) {
+		if (setHeight < header.glyph.height) {
+			errx(EX_CONFIG, "cannot decrease height");
+		}
+
+		uint32_t setSize = bytes(header.glyph.width) * setHeight;
+		uint8_t *setGlyphs = calloc(header.glyph.len, setSize);
+		for (uint32_t i = 0; i < header.glyph.len; ++i) {
+			memcpy(&setGlyphs[setSize * i], glyph(i), header.glyph.size);
+		}
+		free(glyphs);
+		glyphs = setGlyphs;
+
+		header.glyph.height = setHeight;
+		header.glyph.size = setSize;
+		normal.modified = true;
+	}
+
+	frameOpen();
+	frameClear();
+
+	int error = tcgetattr(STDIN_FILENO, &saveTerm);
+	if (error) err(EX_IOERR, "tcgetattr");
+	atexit(restoreTerm);
+
+	struct termios term = saveTerm;
+	term.c_lflag &= ~(ICANON | ECHO);
+	error = tcsetattr(STDIN_FILENO, TCSADRAIN, &term);
+	if (error) err(EX_IOERR, "tcsetattr");
+
+	for (;;) {
+		draw();
+		char ch;
+		ssize_t size = read(STDIN_FILENO, &ch, 1);
+		if (size < 0) err(EX_IOERR, "read");
+		if (!size) return EX_SOFTWARE;
+		input(ch);
+	}
+}
diff --git a/bin/ptee.c b/bin/ptee.c
new file mode 100644
index 00000000..6a9a16b4
--- /dev/null
+++ b/bin/ptee.c
@@ -0,0 +1,116 @@
+/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <poll.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+#include <sysexits.h>
+#include <termios.h>
+#include <unistd.h>
+
+#if defined __FreeBSD__
+#include <libutil.h>
+#elif defined __linux__
+#include <pty.h>
+#else
+#include <util.h>
+#endif
+
+typedef unsigned char byte;
+
+static struct termios saveTerm;
+static void restoreTerm(void) {
+	tcsetattr(STDIN_FILENO, TCSADRAIN, &saveTerm);
+}
+
+int main(int argc, char *argv[]) {
+	if (argc < 2) return EX_USAGE;
+	if (isatty(STDOUT_FILENO)) errx(EX_USAGE, "stdout is not redirected");
+
+	int error = tcgetattr(STDIN_FILENO, &saveTerm);
+	if (error) err(EX_IOERR, "tcgetattr");
+	atexit(restoreTerm);
+
+	struct termios raw = saveTerm;
+	cfmakeraw(&raw);
+	error = tcsetattr(STDIN_FILENO, TCSADRAIN, &raw);
+	if (error) err(EX_IOERR, "tcsetattr");
+
+	struct winsize window;
+	error = ioctl(STDIN_FILENO, TIOCGWINSZ, &window);
+	if (error) err(EX_IOERR, "ioctl");
+
+	int pty;
+	pid_t pid = forkpty(&pty, NULL, NULL, &window);
+	if (pid < 0) err(EX_OSERR, "forkpty");
+
+	if (!pid) {
+		execvp(argv[1], &argv[1]);
+		err(EX_NOINPUT, "%s", argv[1]);
+	}
+
+	bool stop = false;
+
+	byte buf[4096];
+	struct pollfd fds[2] = {
+		{ .events = POLLIN, .fd = STDIN_FILENO },
+		{ .events = POLLIN, .fd = pty },
+	};
+	while (0 < poll(fds, 2, -1)) {
+		if (fds[0].revents & POLLIN) {
+			ssize_t rlen = read(STDIN_FILENO, buf, sizeof(buf));
+			if (rlen < 0) err(EX_IOERR, "read");
+
+			if (rlen == 1 && buf[0] == CTRL('S')) {
+				stop ^= true;
+				continue;
+			}
+
+			if (rlen == 1 && buf[0] == CTRL('Q')) {
+				char dump[] = "\x1B[10i";
+				ssize_t wlen = write(STDOUT_FILENO, dump, sizeof(dump) - 1);
+				if (wlen < 0) err(EX_IOERR, "write");
+				continue;
+			}
+
+			ssize_t wlen = write(pty, buf, rlen);
+			if (wlen < 0) err(EX_IOERR, "write");
+		}
+
+		if (fds[1].revents & POLLIN) {
+			ssize_t rlen = read(pty, buf, sizeof(buf));
+			if (rlen < 0) err(EX_IOERR, "read");
+
+			ssize_t wlen = write(STDIN_FILENO, buf, rlen);
+			if (wlen < 0) err(EX_IOERR, "write");
+
+			if (!stop) {
+				wlen = write(STDOUT_FILENO, buf, rlen);
+				if (wlen < 0) err(EX_IOERR, "write");
+			}
+		}
+
+		int status;
+		pid_t dead = waitpid(pid, &status, WNOHANG);
+		if (dead < 0) err(EX_OSERR, "waitpid");
+		if (dead) return WIFEXITED(status) ? WEXITSTATUS(status) : EX_SOFTWARE;
+	}
+	err(EX_IOERR, "poll");
+}
diff --git a/bin/relay.c b/bin/relay.c
new file mode 100644
index 00000000..aa7913c9
--- /dev/null
+++ b/bin/relay.c
@@ -0,0 +1,218 @@
+/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Additional permission under GNU GPL version 3 section 7:
+ *
+ * If you modify this Program, or any covered work, by linking or
+ * combining it with LibreSSL (or a modified version of that library),
+ * containing parts covered by the terms of the OpenSSL License and the
+ * original SSLeay license, the licensors of this Program grant you
+ * additional permission to convey the resulting work. Corresponding
+ * Source for a non-source form of such a combination shall include the
+ * source code for the parts of LibreSSL used as well as that of the
+ * covered work.
+ */
+
+#include <err.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <poll.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sysexits.h>
+#include <tls.h>
+#include <unistd.h>
+
+#ifdef __FreeBSD__
+#include <sys/capsicum.h>
+#endif
+
+static void clientWrite(struct tls *client, const char *ptr, size_t len) {
+	while (len) {
+		ssize_t ret = tls_write(client, ptr, len);
+		if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue;
+		if (ret < 0) errx(EX_IOERR, "tls_write: %s", tls_error(client));
+		ptr += ret;
+		len -= ret;
+	}
+}
+
+static void clientFormat(struct tls *client, const char *format, ...) {
+	char buf[1024];
+	va_list ap;
+	va_start(ap, format);
+	int len = vsnprintf(buf, sizeof(buf), format, ap);
+	va_end(ap);
+	if ((size_t)len > sizeof(buf) - 1) errx(EX_DATAERR, "message too large");
+	clientWrite(client, buf, len);
+}
+
+static void clientHandle(struct tls *client, const char *chan, char *line) {
+	char *prefix = NULL;
+	if (line[0] == ':') {
+		prefix = strsep(&line, " ") + 1;
+		if (!line) errx(EX_PROTOCOL, "unexpected eol");
+	}
+
+	char *command = strsep(&line, " ");
+	if (!strcmp(command, "001") || !strcmp(command, "INVITE")) {
+		clientFormat(client, "JOIN :%s\r\n", chan);
+	} else if (!strcmp(command, "PING")) {
+		clientFormat(client, "PONG %s\r\n", line);
+	}
+	if (strcmp(command, "PRIVMSG") && strcmp(command, "NOTICE")) return;
+
+	if (!prefix) errx(EX_PROTOCOL, "message without prefix");
+	char *nick = strsep(&prefix, "!");
+
+	if (!line) errx(EX_PROTOCOL, "message without destination");
+	char *dest = strsep(&line, " ");
+	if (strcmp(dest, chan)) return;
+
+	if (!line || line[0] != ':') errx(EX_PROTOCOL, "message without message");
+	line = &line[1];
+
+	if (!strncmp(line, "\1ACTION ", 8)) {
+		line = &line[8];
+		size_t len = strcspn(line, "\1");
+		printf("* %c\u200C%s %.*s\n", nick[0], &nick[1], (int)len, line);
+	} else if (command[0] == 'N') {
+		printf("-%c\u200C%s- %s\n", nick[0], &nick[1], line);
+	} else {
+		printf("<%c\u200C%s> %s\n", nick[0], &nick[1], line);
+	}
+}
+
+#ifdef __FreeBSD__
+static void limit(int fd, const cap_rights_t *rights) {
+	int error = cap_rights_limit(fd, rights);
+	if (error) err(EX_OSERR, "cap_rights_limit");
+}
+#endif
+
+int main(int argc, char *argv[]) {
+	int error;
+
+	if (argc < 5) return EX_USAGE;
+	const char *host = argv[1];
+	const char *port = argv[2];
+	const char *nick = argv[3];
+	const char *chan = argv[4];
+
+	setlinebuf(stdout);
+	signal(SIGPIPE, SIG_IGN);
+
+	struct tls_config *config = tls_config_new();
+	if (!config) errx(EX_SOFTWARE, "tls_config_new");
+
+	error = tls_config_set_ciphers(config, "compat");
+	if (error) {
+		errx(EX_SOFTWARE, "tls_config_set_ciphers: %s", tls_config_error(config));
+	}
+
+	struct tls *client = tls_client();
+	if (!client) errx(EX_SOFTWARE, "tls_client");
+
+	error = tls_configure(client, config);
+	if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(client));
+	tls_config_free(config);
+
+	struct addrinfo *head;
+	struct addrinfo hints = {
