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.Dd September 8, 2018
.Dt CHATTE 1
.Os "Causal Agency"
.
.Sh NAME
.Nm chatte
.Nd IRC for catgirls
.
.Sh SYNOPSIS
.Nm
.Op Fl v
.Op Fl W Ar pass
.Op Fl h Ar host
.Op Fl j Ar chan
.Op Fl l Ar path
.Op Fl n Ar nick
.Op Fl p Ar port
.Op Fl u Ar user
.Op Fl w Ar pass
.
.Sh DESCRIPTION
.Nm
is a curses IRC client
which only supports TLS.
.
.Pp
The arguments are as follows:
.
.Bl -tag -width Ds
.It Fl W Ar pass
Send
.Ql WEBIRC
command with
.Ar pass .
See
.Sx ENVIRONMENT
for details.
.
.It Fl h Ar host
Connect to
.Ar host .
.
.It Fl j Ar chan
Join
.Ar chan
after connecting.
.Ar chan
may be a comma-separated list.
.
.It Fl l Ar path
Log messages to subdirectories by target
and files by date under
.Ar path .
.
.It Fl n Ar nick
Set nickname to
.Ar nick .
.
.It Fl p Ar port
Connect to
.Ar port .
The default port is 6697.
.
.It Fl u Ar user
Set username to
.Ar user .
The default username is
the same as the nickname.
.
.It Fl v
Show raw IRC protocol in the
.Ql (irc)
view.
.
.It Fl w Ar pass
Log in with
.Ar pass .
.El
.
.Pp
If
.Fl h
or
.Fl n
are not provided,
they will be prompted for.
.
.Sh COMMANDS
Commands may be entered
as their shortest unique prefix.
A slash followed immediately by a number
is equivalent to
.Ic /view .
.
.Bl -tag
.It Ic /close
Close the current view.
All views after the current one
are renumbered.
.
.It Ic /help
Equivalent to
.Ic /man .
.
.It Ic /join Ar chan
Join a channel.
.
.It Ic /man
View this manual.
.
.It Ic /me Ar action
Send a CTCP
.Ql ACTION
to the current target.
.
.It Ic /names
List users in the current channel.
Equivalent to
.Ic /who .
.
.It Ic /nick Ar nick
Change nicknames.
.
.It Ic /open Op Ar range
Open
.Ar range
most recent URLs
appearing in the current view
with
.Xr open 1 .
.Ar range
may be a hypen- or comma-separated range
from the most recent URL,
starting at 1.
The default
.Ar range
is 1.
.
.It Ic /open Ar substring
Open the most recent URL
appearing in the current view
matching
.Ar substring
with
.Xr open 1 .
.
.It Ic /part
Leave the current channel.
.
.It Ic /query Ar nick
Open a private message view with
.Ar nick .
.
.It Ic /quit Op Ar message
Quit IRC.
The default
.Ar message
is
.Dq Goodbye .
.
.It Ic /topic Op Ar topic
Show the topic of the current channel
or set it to
.Ar topic .
.
.It Ic /url
Hide the UI and
list the most recent URLS
which appeared in the current view.
Press
.Aq Enter
to resume the UI.
.
.It Ic /view Ar num
Switch to view number
.Ar num .
.
.It Ic /view Ar name
Switch to view for
.Ar name .
.
.It Ic /who
List users in the current channel.
.El
.
.Pp
Additionally,
messages entered in the
.Ql (irc)
view
will be sent as raw IRC commands.
.
.Sh KEY BINDINGS
.Nm
provides Emacs-like
line editing keys,
as well as keys for entering
IRC formatting codes.
.
.Ss View Keys
.Bl -tag
.It Aq C-l
Redraw the UI.
.
.It Ao M-0 Ac ... Ao M-9 Ac
Switch to view by number.
See
.Ic /view .
.
.It Aq S-Left
Scroll view up by one line.
.
.It Aq S-Right
Scroll view down by one line.
.
.It Aq PageUp
Scroll view up by half a page.
.
.It Aq PageDown
Scroll view down by half a page.
.El
.
