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-rw-r--r--bin/.gitignore1
-rw-r--r--bin/Makefile14
-rw-r--r--bin/README.74
-rw-r--r--bin/bibsort.pl66
-rw-r--r--bin/html.sh2
-rw-r--r--bin/man1/bibsort.137
6 files changed, 120 insertions, 4 deletions
diff --git a/bin/.gitignore b/bin/.gitignore
index f7c65388..df322fd4 100644
--- a/bin/.gitignore
+++ b/bin/.gitignore
@@ -1,6 +1,7 @@
 *.html
 *.o
 beef
+bibsort
 bit
 bri
 c
diff --git a/bin/Makefile b/bin/Makefile
index 3ba877c1..5691b0fc 100644
--- a/bin/Makefile
+++ b/bin/Makefile
@@ -20,6 +20,7 @@ LDLIBS.title = -lcurl
 -include config.mk
 
 BINS += beef
+BINS += bibsort
 BINS += bit
 BINS += c
 BINS += dtch
@@ -65,12 +66,18 @@ tls: meta ${BINS_TLS}
 
 meta: .gitignore tags
 
+.SUFFIXES: .pl
+
 .c:
 	${CC} ${CFLAGS} ${LDFLAGS} $< ${LDLIBS.$@} -o $@
 
 .o:
 	${CC} ${LDFLAGS} $< ${LDLIBS.$@} -o $@
 
+.pl:
+	cp -f $< $@
+	chmod a+x $@
+
 hi: hi.c
 	${CC} ${CFLAGS} ${LDFLAGS} hi.c ${LDLIBS.$@} -o $@
 	./hi -c
@@ -127,11 +134,14 @@ ${HTMLS}: html.sh scheme hi ttpre
 .h.html:
 	sh html.sh $< man3/${<:.h=.3} > $@
 
+.y.html:
+	sh html.sh $< man1/${<:.y=.1} > $@
+
 .sh.html:
 	sh html.sh $< man1/${<:.sh=.1} > $@
 
-.y.html:
-	sh html.sh $< man1/${<:.y=.1} > $@
+.pl.html:
+	sh html.sh $< man1/${<:.pl=.1} > $@
 
 index.html: Makefile README.7
 	sh html.sh Makefile README.7 \
diff --git a/bin/README.7 b/bin/README.7
index 4ce7fc74..40dcdd0b 100644
--- a/bin/README.7
+++ b/bin/README.7
@@ -1,4 +1,4 @@
-.Dd October 29, 2020
+.Dd December 15, 2020
 .Dt BIN 7
 .Os "Causal Agency"
 .
@@ -18,6 +18,8 @@ Some tools target Linux.
 .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
diff --git a/bin/bibsort.pl b/bin/bibsort.pl
new file mode 100644
index 00000000..5f0ad7ba
--- /dev/null
+++ b/bin/bibsort.pl
@@ -0,0 +1,66 @@
+#!/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/, $a, 2;
+	my ($bf, $bl) = split /\s/, $b, 2;
+	$al cmp $bl || $af cmp $bf;
+}
+
+foreach $ref (@refs) {
+	@{$ref->{A}} = sort byLast @{$ref->{A}};
+	@{$ref->{Q}} = sort @{$ref->{Q}} if $ref->{Q};
+	next unless $ref->{N};
+	if ($ref->{N}[0] =~ /RFC/) {
+		$ref->{R} = $ref->{N};
+		delete $ref->{N};
+	}
+}
+
+sub byAuthor {
+	local ($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/html.sh b/bin/html.sh
index 4a6b52f8..e96a7210 100644
--- a/bin/html.sh
+++ b/bin/html.sh
@@ -38,4 +38,4 @@ pre.hi {
 EOF
 
 [ -f "$man" ] && man -P cat "${PWD}/${man}" | ./ttpre
-./hi -f html -o anchor "$src"
+./hi -t -f html -o anchor "$src"
diff --git a/bin/man1/bibsort.1 b/bin/man1/bibsort.1
new file mode 100644
index 00000000..9d036920
--- /dev/null
+++ b/bin/man1/bibsort.1
@@ -0,0 +1,37 @@
+.Dd December 15, 2020
+.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.
+.
+.Sh EXAMPLES
+.Dl :%!bibsort