+		.ai_family = AF_UNSPEC,
+		.ai_socktype = SOCK_STREAM,
+		.ai_protocol = IPPROTO_TCP,
+	};
+	error = getaddrinfo(host, port, &hints, &head);
+	if (error) errx(EX_NOHOST, "getaddrinfo: %s", gai_strerror(error));
+
+	int sock = -1;
+	for (struct addrinfo *ai = head; ai; ai = ai->ai_next) {
+		sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+		if (sock < 0) err(EX_OSERR, "socket");
+
+		error = connect(sock, ai->ai_addr, ai->ai_addrlen);
+		if (!error) break;
+
+		close(sock);
+		sock = -1;
+	}
+	if (sock < 0) err(EX_UNAVAILABLE, "connect");
+	freeaddrinfo(head);
+
+	error = tls_connect_socket(client, sock, host);
+	if (error) errx(EX_PROTOCOL, "tls_connect: %s", tls_error(client));
+
+#ifdef __FreeBSD__
+	error = cap_enter();
+	if (error) err(EX_OSERR, "cap_enter");
+
+	cap_rights_t rights;
+	cap_rights_init(&rights, CAP_WRITE);
+	limit(STDOUT_FILENO, &rights);
+	limit(STDERR_FILENO, &rights);
+
+	cap_rights_init(&rights, CAP_EVENT, CAP_READ);
+	limit(STDIN_FILENO, &rights);
+
+	cap_rights_set(&rights, CAP_WRITE);
+	limit(sock, &rights);
+#endif
+
+	clientFormat(client, "NICK :%s\r\nUSER %s 0 * :%s\r\n", nick, nick, nick);
+
+	char *input = NULL;
+	size_t cap = 0;
+
+	char buf[4096];
+	size_t len = 0;
+
+	struct pollfd fds[2] = {
+		{ .events = POLLIN, .fd = STDIN_FILENO },
+		{ .events = POLLIN, .fd = sock },
+	};
+	while (0 < poll(fds, 2, -1)) {
+		if (fds[0].revents) {
+			ssize_t len = getline(&input, &cap, stdin);
+			if (len < 0) err(EX_IOERR, "getline");
+			input[len - 1] = '\0';
+			clientFormat(client, "NOTICE %s :%s\r\n", chan, input);
+		}
+		if (!fds[1].revents) continue;
+
+		ssize_t read = tls_read(client, &buf[len], sizeof(buf) - len);
+		if (read == TLS_WANT_POLLIN || read == TLS_WANT_POLLOUT) continue;
+		if (read < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client));
+		if (!read) return EX_UNAVAILABLE;
+		len += read;
+
+		char *crlf;
+		char *line = buf;
+		for (;;) {
+			crlf = memmem(line, &buf[len] - line, "\r\n", 2);
+			if (!crlf) break;
+			crlf[0] = '\0';
+			clientHandle(client, chan, line);
+			line = &crlf[2];
+		}
+		len -= line - buf;
+		memmove(buf, line, len);
+	}
+	err(EX_IOERR, "poll");
+}
diff --git a/bin/scheme.c b/bin/scheme.c
new file mode 100644
index 00000000..33fd8b60
--- /dev/null
+++ b/bin/scheme.c
@@ -0,0 +1,278 @@
+/* Copyright (C) 2018, 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <err.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#include "png.h"
+
+typedef unsigned uint;
+typedef unsigned char byte;
+
+struct HSV {
+	double h, s, v;
+};
+
+struct RGB {
+	byte r, g, b;
+};
+
+static struct RGB convert(struct HSV o) {
+	double c = o.v * o.s;
+	double h = o.h / 60.0;
+	double x = c * (1.0 - fabs(fmod(h, 2.0) - 1.0));
+	double m = o.v - c;
+	double r = m, g = m, b = m;
+	if      (h <= 1.0) { r += c; g += x; }
+	else if (h <= 2.0) { r += x; g += c; }
+	else if (h <= 3.0) { g += c; b += x; }
+	else if (h <= 4.0) { g += x; b += c; }
+	else if (h <= 5.0) { r += x; b += c; }
+	else if (h <= 6.0) { r += c; b += x; }
+	return (struct RGB) { r * 255.0, g * 255.0, b * 255.0 };
+}
+
+static const struct HSV
+R = {   0.0, 1.0, 1.0 },
+Y = {  60.0, 1.0, 1.0 },
+G = { 120.0, 1.0, 1.0 },
+C = { 180.0, 1.0, 1.0 },
+B = { 240.0, 1.0, 1.0 },
+M = { 300.0, 1.0, 1.0 };
+
+static struct HSV x(struct HSV o, double hd, double sf, double vf) {
+	return (struct HSV) {
+		fmod(o.h + hd, 360.0),
+		fmin(o.s * sf, 1.0),
+		fmin(o.v * vf, 1.0),
+	};
+}
+
+enum {
+	Black, Red, Green, Yellow, Blue, Magenta, Cyan, White,
+	Dark = 0,
+	Light = 8,
+	Background = 16,
+	Foreground,
+	Bold,
+	Selection,
+	Cursor,
+	SchemeLen,
+};
+static struct HSV scheme[SchemeLen];
+static struct HSV *dark = &scheme[Dark];
+static struct HSV *light = &scheme[Light];
+
+static void generate(void) {
+	light[Black]   = x(R, +45.0, 0.3, 0.3);
+	light[Red]     = x(R, +10.0, 0.9, 0.8);
+	light[Green]   = x(G, -55.0, 0.8, 0.6);
+	light[Yellow]  = x(Y, -20.0, 0.8, 0.8);
+	light[Blue]    = x(B, -55.0, 0.4, 0.5);
+	light[Magenta] = x(M, +45.0, 0.4, 0.6);
+	light[Cyan]    = x(C, -60.0, 0.3, 0.6);
+	light[White]   = x(R, +45.0, 0.3, 0.8);
+
+	dark[Black] = x(light[Black], 0.0, 1.0, 0.3);
+	dark[White] = x(light[White], 0.0, 1.0, 0.75);
+	for (uint i = Red; i < White; ++i) {
+		dark[i] = x(light[i], 0.0, 1.0, 0.8);
+	}
+
+	scheme[Background] = x(dark[Black],  0.0, 1.0, 0.9);
+	scheme[Foreground] = x(light[White], 0.0, 1.0, 0.9);
+	scheme[Bold]       = x(light[White], 0.0, 1.0, 1.0);
+	scheme[Selection]  = x(light[Red], +10.0, 1.0, 0.8);
+	scheme[Cursor]     = x(dark[White],  0.0, 1.0, 0.8);
+}
+
+static void swap(struct HSV *a, struct HSV *b) {
+	struct HSV c = *a;
+	*a = *b;
+	*b = c;
+}
+
+static void invert(void) {
+	swap(&dark[Black], &light[White]);
+	swap(&dark[White], &light[Black]);
+}
+
+typedef void OutputFn(const struct HSV *hsv, uint len);
+
+static void outputHSV(const struct HSV *hsv, uint len) {
+	for (uint i = 0; i < len; ++i) {
+		printf("%g,%g,%g\n", hsv[i].h, hsv[i].s, hsv[i].v);
+	}
+}
+
+#define FORMAT_RGB "%02hhX%02hhX%02hhX"
+
+static void outputRGB(const struct HSV *hsv, uint len) {
+	for (uint i = 0; i < len; ++i) {
+		struct RGB rgb = convert(hsv[i]);
+		printf(FORMAT_RGB "\n", rgb.r, rgb.g, rgb.b);
+	}
+}
+
+static void outputLinux(const struct HSV *hsv, uint len) {
+	for (uint i = 0; i < len; ++i) {
+		struct RGB rgb = convert(hsv[i]);
+		printf("\x1B]P%X" FORMAT_RGB, i, rgb.r, rgb.g, rgb.b);
+	}
+}
+
+static const char *Enum[SchemeLen] = {
+	"DarkBlack", "DarkRed", "DarkGreen", "DarkYellow",
+	"DarkBlue", "DarkMagenta", "DarkCyan", "DarkWhite",
+	"LightBlack", "LightRed", "LightGreen", "LightYellow",
+	"LightBlue", "LightMagenta", "LightCyan", "LightWhite",
+	"Background", "Foreground", "Bold", "Selection", "Cursor",
+};
+
+static void outputEnum(const struct HSV *hsv, uint len) {
+	printf("enum {\n");
+	for (uint i = 0; i < len; ++i) {
+		struct RGB rgb = convert(hsv[i]);
+		printf("\t%s = 0x" FORMAT_RGB ",\n", Enum[i], rgb.r, rgb.g, rgb.b);
+	}
+	printf("};\n");
+}
+
+#define FORMAT_X "rgb:%02hhX/%02hhX/%02hhX"
+
+static const char *Resources[SchemeLen] = {
+	[Background] = "background",
+	[Foreground] = "foreground",
+	[Bold] = "colorBD",
+	[Selection] = "highlightColor",
+	[Cursor] = "cursorColor",
+};
+
+static void outputXTerm(const struct HSV *hsv, uint len) {
+	for (uint i = 0; i < len; ++i) {
+		struct RGB rgb = convert(hsv[i]);
+		if (Resources[i]) {
+			printf("XTerm*%s: " FORMAT_X "\n", Resources[i], rgb.r, rgb.g, rgb.b);
+		} else {
+			printf("XTerm*color%u: " FORMAT_X "\n", i, rgb.r, rgb.g, rgb.b);
+		}
+	}
+}
+
+static const char *Mintty[SchemeLen] = {
+	"Black", "Red", "Green", "Yellow",
+	"Blue", "Magenta", "Cyan", "White",
+	"BoldBlack", "BoldRed", "BoldGreen", "BoldYellow",
+	"BoldBlue", "BoldMagenta", "BoldCyan", "BoldWhite",
+	[Background] = "BackgroundColour",
+	[Foreground] = "ForegroundColour",
+	[Cursor]     = "CursorColour",
+};
+
+static void outputMintty(const struct HSV *hsv, uint len) {
+	for (uint i = 0; i < len; ++i) {
+		if (!Mintty[i]) continue;
+		struct RGB rgb = convert(hsv[i]);
+		printf("%s=%hhu,%hhu,%hhu\n", Mintty[i], rgb.r, rgb.g, rgb.b);
+	}
+}
+
+static void outputCSS(const struct HSV *hsv, uint len) {
+	printf(":root {\n");
+	for (uint i = 0; i < len; ++i) {
+		struct RGB rgb = convert(hsv[i]);