.Ss Line Editing
.Bl -tag
.It Ao C-b Ac Ao Left Ac
Move cursor left.
.
.It Ao C-f Ac Ao Right Ac
Move cursor right.
.
.It Ao C-a Ac Ao Home Ac
Move cursor to beginning of line.
.
.It Ao C-e Ac Ao End Ac
Move cursor to end of line.
.
.It Aq M-b
Move cursor to beginning of word.
.
.It Aq M-f
Move cursor to end of word.
.
.It Aq Backspace
Delete character before cursor.
.
.It Ao C-d Ac Ao Delete Ac
Delete character under cursor.
.
.It Ao C-w Ac Ao M-Backspace Ac
Delete word before cursor.
.
.It Aq M-d
Delete word after cursor.
.
.It Aq C-k
Delete line after cursor.
.
.It Aq Tab
Cycle through completions
for commands, nicks and channels.
.El
.
.Ss IRC Formatting
.Bl -tag
.It Aq C-n
Reset formatting.
.
.It Aq C-o
Toggle bold.
Note: this may need to be typed as
.Aq C-v C-o .
.
.It Aq C-t
Toggle italic.
.
.It Aq C-u
Toggle underline.
.
.It Aq C-v
Toggle reverse video.
Note: this must usually be typed as
.Aq C-v C-v .
.
.It Aq C-r
Set or reset color.
.El
.
.Pp
To reset color,
follow
.Aq C-r
by a non-digit.
To set the foreground color,
follow
.Aq C-r
by one or two digits.
To set the foreground and background colors,
follow
.Aq C-r
by one or two digits,
a comma,
and one or two digits.
.
.Pp
The colors are as follows:
.Bl -tag -width Ds -compact
.It 0
white
.It 1
black
.It 2
blue
.It 3
green
.It 4
red
.It 5
brown (dark red)
.It 6
magenta
.It 7
orange (dark yellow)
.It 8
yellow
.It 9
light green
.It 10
cyan
.It 11
light cyan
.It 12
light blue
.It 13
pink (light magenta)
.It 14
gray
.It 15
light gray
.El
.
.Sh ENVIRONMENT
.Bl -tag
.It Ev SSH_CLIENT
If
.Fl W
is passed and
.Ev SSH_CLIENT
is set,
the
.Ql WEBIRC
command is used
to set the hostname
to the first word of
.Ev SSH_CLIENT ,
usually the client IP address.
.El
.
.Sh EXAMPLES
.Dl chatte -h ascii.town -j '&chatte'
.
.Sh STANDARDS
.Rs
.%A C. Kalt
.%T Internet Relay Chat: Client Protocol
.%I IETF
.%N RFC 2812
.%D April 2000
.%U https://tools.ietf.org/html/rfc2812
.Re
.
.Sh CAVEATS
.Nm
does not support unencrypted connections.
eaping when necessary after each built-in command and function. Reported-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-04-19redir: Fix typo in noclobber codeHerbert Xu The noclobber code has a typo in it that causes it to fail. This patch fixes it. Reported-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-04-19expand: Fix glibc glob(3) supportHerbert Xu It's been a while since we disabled glob(3) support by default. It appears to be working now, however, we have to change our code to detect the no-match case correctly. In particular, we need to test for GLOB_NOMAGIC | GLOB_NOCHECK instead of GLOB_MAGCHAR. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-04-02expand: Fix buffer overflow in expandmetaHerbert Xu The native version of expandmeta allocates a buffer that may be overrun for two reasons. First of all the size is 1 byte too small but this is normally hidden because the minimum size is rounded up to 2048 bytes. Secondly, if the directory level is deep enough, any buffer can be overrun. This patch fixes both problems by calling realloc when necessary. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-04-02builtin: Move echo space/nl handling into print_escape_strHerbert Xu Currently echocmd uses print_escape_str to do everything apart from printing the spaces/newlines separating its arguments. This patch moves the actual printing into print_escape_str as well using the format parameter. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-04-02builtin: Fix echo performance regressionHerbert Xu The commit d6c0e1e2ffbf7913ab69d51cc794d48d41c8fcb1 ("[BUILTIN] Handle embedded NULs correctly in printf") caused a performance regression in the echo built-in because every echo call now goes through the printf %b slow path where the string is always printed twice to ensure the space padding is correct in the presence of NUL characters. In fact this regression applies to printf %b as well. This is easily fixed by making printf %b take the fast path when no precision/field width modifiers are present. This patch also changes the second strchurnul call to