+		printf("\t--ansi%u: #" FORMAT_RGB ";\n", i, rgb.r, rgb.g, rgb.b);
+	}
+	printf("}\n");
+	for (uint i = 0; i < len; ++i) {
+		printf(
+			".fg%u { color: var(--ansi%u); }\n"
+			".bg%u { background-color: var(--ansi%u); }\n",
+			i, i, i, i
+		);
+	}
+}
+
+enum {
+	SwatchWidth = 64,
+	SwatchHeight = 64,
+	SwatchCols = 8,
+};
+
+static void outputPNG(const struct HSV *hsv, uint len) {
+	uint rows = (len + SwatchCols - 1) / SwatchCols;
+	uint width = SwatchWidth * SwatchCols;
+	uint height = SwatchHeight * rows;
+	pngHead(stdout, width, height, 8, PNGIndexed);
+
+	struct RGB pal[len];
+	for (uint i = 0; i < len; ++i) {
+		pal[i] = convert(hsv[i]);
+	}
+	pngPalette(stdout, (byte *)pal, sizeof(pal));
+
+	byte data[height][1 + width];
+	memset(data, 0, sizeof(data));
+	for (uint y = 0; y < height; ++y) {
+		data[y][0] = (y % SwatchHeight ? PNGUp : PNGSub);
+	}
+	for (uint i = 0; i < len; ++i) {
+		uint y = SwatchHeight * (i / SwatchCols);
+		uint x = SwatchWidth * (i % SwatchCols);
+		data[y][1 + x] = (x ? 1 : i);
+	}
+	pngData(stdout, (byte *)data, sizeof(data));
+	pngTail(stdout);
+}
+
+int main(int argc, char *argv[]) {
+	generate();
+
+	OutputFn *output = outputRGB;
+	const struct HSV *hsv = scheme;
+	uint len = 16;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "Xacghilmp:stx"))) {
+		switch (opt) {
+			break; case 'X': output = outputXTerm;
+			break; case 'a': len = 16;
+			break; case 'c': output = outputEnum;
+			break; case 'g': output = outputPNG;
+			break; case 'h': output = outputHSV;
+			break; case 'i': invert();
+			break; case 'l': output = outputLinux;
+			break; case 'm': output = outputMintty;
+			break; case 'p': {
+				uint p = strtoul(optarg, NULL, 0);
+				if (p >= SchemeLen) return EX_USAGE;
+				hsv = &scheme[p];
+				len = 1;
+			}
+			break; case 's': output = outputCSS;
+			break; case 't': len = SchemeLen;
+			break; case 'x': output = outputRGB;
+			break; default:  return EX_USAGE;
+		}
+	}
+
+	output(hsv, len);
+}
diff --git a/bin/sh.l b/bin/sh.l
new file mode 100644
index 00000000..b27ecebc
--- /dev/null
+++ b/bin/sh.l
@@ -0,0 +1,178 @@
+/* Copyright (C) 2021  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+%option prefix="sh"
+%option noyywrap
+
+%{
+#include <assert.h>
+#include <stdbool.h>
+#include <string.h>
+#include "hilex.h"
+
+enum { Cap = 64 };
+static int len = 1;
+static int stack[Cap];
+static int push(int val) {
+	if (len < Cap) stack[len++] = val;
+	return val;
+}
+static int pop(void) {
+	if (len > 1) len--;
+	return stack[len-1];
+}
+%}
+
+%s Param Command Arith Backtick
+%x DQuote HereDocDel HereDoc HereDocLit
+
+word [[:alnum:]_.-]+
+param [^:=?+%#{}-]+
+reserved [!{}]|else|do|elif|for|done|fi|then|until|while|if|case|esac
+
+%%
+	static bool first;
+	static char *delimiter;
+
+[[:blank:]]+ { return Normal; }
+
+"\\". { return Escape; }
+
+<INITIAL,DQuote,HereDoc,Param,Command,Arith>{
+	"$"[*@#?$!0-9-] |
+	"$"[_[:alpha:][_[:alnum:]]* |
+	"${"[#]?{param}"}" {
+		return Subst;
+	}
+	"${"{param} {
+		BEGIN(push(Param));
+		return Subst;
+	}
+	"$(" {
+		BEGIN(push(Command));
+		return Subst;
+	}
+	"$((" {
+		BEGIN(push(Arith));
+		return Subst;
+	}
+	"`" {
+		BEGIN(push(Backtick));
+		return Subst;
+	}
+}
+<Param>"}" |
+<Command>")" |
+<Arith>"))" |
+<Backtick>"`" {
+	BEGIN(pop());
+	return Subst;
+}
+
+"\n" {
+	first = true;
+	return Normal;
+}
+[&();|]|"&&"|";;"|"||" {
+	first = true;
+	return Operator;
+}
+[0-9]?([<>]"&"?|">|"|">>"|"<>") {
+	return Operator;
+}
+
+{reserved} {
+	if (first) {
+		first = false;
+		return Keyword;
+	}
+	return Normal;
+}
+
+{word}/[[:blank:]]*"()" { return Ident; }
+
+[0-9]?("<<"|"<<-") {
+	BEGIN(push(HereDocDel));
+	return Operator;
+}
+<HereDocDel>{
+	[[:blank:]]+ { return Normal; }
+	{word} {
+		delimiter = strdup(yytext);
+		assert(delimiter);
+		BEGIN(pop(), push(HereDoc));
+		return Ident;
+	}
+	"'"{word}"'" {
+		delimiter = strndup(&yytext[1], strlen(yytext)-2);
+		assert(delimiter);
+		BEGIN(pop(), push(HereDocLit));
+		return Ident;
+	}
+}
+<HereDoc,HereDocLit>{
+	^"\t"*{word} {
+		if (strcmp(&yytext[strspn(yytext, "\t")], delimiter)) REJECT;
+		free(delimiter);
+		BEGIN(pop());
+		return Ident;
+	}
+}
+<HereDoc>{
+	[^$`\n]+ { return String; }
+	.|\n { return String; }
+}
+<HereDocLit>{
+	.*\n { return String; }
+}
+
+"'"[^'']*"'" { return String; }
+
+"\""/[^$`\\] {
+	BEGIN(push(DQuote));
+	yymore();
+}
+"\"" {
+	BEGIN(push(DQuote));
+	return String;
+}
+
+<DQuote>{
+	[^\\$`""]*"\"" {
+		BEGIN(pop());
+		return String;
+	}
+	"\\"[$`""\\\n] { return Escape; }
+	[^\\$`""]+|. { return String; }
+}
+
+<INITIAL,Command,Backtick,Arith>"#".* { return Comment; }
+
+{word} {
+	first = false;
+	return Normal;
+}
+
+.|\n { return Normal; }
+
+%{
+	(void)yyunput;
+	(void)input;
+%}
+
+%%
+
+const struct Lexer LexSh = { yylex, &yyin, &yytext };
diff --git a/bin/shotty.c b/bin/shotty.c
new file mode 100644
index 00000000..83b00313
--- /dev/null
+++ b/bin/shotty.c
@@ -0,0 +1,648 @@
+/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <assert.h>
+#include <err.h>
+#include <locale.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sysexits.h>
+#include <unistd.h>
+#include <wchar.h>
+
+#define BIT(x) x##Bit, x = 1 << x##Bit, x##Bit_ = x##Bit
+
+typedef unsigned uint;
+
+enum {
+	NUL, SOH, STX, ETX, EOT, ENQ, ACK, BEL,
+	BS, HT, NL, VT, NP, CR, SO, SI,
+	DLE, DC1, DC2, DC3, DC4, NAK, SYN, ETB,
+	CAN, EM, SUB, ESC, FS, GS, RS, US,
+	DEL = 0x7F,
+};
+
+enum Attr {
+	BIT(Bold),
+	BIT(Dim),
+	BIT(Italic),
+	BIT(Underline),
+	BIT(Blink),
+	BIT(Reverse),
+};
+
+struct Style {
+	enum Attr attr;
+	int bg, fg;
+};
+
+struct Cell {
+	struct Style style;
+	wchar_t ch;
+};
+
+static uint rows = 24, cols = 80;
+static struct Cell *cells;
+
+static struct Cell *cell(uint y, uint x) {
+	assert(y <= rows);
+	assert(x <= cols);
+	assert(y * cols + x <= rows * cols);
+	return &cells[y * cols + x];
+}
+
+static uint y, x;
+static struct Style style = { .bg = -1, .fg = -1 };
+
+static struct {
+	uint y, x;
+} save;
+
+enum { ParamCap = 16 };
+static struct {
+	uint s[ParamCap];
+	uint n, i;
+} param;
+
+static uint p(uint i, uint z) {
+	return (i < param.n ? param.s[i] : z);
+}
+
+static uint min(uint a, uint b) {
+	return (a < b ? a : b);
+}
+
+#define _ch ch __attribute__((unused))
+typedef void Action(wchar_t ch);
+
+static void nop(wchar_t _ch) {
+}
+
+static void csi(wchar_t _ch) {
+	memset(&param, 0, sizeof(param));
+}
+
+static void csiSep(wchar_t _ch) {
+	if (param.n == ParamCap) return;
+	if (!param.n) param.n++;
+	param.n++;
+	param.i++;
+}
+
+static void csiDigit(wchar_t ch) {
+	param.s[param.i] *= 10;
+	param.s[param.i] += ch - L'0';
+	if (!param.n) param.n++;
+}
+
+static void bs(wchar_t _ch)  { if (x) x--; }
+static void ht(wchar_t _ch)  { x = min(x - x % 8 + 8, cols - 1); }
+static void cr(wchar_t _ch)  { x = 0; }
+static void cuu(wchar_t _ch) { y -= min(p(0, 1), y); }
+static void cud(wchar_t _ch) { y  = min(y + p(0, 1), rows - 1); }
+static void cuf(wchar_t _ch) { x  = min(x + p(0, 1), cols - 1); }
+static void cub(wchar_t _ch) { x -= min(p(0, 1), x); }
+static void cnl(wchar_t _ch) { x = 0; cud(0); }
+static void cpl(wchar_t _ch) { x = 0; cuu(0); }
+static void cha(wchar_t _ch) { x = min(p(0, 1) - 1, cols - 1); }
+static void vpa(wchar_t _ch) { y = min(p(0, 1) - 1, rows - 1); }
+static void cup(wchar_t _ch) {
+	y = min(p(0, 1) - 1, rows - 1);
+	x = min(p(1, 1) - 1, cols - 1);
+}
+static void decsc(wchar_t _ch) {
+	save.y = y;
+	save.x = x;
+}
+static void decrc(wchar_t _ch) {
+	y = save.y;
+	x = save.x;
+}
+
+static void move(struct Cell *dst, struct Cell *src, size_t len) {
+	memmove(dst, src, sizeof(*dst) * len);
+}
+
+static void erase(struct Cell *at, struct Cell *to) {
+	for (; at < to; ++at) {
+		at->style = style;
+		at->ch = L' ';
+	}
+}
+
+static void ed(wchar_t _ch) {
+	erase(
+		(p(0, 0) == 0 ? cell(y, x) : cell(0, 0)),
+		(p(0, 0) == 1 ? cell(y, x) : cell(rows - 1, cols))
+	);
+}
+static void el(wchar_t _ch) {
+	erase(
+		(p(0, 0) == 0 ? cell(y, x) : cell(y, 0)),
+		(p(0, 0) == 1 ? cell(y, x) : cell(y, cols))
+	);
+}
+static void ech(wchar_t _ch) {
+	erase(cell(y, x), cell(y, min(x + p(0, 1), cols)));
+}
+
+static void dch(wchar_t _ch) {
+	uint n = min(p(0, 1), cols - x);
+	move(cell(y, x), cell(y, x + n), cols - x - n);
+	erase(cell(y, cols - n), cell(y, cols));
+}
+static void ich(wchar_t _ch) {
+	uint n = min(p(0, 1), cols - x);
+	move(cell(y, x + n), cell(y, x), cols - x - n);
+	erase(cell(y, x), cell(y, x + n));
+}
+
+static struct {
+	uint top, bot;
+} scroll;
+
+static void scrollUp(uint top, uint n) {
+	n = min(n, scroll.bot - top);
+	move(cell(top, 0), cell(top + n, 0), cols * (scroll.bot - top - n));
+	erase(cell(scroll.bot - n, 0), cell(scroll.bot, 0));
+}
+
+static void scrollDown(uint top, uint n) {
+	n = min(n, scroll.bot - top);
+	move(cell(top + n, 0), cell(top, 0), cols * (scroll.bot - top - n));
+	erase(cell(top, 0), cell(top + n, 0));
+}
+
+static void decstbm(wchar_t _ch) {
+	scroll.bot = min(p(1, rows), rows);
+	scroll.top = min(p(0, 1) - 1, scroll.bot);
+}
+
+static void su(wchar_t _ch) { scrollUp(scroll.top, p(0, 1)); }
+static void sd(wchar_t _ch) { scrollDown(scroll.top, p(0, 1)); }
+static void dl(wchar_t _ch) { scrollUp(min(y, scroll.bot), p(0, 1)); }
+static void il(wchar_t _ch) { scrollDown(min(y, scroll.bot), p(0, 1)); }
+
+static void nl(wchar_t _ch) {
+	if (y + 1 == scroll.bot) {
+		scrollUp(scroll.top, 1);
+	} else {
+		y = min(y + 1, rows - 1);
+	}
+}
+static void ri(wchar_t _ch) {
+	if (y == scroll.top) {
+		scrollDown(scroll.top, 1);
+	} else {
+		if (y) y--;
+	}
+}
+
+static enum Mode {
+	BIT(Insert),
+	BIT(Wrap),
+	BIT(Cursor),
+} mode = Wrap | Cursor;
+
+static enum Mode paramMode(void) {
+	enum Mode mode = 0;
+	for (uint i = 0; i < param.n; ++i) {
+		switch (param.s[i]) {
+			break; case 4: mode |= Insert;
+			break; default: warnx("unhandled SM/RM %u", param.s[i]);
+		}
+	}
+	return mode;
+}
+
+static enum Mode paramDECMode(void) {
+	enum Mode mode = 0;
+	for (uint i = 0; i < param.n; ++i) {
+		switch (param.s[i]) {
+			break; case 1: // DECCKM
+			break; case 7: mode |= Wrap;
+			break; case 12: // "Start Blinking Cursor"
+			break; case 25: mode |= Cursor;
+			break; default: {
+				if (param.s[i] < 1000) {
+					warnx("unhandled DECSET/DECRST %u", param.s[i]);
+				}
+			}
+		}
+	}
+	return mode;
+}
+
+static void sm(wchar_t _ch) { mode |= paramMode(); }
+static void rm(wchar_t _ch) { mode &= ~paramMode(); }
+static void decset(wchar_t _ch) { mode |= paramDECMode(); }
+static void decrst(wchar_t _ch) { mode &= ~paramDECMode(); }
+
+enum {
+	Reset,
+	SetBold,
+	SetDim,
+	SetItalic,
+	SetUnderline,
+	SetBlink,
+	SetReverse = 7,
+
+	UnsetBoldDim = 22,
+	UnsetItalic,
+	UnsetUnderline,
+	UnsetBlink,
+	UnsetReverse = 27,
+
+	SetFg0 = 30,
+	SetFg7 = 37,
+	SetFg,
+	ResetFg,
+	SetBg0 = 40,
+	SetBg7 = 47,
+	SetBg,
+	ResetBg,
+
+	SetFg8 = 90,
+	SetFgF = 97,
+	SetBg8 = 100,
+	SetBgF = 107,
+
+	Color256 = 5,
+};
+
+static void sgr(wchar_t _ch) {
+	uint n = param.i + 1;
+	for (uint i = 0; i < n; ++i) {
+		switch (param.s[i]) {
+			break; case Reset: style = (struct Style) { .bg = -1, .fg = -1 };
+
+			break; case SetBold:      style.attr |= Bold; style.attr &= ~Dim;
+			break; case SetDim:       style.attr |= Dim; style.attr &= ~Bold;
+			break; case SetItalic:    style.attr |= Italic;
+			break; case SetUnderline: style.attr |= Underline;
+			break; case SetBlink:     style.attr |= Blink;
+			break; case SetReverse:   style.attr |= Reverse;
+
+			break; case UnsetBoldDim:   style.attr &= ~(Bold | Dim);
+			break; case UnsetItalic:    style.attr &= ~Italic;
+			break; case UnsetUnderline: style.attr &= ~Underline;
+			break; case UnsetBlink:     style.attr &= ~Blink;
+			break; case UnsetReverse:   style.attr &= ~Reverse;
+
+			break; case SetFg: {
+				if (++i < n && param.s[i] == Color256) {
+					if (++i < n) style.fg = param.s[i];
+				}
+			}
+			break; case SetBg: {
+				if (++i < n && param.s[i] == Color256) {
+					if (++i < n) style.bg = param.s[i];
+				}
+			}
+
+			break; case ResetFg: style.fg = -1;
+			break; case ResetBg: style.bg = -1;
+
+			break; default: {
+				uint p = param.s[i];
+				if (p >= SetFg0 && p <= SetFg7) {
+					style.fg = p - SetFg0;
+				} else if (p >= SetBg0 && p <= SetBg7) {
+					style.bg = p - SetBg0;
+				} else if (p >= SetFg8 && p <= SetFgF) {
+					style.fg = 8 + p - SetFg8;
+				} else if (p >= SetBg8 && p <= SetBgF) {
+					style.bg = 8 + p - SetBg8;
+				} else {
+					warnx("unhandled SGR %u", p);
+				}
+			}
+		}
+	}
+}
+
+static enum {
+	USASCII,
+	DECSpecial,
+} charset;
+
+static void usascii(wchar_t _ch) { charset = USASCII; }
+static void decSpecial(wchar_t _ch) { charset = DECSpecial; }
+
+static const wchar_t AltCharset[128] = {
+	['`'] = L'◆', ['a'] = L'▒', ['f'] = L'°', ['g'] = L'±', ['i'] = L'␋',
+	['j'] = L'┘', ['k'] = L'┐', ['l'] = L'┌', ['m'] = L'└', ['n'] = L'┼',
+	['o'] = L'⎺', ['p'] = L'⎻', ['q'] = L'─', ['r'] = L'⎼', ['s'] = L'⎽',
+	['t'] = L'├', ['u'] = L'┤', ['v'] = L'┴', ['w'] = L'┬', ['x'] = L'│',
+	['y'] = L'≤', ['z'] = L'≥', ['{'] = L'π', ['|'] = L'≠', ['}'] = L'£',
+	['~'] = L'·',
+};
+
+static void add(wchar_t ch) {
+	if (charset == DECSpecial && ch < 128 && AltCharset[ch]) {
+		ch = AltCharset[ch];
+	}
+
+	int width = wcwidth(ch);
+	if (width < 0) {
+		warnx("unhandled \\u%02X", ch);
+		return;
+	}
+
+	if (mode & Insert) {
+		uint n = min(width, cols - x);
+		move(cell(y, x + n), cell(y, x), cols - x - n);
+	}
+	if (mode & Wrap && x + width > cols) {
+		cr(0);
+		nl(0);
+	}
+
+	cell(y, x)->style = style;
+	cell(y, x)->ch = ch;
+	for (int i = 1; i < width && x + i < cols; ++i) {
+		cell(y, x + i)->style = style;
+		cell(y, x + i)->ch = L'\0';
+	}
+	x = min(x + width, (mode & Wrap ? cols : cols - 1));
+}
+
+static void html(void);
+static void mc(wchar_t _ch) {
+	if (p(0, 0) == 10) {
+		html();
+	} else {
+		warnx("unhandled CSI %u MC", p(0, 0));
+	}
+}
+
+static enum {
+	Data,
+	Esc,
+	G0,
+	CSI,
+	CSILt,
+	CSIEq,
+	CSIGt,
+	CSIQm,
+	CSIInter,
+	OSC,
+	OSCEsc,
+} state;
+
+static void escDefault(wchar_t ch) {
+	warnx("unhandled ESC %lc", ch);
+}
+
+static void g0Default(wchar_t ch) {
+	warnx("unhandled G0 %lc", ch);
+	charset = USASCII;
+}
+
+static void csiInter(wchar_t ch) {
+	switch (state) {
+		break; case CSI: warnx("unhandled CSI %lc ...", ch);
+		break; case CSILt: warnx("unhandled CSI < %lc ...", ch);
+		break; case CSIEq: warnx("unhandled CSI = %lc ...", ch);
+		break; case CSIGt: warnx("unhandled CSI > %lc ...", ch);
+		break; case CSIQm: warnx("unhandled CSI ? %lc ...", ch);
+		break; default: abort();
+	}
+}
+
+static void csiFinal(wchar_t ch) {
+	switch (state) {