strspn which generates slightly better code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-04-02expand: Fix ghost fields with unquoted $@/$*Herbert Xu Harald van Dijk <harald@gigawatt.nl> wrote: > On 22/03/2018 22:38, Martijn Dekker wrote: >> Op 22-03-18 om 20:28 schreef Harald van Dijk: >>> On 22/03/2018 03:40, Martijn Dekker wrote: >>>> This patch fixes the bug that, given no positional parameters, unquoted >>>> $@ and $* incorrectly generate one empty field (they should generate no >>>> fields). Apparently that was a side effect of the above. >>> >>> This seems weird though. If you want to remove the recording of empty >>> regions because they are pointless, then how does removing them fix a >>> bug? Doesn't this show that empty regions do have an effect? Perhaps >>> they're not supposed to have any effect, perhaps it's a specific >>> combination of empty regions and something else that triggers some bug, >>> and perhaps that combination can no longer occur with your patch. >> >> The latter is my guess, but I haven't had time to investigate it. > > Looking into it again: > > When IFS is set to an empty string, sepc is set to '\0' in varvalue(). > This then causes *quotedp to be set to true, meaning evalvar()'s quoted > variable is turned on. quoted is then passed to recordregion() as the > nulonly parameter. > > ifsp->nulonly has a bigger effect than merely selecting whether to use > $IFS or whether to only split on null bytes: in ifsbreakup(), nulonly > also causes string termination to be suppressed. That's correct: that > special treatment is required to preserve empty fields in "$@" > expansion. But it should *only* be used when $@ is quoted: ifsbreakup() > takes nulonly from the last IFS region, even if it's empty, so having an > additional zero-length region with nulonly enabled causes confusion. > > Passing quoted by value to varvalue() and not attempting to modify it > should therefore, and in my quick testing does, also work to fix the > original $@ bug. You're right. The proper fix to this is to ensure that nulonly is not set in varvalue for $*. It should only be set for $@ when it's inside double quotes. In fact there is another bug while we're playing with $@/$*. When IFS is set to a non-whitespace character such as :, $* outside quotes won't remove empty fields as it should. This patch fixes both problems. Reported-by: Martijn Dekker <martijn@inlv.org> Suggested-by: Harald van Dijk <harald@gigawatt.nl> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-04-02parser: Allow newlines within parameter substitutionHerbert Xu On Fri, Mar 16, 2018 at 11:27:22AM +0800, Herbert Xu wrote: > On Thu, Mar 15, 2018 at 10:49:15PM +0100, Harald van Dijk wrote: > > > > Okay, it can be trivially modified to something that does work in other > > shells (even if it were actually executed), but gets rejected at parse time > > by dash: > > > > if false; then > > : ${$+ > > } > > fi > > That's just a bug in dash's parser with ${} in general, because > it bombs out without the if clause too: > > : ${$+ > } This patch fixes the parsing of newlines with parameter substitution. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-04-02expand: Fix bugs with words connected to the right of $@Herbert Xu On Sun, Mar 04, 2018 at 12:44:59PM +0100, Harald van Dijk wrote: > > command: set -- a ""; space=" "; printf "<%s>" "$@"$space > bash: <a><> > dash 0.5.8: <a>< > > dash 0.5.9.1: <a>< > > dash patched: <a><> This is actually composed of two bugs. First of all our tracking of quotemark is wrong so anything after "$@" becomes quoted. Once we fix that then the problem is that the first space character after "$@" is not recognised as an IFS. This patch fixes both. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-03-25Revert "[BUILTIN] Remove unnecessary restoration of format string in printf"Herbert Xu This reverts commit 7bb413255368e94395237d789f522891093c5774. The commit breaks printf with more than argument. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> 2018-03-22parser: Fix backquote support in here-document EOF markHerbert Xu