+		break; case CSI: warnx("unhandled CSI %lc", ch);
+		break; case CSILt: warnx("unhandled CSI < %lc", ch);
+		break; case CSIEq: warnx("unhandled CSI = %lc", ch);
+		break; case CSIGt: warnx("unhandled CSI > %lc", ch);
+		break; case CSIQm: warnx("unhandled CSI ? %lc", ch);
+		break; case CSIInter: warnx("unhandled CSI ... %lc", ch);
+		break; default: abort();
+	}
+}
+
+#define S(s) break; case s: switch (ch)
+#define A(c, a, s) break; case c: a(ch); state = s
+#define D(a, s) break; default: a(ch); state = s
+static void update(wchar_t ch) {
+	switch (state) {
+		default: abort();
+
+		S(Data) {
+			A(BEL, nop, Data);
+			A(BS,  bs,  Data);
+			A(HT,  ht,  Data);
+			A(NL,  nl,  Data);
+			A(CR,  cr,  Data);
+			A(ESC, nop, Esc);
+			D(add, Data);
+		}
+
+		S(Esc) {
+			A('(', nop, G0);
+			A('7', decsc, Data);
+			A('8', decrc, Data);
+			A('=', nop, Data);
+			A('>', nop, Data);
+			A('M', ri,  Data);
+			A('[', csi, CSI);
+			A(']', nop, OSC);
+			D(escDefault, Data);
+		}
+		S(G0) {
+			A('0', decSpecial, Data);
+			A('B', usascii, Data);
+			D(g0Default, Data);
+		}
+
+		S(CSI) {
+			A(' ' ... '/', csiInter, CSIInter);
+			A('0' ... '9', csiDigit, CSI);
+			A(':', nop, CSI);
+			A(';', csiSep, CSI);
+			A('<', nop, CSILt);
+			A('=', nop, CSIEq);
+			A('>', nop, CSIGt);
+			A('?', nop, CSIQm);
+			A('@', ich, Data);
+			A('A', cuu, Data);
+			A('B', cud, Data);
+			A('C', cuf, Data);
+			A('D', cub, Data);
+			A('E', cnl, Data);
+			A('F', cpl, Data);
+			A('G', cha, Data);
+			A('H', cup, Data);
+			A('J', ed,  Data);
+			A('K', el,  Data);
+			A('L', il,  Data);
+			A('M', dl,  Data);
+			A('P', dch, Data);
+			A('S', su,  Data);
+			A('T', sd,  Data);
+			A('X', ech, Data);
+			A('d', vpa, Data);
+			A('h', sm,  Data);
+			A('i', mc,  Data);
+			A('l', rm,  Data);
+			A('m', sgr, Data);
+			A('r', decstbm, Data);
+			A('t', nop, Data);
+			D(csiFinal, Data);
+		}
+
+		S(CSILt ... CSIGt) {
+			A(' ' ... '/', csiInter, CSIInter);
+			A('0' ... '9', csiDigit, state);
+			A(':', nop, state);
+			A(';', csiSep, state);
+			D(csiFinal, Data);
+		}
+
+		S(CSIQm) {
+			A(' ' ... '/', csiInter, CSIInter);
+			A('0' ... '9', csiDigit, CSIQm);
+			A(':', nop, CSIQm);
+			A(';', csiSep, CSIQm);
+			A('h', decset, Data);
+			A('l', decrst, Data);
+			D(csiFinal, Data);
+		}
+
+		S(CSIInter) {
+			D(csiFinal, Data);
+		}
+
+		S(OSC) {
+			A(BEL, nop, Data);
+			A(ESC, nop, OSCEsc);
+			D(nop, OSC);
+		}
+		S(OSCEsc) {
+			A('\\', nop, Data);
+			D(nop, OSC);
+		}
+	}
+}
+
+static bool bright;
+static int defaultBg = 0;
+static int defaultFg = 7;
+
+static void span(const struct Style *prev, const struct Cell *cell) {
+	struct Style style = cell->style;
+	if (!prev || memcmp(prev, &style, sizeof(*prev))) {
+		if (prev) printf("</span>");
+		if (style.bg < 0) style.bg = defaultBg;
+		if (style.fg < 0) style.fg = defaultFg;
+		if (bright && style.attr & Bold) {
+			if (style.fg < 8) style.fg += 8;
+			style.attr ^= Bold;
+		}
+		printf(
+			"<span style=\"%s%s%s\" class=\"bg%u fg%u\">",
+			(style.attr & Bold ? "font-weight:bold;" : ""),
+			(style.attr & Italic ? "font-style:italic;" : ""),
+			(style.attr & Underline ? "text-decoration:underline;" : ""),
+			(style.attr & Reverse ? style.fg : style.bg),
+			(style.attr & Reverse ? style.bg : style.fg)
+		);
+	}
+	switch (cell->ch) {
+		break; case '&': printf("&amp;");
+		break; case '<': printf("&lt;");
+		break; case '>': printf("&gt;");
+		break; default:  printf("%lc", (wint_t)cell->ch);
+	}
+}
+
+static bool mediaCopy;
+static void html(void) {
+	mediaCopy = true;
+	if (mode & Cursor) cell(y, x)->style.attr ^= Reverse;
+	printf(
+		"<pre style=\"width: %uch;\" class=\"bg%u fg%u\">",
+		cols, defaultBg, defaultFg
+	);
+	for (uint y = 0; y < rows; ++y) {
+		for (uint x = 0; x < cols; ++x) {
+			if (!cell(y, x)->ch) continue;
+			span(x ? &cell(y, x - 1)->style : NULL, cell(y, x));
+		}
+		printf("</span>\n");
+	}
+	printf("</pre>\n");
+	if (mode & Cursor) cell(y, x)->style.attr ^= Reverse;
+}
+
+int main(int argc, char *argv[]) {
+	setlocale(LC_CTYPE, "");
+
+	bool debug = false;
+	bool size = false;
+	bool hide = false;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "Bb:df:h:nsw:"))) {
+		switch (opt) {
+			break; case 'B': bright = true;
+			break; case 'b': defaultBg = strtol(optarg, NULL, 0);
+			break; case 'd': debug = true;
+			break; case 'f': defaultFg = strtol(optarg, NULL, 0);
+			break; case 'h': rows = strtoul(optarg, NULL, 0);
+			break; case 'n': hide = true;
+			break; case 's': size = true;
+			break; case 'w': cols = strtoul(optarg, NULL, 0);
+			break; default:  return EX_USAGE;
+		}
+	}
+
+	FILE *file = stdin;
+	if (optind < argc) {
+		file = fopen(argv[optind], "r");
+		if (!file) err(EX_NOINPUT, "%s", argv[optind]);
+	}
+
+	if (size) {
+		struct winsize window;
+		int error = ioctl(STDERR_FILENO, TIOCGWINSZ, &window);
+		if (error) err(EX_IOERR, "ioctl");
+		rows = window.ws_row;
+		cols = window.ws_col;
+	}
+	scroll.bot = rows;
+
+	cells = calloc(rows * cols, sizeof(*cells));
+	if (!cells) err(EX_OSERR, "calloc");
+	erase(cell(0, 0), cell(rows - 1, cols));
+
+	wint_t ch;
+	while (WEOF != (ch = getwc(file))) {
+		uint prev = state;
+		update(ch);
+		if (debug && state != prev && state == Data) html();
+	}
+	if (ferror(file)) err(EX_IOERR, "getwc");
+
+	if (!mediaCopy) {
+		if (hide) mode &= ~Cursor;
+		html();
+	}
+}
diff --git a/bin/sup.sh b/bin/sup.sh
new file mode 100644
index 00000000..b7f28bc7
--- /dev/null
+++ b/bin/sup.sh
@@ -0,0 +1,169 @@
+#!/bin/sh
+set -eu
+
+service=$1
+email=${2:-$(git config fetchemail.imapUser)}
+
+generate() {
+	openssl rand -base64 33
+}
+copy() {
+	printf '%s' "$1" | pbcopy
+}
+
+asciinema() {
+	echo 'Fetching CSRF token...'
+	jar=$(mktemp -t sup)
+	trap 'rm "${jar}"' EXIT
+	csrf=$(
+		curl -Ss -c "${jar}" 'https://asciinema.org/login/new' |
+		sed -n 's/.*name="_csrf_token".*value="\([^"]*\)".*/\1/p'
+	)
+	echo 'Submitting form...'
+	curl -Ss -X POST -b "${jar}" \
+		-F "_csrf_token=${csrf}" -F "login[email]=${email}" \
+		'https://asciinema.org/login' \
+		>/dev/null
+	echo 'Waiting for email...'
+	url=$(
+		git fetch-email -i -M Trash \
+			-F 'hello@asciinema.org' -T "${email}" \
+			-S 'Login to asciinema.org' |
+		grep -m 1 '^https://asciinema\.org/session/new'
+	)
+	open "${url}"
+}
+
+bugzilla() {
+	echo 'Fetching CSRF token...'
+	csrf=$(
+		curl -Ss "${bugzillaBase}/" |
+		sed -n '
+			/name="token"/N
+			s/.*name="token"[[:space:]]*value="\([^"]*\)".*/\1/p
+		' | head -n 1
+	)
+	echo 'Submitting form...'
+	curl -Ss -X POST \
+		-F "loginname=${email}" -F "token=${csrf}" -F 'a=reqpw' \
+		"${bugzillaBase}/token.cgi" \
+		>/dev/null
+	echo 'Waiting for email...'
+	token=$(
+		git fetch-email -i -M Trash \
+			-F "${bugzillaFrom}" -T "${email}" \
+			-S 'Bugzilla Change Password Request' |
+		sed -n 's/.*t=3D\([^&]*\).*/\1/p' |
+		head -n 1
+	)
+	password=$(generate)
+	echo 'Setting password...'
+	curl -Ss -X POST \
+		-F "t=${token}" -F 'a=chgpw' \
+		-F "password=${password}" -F "matchpassword=${password}" \
+		"${bugzillaBase}/token.cgi" \
+		>/dev/null
+	copy "${password}"
+	open "${bugzillaBase}/"
+}
+
+freebsdbugzilla() {
+	bugzillaBase='https://bugs.freebsd.org/bugzilla'
+	bugzillaFrom='bugzilla-noreply@freebsd.org'
+	bugzilla
+}
+
+discogs() {
+	echo 'Submitting form...'
+	curl -Ss -X POST \
+		-F "email=${email}" -F 'Action.EmailResetInstructions=submit' \
+		'https://www.discogs.com/users/forgot_password' \
+		>/dev/null
+	echo 'Waiting for email...'
+	url=$(
+		git fetch-email -i -M Trash \
+			-F 'noreply@discogs.com' -T "${email}" \
+			-S 'Discogs Account Password Reset Instructions' |
+		sed -n 's/^To proceed, follow the instructions here: \(.*\)/\1/p'
+	)
+	echo 'Fetching token...'
+	token=$(curl -ISs --url "${url}" | sed -n 's/.*[?]token=\([^&]*\).*/\1/p')
+	password=$(generate)
+	echo 'Setting password...'
+	curl -Ss -X POST \
+		-F "token=${token}" \
+		-F "password0=${password}" -F "password1=${password}" \
+		-F 'Action.ChangePassword=submit' \
+		'https://www.discogs.com/users/forgot_password' \
+		>/dev/null
+	copy "${password}"
+	open 'https://discogs.com/login'
+}
+
+liberapay() {
+	echo 'Fetching CSRF token...'
+	csrf=$(
+		curl -Ss 'https://liberapay.com/sign-in' |
+		sed -n 's/.*name="csrf_token".*value="\([^"]*\)".*/\1/p'
+	)
+	echo 'Submitting form...'
+	curl -Ss -X POST \
+		-b "csrf_token=${csrf}" -F "csrf_token=${csrf}" \
+		-F "log-in.id=${email}" \
+		'https://liberapay.com/sign-in' \
+		>/dev/null
+	echo 'Waiting for email...'
+	url=$(
+		git fetch-email -i -M Trash \
+			-F 'support@liberapay.com' -T "${email}" \
+			-S 'Log in to Liberapay' |
+		grep -m 1 '^https://liberapay\.com/'
+	)
+	open "${url}"
+}
+
+lobsters() {
+	: ${lobstersBase:=https://lobste.rs}
+	: ${lobstersFrom:=nobody@lobste.rs}
+	echo 'Fetching CSRF token...'
+	csrf=$(
+		curl -Ss "${lobstersBase}/login/forgot_password" |
+		sed -n 's/.*name="authenticity_token" value="\([^"]*\)".*/\1/p'
+	)
+	echo 'Submitting form...'
+	curl -Ss -X POST \
+		-F "authenticity_token=${csrf}" \
+		-F "email=${email}" -F 'commit=submit' \
+		"${lobstersBase}/login/reset_password" \
+		>/dev/null
+	echo 'Waiting for email...'
+	token=$(
+		git fetch-email -i -M Trash \
+			-F "${lobstersFrom}" -T "${email}" \
+			-S 'Reset your password' |
+		sed -n 's|^https://.*[?]token=\(.*\)|\1|p'
+	)
+	echo 'Fetching CSRF token...'
+	csrf=$(
+		curl -Ss "${lobstersBase}/login/set_new_password?token=${token}" |
+		sed -n 's/.*name="authenticity_token" value="\([^"]*\)".*/\1/p'
+	)
+	password=$(generate)
+	echo 'Setting password...'
+	curl -Ss -X POST \
+		-F "authenticity_token=${csrf}" -F "token=${token}" \
+		-F "password=${password}" -F "password_confirmation=${password}" \
+		-F 'commit=submit' \
+		"${lobstersBase}/login/set_new_password" \
+		>/dev/null
+	copy "${password}"
+	open "${lobstersBase}/login"
+}
+
+tildenews() {
+	lobstersBase='https://tilde.news'
+	lobstersFrom='nobody@tilde.news'
+	lobsters
+}
+
+$service
diff --git a/bin/title.c b/bin/title.c
new file mode 100644
index 00000000..82f89d95
--- /dev/null
+++ b/bin/title.c
@@ -0,0 +1,211 @@
+/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <curl/curl.h>
+#include <err.h>
+#include <locale.h>
+#include <regex.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+#include <wchar.h>
+
+static regex_t regex(const char *pattern, int flags) {
+	regex_t regex;
+	int error = regcomp(&regex, pattern, REG_EXTENDED | flags);
+	if (!error) return regex;
+
+	char buf[256];
+	regerror(error, &regex, buf, sizeof(buf));
+	errx(EX_SOFTWARE, "regcomp: %s: %s", buf, pattern);
+}
+
+static const struct Entity {
+	wchar_t ch;
+	const char *name;
+} Entities[] = {
+	{ L'"', "&quot;" },
+	{ L'&', "&amp;" },
+	{ L'<', "&lt;" },
+	{ L'>', "&gt;" },
+	{ L'␤', "&#10;" },
+};
+
+static wchar_t entity(const char *name) {
+	for (size_t i = 0; i < sizeof(Entities) / sizeof(Entities[0]); ++i) {
+		struct Entity entity = Entities[i];
+		if (strncmp(name, entity.name, strlen(entity.name))) continue;
+		return entity.ch;
+	}
+	if (!strncmp(name, "&#x", 3)) return strtoul(&name[3], NULL, 16);
+	if (!strncmp(name, "&#", 2)) return strtoul(&name[2], NULL, 10);
+	return 0;
+}
+
+static const char EntityPattern[] = {
+	"[[:space:]]+|&([[:alpha:]]+|#([[:digit:]]+|x[[:xdigit:]]+));"
+};
+static regex_t EntityRegex;
+
+static void showTitle(const char *title) {
+	regmatch_t match = {0};
+	for (; *title; title += match.rm_eo) {
+		if (regexec(&EntityRegex, title, 1, &match, 0)) break;
+		if (title[match.rm_so] != '&') {
+			printf("%.*s ", (int)match.rm_so, title);
+			continue;
+		}
+		wchar_t ch = entity(&title[match.rm_so]);
+		if (ch) {
+			printf("%.*s%lc", (int)match.rm_so, title, (wint_t)ch);
+		} else {
+			printf("%.*s", (int)match.rm_eo, title);
+		}
+	}
+	printf("%s\n", title);
+}
+
+static CURL *curl;
+static bool title;
+static struct {
+	char buf[64 * 1024];
+	size_t len;
+} body;
+
+// HE COMES
+static const char TitlePattern[] = "<title>([^<]*)</title>";
+static regex_t TitleRegex;
+
+static size_t handleBody(char *buf, size_t size, size_t nitems, void *user) {
+	(void)user;
+	size_t len = size * nitems;
+	size_t cap = sizeof(body.buf) - body.len - 1;
+	size_t new = (len < cap ? len : cap);
+	if (title || !new) return len;
+
+	memcpy(&body.buf[body.len], buf, new);
+	body.len += new;
+	body.buf[body.len] = '\0';
+
+	regmatch_t match[2];
+	if (regexec(&TitleRegex, body.buf, 2, match, 0)) return len;
+	body.buf[match[1].rm_eo] = '\0';
+	showTitle(&body.buf[match[1].rm_so]);
+	title = true;
+
+	return len;
+}
+
+static CURLcode fetchTitle(const char *url) {
+	CURLcode code = curl_easy_setopt(curl, CURLOPT_URL, url);
+	if (code) return code;
+
+	curl_easy_setopt(curl, CURLOPT_NOBODY, 1L);
+	code = curl_easy_perform(curl);
+	if (code) return code;
+
+	char *type;
+	code = curl_easy_getinfo(curl, CURLINFO_CONTENT_TYPE, &type);
+	if (code) return code;
+	if (!type || strncmp(type, "text/html", 9)) return CURLE_OK;
+
+	char *dest;
+	curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &dest);
+	dest = strdup(dest);
+	if (!dest) err(EX_OSERR, "strdup");
+
+	code = curl_easy_setopt(curl, CURLOPT_URL, dest);
+	if (code) return code;
+	free(dest);
+
+	body.len = 0;
+	title = false;
+	curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L);
+	code = curl_easy_perform(curl);
+	return code;
+}
+
+int main(int argc, char *argv[]) {
+	EntityRegex = regex(EntityPattern, 0);
+	TitleRegex = regex(TitlePattern, REG_ICASE);
+
+	setlocale(LC_CTYPE, "");
+	setlinebuf(stdout);
+
+	CURLcode code = curl_global_init(CURL_GLOBAL_ALL);
+	if (code) errx(EX_OSERR, "curl_global_init: %s", curl_easy_strerror(code));
+
+	curl = curl_easy_init();
+	if (!curl) errx(EX_SOFTWARE, "curl_easy_init");
+
+	static char error[CURL_ERROR_SIZE];
+	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, error);
+
+	curl_easy_setopt(curl, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
+	curl_easy_setopt(
+		curl, CURLOPT_USERAGENT,
+		"curl/7.54.0 facebookexternalhit/1.1 Twitterbot/1.0"
+	);
+	curl_easy_setopt(curl, CURLOPT_ACCEPT_ENCODING, "");
+	curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
+	curl_easy_setopt(curl, CURLOPT_MAXREDIRS, 3L);
+	curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L);
+
+	curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, handleBody);
+
+	bool exclude = false;
+	regex_t excludeRegex;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "x:v"))) {
+		switch (opt) {
+			break; case 'x': {
+				exclude = true;
+				excludeRegex = regex(optarg, REG_NOSUB);
+			}
+			break; case 'v': curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+			break; default:  return EX_USAGE;
+		}
+	}
+
+	if (optind < argc) {
+		code = fetchTitle(argv[optind]);
+		if (!code) return EX_OK;
+		errx(EX_DATAERR, "curl_easy_perform: %s", error);
+	}
+
+	char *buf = NULL;
+	size_t cap = 0;
+
+	regex_t urlRegex = regex("https?://([^[:space:]>\"()]|[(][^)]*[)])+", 0);
+	while (0 < getline(&buf, &cap, stdin)) {
+		regmatch_t match = {0};
+		for (char *ptr = buf; *ptr; ptr += match.rm_eo) {
+			if (regexec(&urlRegex, ptr, 1, &match, 0)) break;
+			ptr[match.rm_eo] = '\0';
+			const char *url = &ptr[match.rm_so];
+			if (!exclude || regexec(&excludeRegex, url, 0, NULL, 0)) {
+				code = fetchTitle(url);
+				if (code) warnx("curl_easy_perform: %s", error);
+			}
+			ptr[match.rm_eo] = ' ';
+		}
+	}
+	if (ferror(stdin)) err(EX_IOERR, "getline");
+}
diff --git a/bin/typer.c b/bin/typer.c
new file mode 100644
index 00000000..76eab784
--- /dev/null
+++ b/bin/typer.c
@@ -0,0 +1,197 @@
+/* Copyright (C) 2021  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Additional permission under GNU GPL version 3 section 7:
+ *
+ * If you modify this Program, or any covered work, by linking or
+ * combining it with LibreSSL (or a modified version of that library),
+ * containing parts covered by the terms of the OpenSSL License and the
+ * original SSLeay license, the licensors of this Program grant you
+ * additional permission to convey the resulting work. Corresponding
+ * Source for a non-source form of such a combination shall include the
+ * source code for the parts of LibreSSL used as well as that of the
+ * covered work.
+ */
+
+#include <err.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <sysexits.h>
+#include <tls.h>
+#include <unistd.h>
+
+static bool verbose;
+static struct tls *client;
+static const char *chan;
+
+static void clientWrite(const char *ptr, size_t len) {
+	if (verbose) printf("%.*s", (int)len, ptr);
+	while (len) {
+		ssize_t ret = tls_write(client, ptr, len);
+		if (ret == TLS_WANT_POLLIN || ret == TLS_WANT_POLLOUT) continue;
+		if (ret < 0) errx(EX_IOERR, "tls_write: %s", tls_error(client));
+		ptr += ret;
+		len -= ret;
+	}
+}
+
+static void format(const char *format, ...) {
+	char buf[1024];
+	va_list ap;
+	va_start(ap, format);
+	int len = vsnprintf(buf, sizeof(buf), format, ap);
+	va_end(ap);
+	if ((size_t)len > sizeof(buf) - 1) errx(EX_DATAERR, "message too large");
+	clientWrite(buf, len);
+}
+
+static bool joined;
+static bool reverse;
+static bool copy;
+
+static void handle(char *line) {
+	char *tags = NULL;
+	char *origin = NULL;
+	if (line && line[0] == '@') tags = 1 + strsep(&line, " ");
+	if (line && line[0] == ':') origin = 1 + strsep(&line, " ");
+	char *cmd = strsep(&line, " ");
+	if (!cmd) return;
+	if (!strcmp(cmd, "CAP")) {
+		char *param = strsep(&cmd, " ");
+		if (!param) errx(EX_PROTOCOL, "CAP missing parameter");
+		if (!strcmp(param, "NAK")) {
+			errx(EX_CONFIG, "server does not support message-tags");
+		}
+		format("CAP END\r\n");
+	} else if (!strcmp(cmd, "001")) {
+		format("JOIN %s\r\n", chan);
+		joined = true;
+	} else if (!strcmp(cmd, "PING")) {
+		format("PONG %s\r\n", line);
+	} else if (copy && !strcmp(cmd, "TAGMSG") && tags) {
+		if (strstr(tags, "typing=")) {
+			format("@%s TAGMSG %s\r\n", tags, chan);
+		}
+	} else if (reverse && !strcmp(cmd, "TAGMSG") && tags && origin) {
+		char *nick = strsep(&origin, "!");
+		if (strstr(tags, "typing=active")) {
+			format("PRIVMSG %s :\u2328\uFE0F %s is typing!\r\n", chan, nick);
+		} else if (strstr(tags, "typing=paused")) {
+			format("PRIVMSG %s :\U0001F914 %s is thinking!\r\n", chan, nick);
+		} else if (strstr(tags, "typing=done")) {
+			format("PRIVMSG %s :\u270B %s stopped typing!\r\n", chan, nick);
+		}
+	}
+}
+
+static void timer(int sig) {
+	(void)sig;
+	if (!joined) return;
+	const char *status = (arc4random_uniform(4) ? "active" : "done");
+	format(
+		"@+typing=%s;+draft/typing=%s TAGMSG %s\r\n",
+		status, status, chan
+	);
+}
+
+int main(int argc, char *argv[]) {
+	const char *host = NULL;
+	const char *port = "6697";
+	const char *cert = NULL;
+	const char *nick = "typer";
+	const char *user = "typer";
+	bool passive = false;
+
+	for (int opt; 0 < (opt = getopt(argc, argv, "CPRc:n:p:u:v"));) {
+		switch (opt) {
+			break; case 'C': copy = true;
+			break; case 'P': passive = true;
+			break; case 'R': reverse = true;
+			break; case 'c': cert = optarg;
+			break; case 'n': nick = optarg;
+			break; case 'p': port = optarg;
+			break; case 'u': user = optarg;
+			break; case 'v': verbose = true;
+			break; default:  return EX_USAGE;
+		}
+	}
+	if (argc - optind < 2) errx(EX_USAGE, "host and chan required");
+	host = argv[optind];
+	chan = argv[optind + 1];
+
+	client = tls_client();
+	if (!client) errx(EX_SOFTWARE, "tls_client");
+
+	struct tls_config *config = tls_config_new();
+	if (!config) errx(EX_SOFTWARE, "tls_config_new");
+
+	if (cert) {
+		int error = tls_config_set_keypair_file(config, cert, cert);
+		if (error) errx(EX_CONFIG, "%s: %s", cert, tls_config_error(config));
+	}
+
+	int error = tls_configure(client, config);
+	if (error) errx(EX_SOFTWARE, "tls_configure: %s", tls_error(client));
+	tls_config_free(config);
+
+	error = tls_connect(client, host, port);
+	if (error) errx(EX_UNAVAILABLE, "tls_connect: %s", tls_error(client));
+
+	format(
+		"CAP REQ :message-tags%s\r\n"
+		"NICK %s\r\n"
+		"USER %s 0 * :typer\r\n",
+		(passive ? " causal.agency/passive" : ""),
+		nick, user
+	);
+
+	if (!copy && !reverse) {
+		signal(SIGALRM, timer);
+		struct itimerval itimer = {
+			.it_interval.tv_sec = 5,
+			.it_value.tv_sec = 5
+		};
+		error = setitimer(ITIMER_REAL, &itimer, NULL);
+		if (error) err(EX_OSERR, "setitimer");
+	}
+
+	size_t len = 0;
+	char buf[4096];
+	for (;;) {
+		ssize_t read = tls_read(client, &buf[len], sizeof(buf) - len);
+		if (read == TLS_WANT_POLLIN || read == TLS_WANT_POLLOUT) continue;
+		if (read < 0) errx(EX_IOERR, "tls_read: %s", tls_error(client));
+		if (!read) errx(EX_UNAVAILABLE, "server disconnected");
+		len += read;
+
+		char *crlf;
+		char *line = buf;
+		for (;;) {
+			crlf = memmem(line, &buf[len] - line, "\r\n", 2);
+			if (!crlf) break;
+			crlf[0] = '\0';
+			if (verbose) printf("%s\n", line);
+			handle(line);
+			line = &crlf[2];
+		}
+		len -= line - buf;
+		memmove(buf, line, len);
+	}
+}
diff --git a/bin/up.sh b/bin/up.sh
new file mode 100644
index 00000000..f55213d4
--- /dev/null
+++ b/bin/up.sh
@@ -0,0 +1,80 @@
+#!/bin/sh
+set -eu
+
+readonly Host='temp.causal.agency'
+
+upload() {
+	local src ext ts rand url
+	src=$1
+	ext=${src##*.}
+	ts=$(date +'%s')
+	rand=$(openssl rand -hex 4)
+	url=$(printf '%s/%x%s.%s' "$Host" "$ts" "$rand" "$ext")
+	scp -q "$src" "${Host}:/usr/local/www/${url}"
+	echo "https://${url}"
+}
+
+temp() {
+	temp=$(mktemp -d)
+	trap "rm -r '$temp'" EXIT
+}
+
+uploadText() {
+	temp
+	cat > "${temp}/input.txt"
+	upload "${temp}/input.txt"
+}
+
+uploadCommand() {
+	temp
+	echo "$ $*" > "${temp}/exec.txt"
+	"$@" >> "${temp}/exec.txt" 2>&1 || true
+	upload "${temp}/exec.txt"
+}
+
+uploadHilex() {
+	temp
+	hilex -f html -o document,tab=4 "$@" > "${temp}/hilex.html"
+	upload "${temp}/hilex.html"
+}
+
+uploadScreen() {
+	temp
+	if type screencapture >/dev/null; then
+		screencapture -i "$@" "${temp}/capture.png"
+	else
+		scrot -s "$@" "${temp}/capture.png"
+	fi
+	pngo "${temp}/capture.png" || true
+	upload "${temp}/capture.png"
+}
+
+uploadTerminal() {
+	temp
+	cat > "${temp}/term.html" <<-EOF
+	<!DOCTYPE html>
+	<title>${1}</title>
+	<style>
+	$(scheme -s)
+	</style>
+	EOF
+	ptee "$@" | shotty -Bs >> "${temp}/term.html"
+	upload "${temp}/term.html"
+}
+
+while getopts 'chst' opt; do
+	case "$opt" in
+		(c) fn=uploadCommand;;
+		(h) fn=uploadHilex;;
+		(s) fn=uploadScreen;;
+		(t) fn=uploadTerminal;;
+		(?) exit 1;;
+	esac
+done
+shift $((OPTIND - 1))
+[ $# -eq 0 ] && : ${fn:=uploadText}
+: ${fn:=upload}
+
+url=$($fn "$@")
+printf '%s' "$url" | pbcopy || true
+echo "$url"
diff --git a/bin/when.y b/bin/when.y
new file mode 100644
index 00000000..d647d193
--- /dev/null
+++ b/bin/when.y
@@ -0,0 +1,255 @@
+/* Copyright (C) 2019  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+%{
+
+#include <ctype.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <sysexits.h>
+#include <time.h>
+
+static void yyerror(const char *str);
+static int yylex(void);
+
+#define YYSTYPE struct tm
+
+static const char *Days[7] = {
+	"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
+};
+
+static const char *Months[12] = {
+	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
+	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
+};
+
+static const struct tm Week = { .tm_mday = 7 };
+
+static struct tm normalize(struct tm date) {
+	time_t time = timegm(&date);
+	struct tm *norm = gmtime(&time);
+	if (!norm) err(EX_OSERR, "gmtime");
+	return *norm;
+}
+
+static struct tm today(void) {
+	time_t now = time(NULL);
+	struct tm *local = localtime(&now);
+	if (!local) err(EX_OSERR, "localtime");
+	struct tm date = {
+		.tm_year = local->tm_year,
+		.tm_mon = local->tm_mon,
+		.tm_mday = local->tm_mday,
+	};
+	return normalize(date);
+}
+
+static struct tm monthDay(int month, int day) {
+	struct tm date = today();
+	date.tm_mon = month;
+	date.tm_mday = day;
+	return normalize(date);
+}
+
+static struct tm monthDayYear(int month, int day, int year) {
+	struct tm date = today();
+	date.tm_mon = month;
+	date.tm_mday = day;
+	date.tm_year = year - 1900;
+	return normalize(date);
+}
+
+static struct tm weekDay(int day) {
+	struct tm date = today();
+	date.tm_mday += day - date.tm_wday;
+	return normalize(date);
+}
+
+static struct tm scalarAdd(struct tm a, struct tm b) {
+	a.tm_mday += b.tm_mday;
+	a.tm_mon += b.tm_mon;
+	a.tm_year += b.tm_year;
+	return a;
+}
+
+static struct tm scalarSub(struct tm a, struct tm b) {
+	a.tm_mday -= b.tm_mday;
+	a.tm_mon -= b.tm_mon;
+	a.tm_year -= b.tm_year;
+	return a;
+}
+
+static struct tm dateAdd(struct tm date, struct tm scalar) {
+	return normalize(scalarAdd(date, scalar));
+}
+
+static struct tm dateSub(struct tm date, struct tm scalar) {
+	return normalize(scalarSub(date, scalar));
+}
+
+static struct tm dateDiff(struct tm a, struct tm b) {
+	struct tm diff = {
+		.tm_year = a.tm_year - b.tm_year,
+		.tm_mon = a.tm_mon - b.tm_mon,
+		.tm_mday = a.tm_mday - b.tm_mday,
+	};
+	if (a.tm_mon < b.tm_mon) {
+		diff.tm_year--;
+		diff.tm_mon += 12;
+	}
+	if (a.tm_mday < b.tm_mday) {
+		diff.tm_mon--;
+		diff.tm_mday = 0;
+		while (dateAdd(b, diff).tm_mday != a.tm_mday) diff.tm_mday++;
+	}
+	time_t atime = timegm(&a), btime = timegm(&b);
+	diff.tm_yday = (atime - btime) / 24 / 60 / 60;
+	return diff;
+}
+
+static void printDate(struct tm date) {
+	printf(
+		"%s %s %d %d\n",
+		Days[date.tm_wday], Months[date.tm_mon],
+		date.tm_mday, 1900 + date.tm_year
+	);
+}
+
+static void printScalar(struct tm scalar) {
+	if (scalar.tm_year) printf("%dy ", scalar.tm_year);
+	if (scalar.tm_mon) printf("%dm ", scalar.tm_mon);
+	if (scalar.tm_mday % 7) {
+		printf("%dd ", scalar.tm_mday);
+	} else if (scalar.tm_mday) {
+		printf("%dw ", scalar.tm_mday / 7);
+	}
+	if (scalar.tm_yday && scalar.tm_mon) {
+		if (scalar.tm_yday % 7 == 0) {
+			printf("(%dw) ", scalar.tm_yday / 7);
+		}
+		printf("(%dd) ", scalar.tm_yday);
+	}
+	printf("\n");
+}
+
+%}
+
+%token Number Month Day
+%left '+' '-'
+%right '<' '>'
+
+%%
+
+expr:
+	date { printDate($1); }
+	| scalar { printScalar($1); }
+	;
+
+date:
+	dateLit
+	| '(' date ')' { $$ = $2; }
+	| '<' date { $$ = dateSub($2, Week); }
+	| '>' date { $$ = dateAdd($2, Week); }
+	| date '+' scalar { $$ = dateAdd($1, $3); }
+	| date '-' scalar { $$ = dateSub($1, $3); }
+	;
+
+scalar:
+	scalarLit
+	| '(' scalar ')' { $$ = $2; }
+	| scalar '+' scalar { $$ = scalarAdd($1, $3); }
+	| scalar '-' scalar { $$ = scalarSub($1, $3); }
+	| date '-' date { $$ = dateDiff($1, $3); }
+	;
+
+dateLit:
+	{ $$ = today(); }
+	| '.' { $$ = today(); }
+	| Month Number { $$ = monthDay($1.tm_mon, $2.tm_sec); }
+	| Month Number Number { $$ = monthDayYear($1.tm_mon, $2.tm_sec, $3.tm_sec); }
+	| Day { $$ = weekDay($1.tm_wday); }
+	;
+
+scalarLit:
+	Number 'd' { $$ = (struct tm) { .tm_mday = $1.tm_sec }; }
+	| Number 'w' { $$ = (struct tm) { .tm_mday = 7 * $1.tm_sec }; }
+	| Number 'm' { $$ = (struct tm) { .tm_mon = $1.tm_sec }; }
+	| Number 'y' { $$ = (struct tm) { .tm_year = $1.tm_sec }; }
+	;
+
+%%
+
+static void yyerror(const char *str) {
+	warnx("%s", str);
+}
+
+static const char *input;
+
+static int yylex(void) {
+	while (isspace(*input)) input++;
+	if (!*input) return EOF;
+
+	if (isdigit(*input)) {
+		char *rest;
+		yylval.tm_sec = strtol(input, &rest, 10);
+		input = rest;
+		return Number;
+	}
+
+	for (int i = 0; i < 7; ++i) {
+		if (strncasecmp(input, Days[i], 3)) continue;
+		while (isalpha(*input)) input++;
+		yylval.tm_wday = i;
+		return Day;
+	}
+
+	for (int i = 0; i < 12; ++i) {
+		if (strncasecmp(input, Months[i], 3)) continue;
+		while (isalpha(*input)) input++;
+		yylval.tm_mon = i;
+		return Month;
+	}
+
+	return *input++;
+}
+
+int main(int argc, char *argv[]) {
+	if (argc > 1) {
+		input = argv[1];
+		return yyparse();
+	}
+
+	struct tm date = today();
+	printDate(date);
+	printf("\n");
+
+	char *line = NULL;
+	size_t cap = 0;
+	while (0 < getline(&line, &cap, stdin)) {
+		if (line[0] == '\n') continue;
+
+		if (today().tm_mday != date.tm_mday) {
+			warnx("the date has changed");
+			date = today();
+		}
+
+		input = line;
+		yyparse();
+		printf("\n");
+	}
+}
diff --git a/bin/xx.c b/bin/xx.c
new file mode 100644
index 00000000..6d04f2f5
--- /dev/null
+++ b/bin/xx.c
@@ -0,0 +1,142 @@
+/* Copyright (C) 2017  C. McEnroe <june@causal.agency>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ctype.h>
+#include <err.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+typedef unsigned char byte;
+
+static bool zero(const byte *ptr, size_t size) {
+	for (size_t i = 0; i < size; ++i) {
+		if (ptr[i]) return false;
+	}
+	return true;
+}
+
+static struct {
+	size_t cols;
+	size_t group;
+	size_t blank;
+	bool ascii;
+	bool offset;
+	bool skip;
+} options = { 16, 8, 0, true, true, false };
+
+static void dump(FILE *file) {
+	bool skip = false;
+
+	byte buf[options.cols];
+	size_t offset = 0;
+	for (
+		size_t size;
+		(size = fread(buf, 1, sizeof(buf), file));
+		offset += size
+	) {
+		if (options.skip) {
+			if (zero(buf, size)) {
+				if (!skip) printf("*\n");
+				skip = true;
+				continue;
+			} else {
+				skip = false;
+			}
+		}
+
+		if (options.blank) {
+			if (offset && offset % options.blank == 0) {
+				printf("\n");
+			}
+		}
+
+		if (options.offset) {
+			printf("%08zX:  ", offset);
+		}
+
+		for (size_t i = 0; i < sizeof(buf); ++i) {
+			if (options.group) {
+				if (i && !(i % options.group)) {
+					printf(" ");
+				}
+			}
+			if (i < size) {
+				printf("%02hhX ", buf[i]);
+			} else {
+				printf("   ");
+			}
+		}
+
+		if (options.ascii) {
+			printf(" ");
+			for (size_t i = 0; i < size; ++i) {
+				if (options.group) {
+					if (i && !(i % options.group)) {
+						printf(" ");
+					}
+				}
+				printf("%c", isprint(buf[i]) ? buf[i] : '.');
+			}
+		}
+
+		printf("\n");
+	}
+}
+
+static void undump(FILE *file) {
+	byte c;
+	int match;
+	while (0 < (match = fscanf(file, " %hhx", &c))) {
+		printf("%c", c);
+	}
+	if (!match) errx(EX_DATAERR, "invalid input");
+}
+
+int main(int argc, char *argv[]) {
+	bool reverse = false;
+	const char *path = NULL;
+
+	int opt;
+	while (0 < (opt = getopt(argc, argv, "ac:g:p:rsz"))) {
+		switch (opt) {
+			break; case 'a': options.ascii ^= true;
+			break; case 'c': options.cols = strtoul(optarg, NULL, 0);
+			break; case 'g': options.group = strtoul(optarg, NULL, 0);
+			break; case 'p': options.blank = strtoul(optarg, NULL, 0);
+			break; case 'r': reverse = true;
+			break; case 's': options.offset ^= true;
+			break; case 'z': options.skip ^= true;
+			break; default: return EX_USAGE;
+		}
+	}
+	if (argc > optind) path = argv[optind];
+	if (!options.cols) return EX_USAGE;
+
+	FILE *file = path ? fopen(path, "r") : stdin;
+	if (!file) err(EX_NOINPUT, "%s", path);
+
+	if (reverse) {
+		undump(file);
+	} else {
+		dump(file);
+	}
+	if (ferror(file)) err(EX_IOERR, "%s", path);
+
+	return EX_OK;
+}