NAME

catgirl — IRC client

DESCRIPTION

catgirl(1) is a TLS-only terminal IRC client.

Notable Features

Tab complete: most recently seen or mentioned nicks are completed first. Commas are inserted between multiple nicks.
Prompt: the prompt clearly shows whether input will be interpreted as a command or sent as a message.
Split scroll: keeps the latest messages in view while scrolling.
URL detection: recent URLs from a particular user or matching a substring can be opened or copied.
Nick coloring: color generation based on usernames remains stable across nick changes. Mentions of users in messages are colored.
Topic diffing: the modified portion of a channel topic change is highlighted.
Ignore: visibility of filtered messages can be toggled.
Security: on FreeBSD and OpenBSD, the restrict option enables tight sandboxing. Sandboxing is always used on OpenBSD.

Non-features

Dynamic configuration: all configuration happens in a simple text file or on the command line.
Multi-network: a terminal multiplexer such as screen(1) or tmux(1) (or just your regular terminal emulator tabs) can be used to connect catgirl to multiple networks.
Reconnection: when the connection to the server is lost, catgirl exits. It can be run in a loop or connected to a bouncer, such as pounce.
CTCP: apart from ACTION, this protocol is useless at best and enables abuse at worst.
Protocol coverage: IRCv3 extensions are implemented only where they contribute to the intended user experience.
Cleartext IRC: TLS is now ubiquitous and certificates are easy to obtain.

INSTALLING

catgirl requires ncurses and libtls, provided by either LibreTLS (for OpenSSL) or by LibreSSL. It targets FreeBSD, OpenBSD, macOS and Linux. catgirl and libtls may be packaged for your system. Check the Repology pages for catgirl and libretls.

$ ./configure
$ make all
# make install

Packagers are encouraged to patch in their own text macros in input.c.

If installing libtls manually to /usr/local, for example, make sure /usr/local/lib appears in /etc/ld.so.conf or /etc/ld.so.conf.d/* and be sure to run ldconfig(8) once the library is installed. Set PKG_CONFIG_PATH for ./configure to find it.

$ PKG_CONFIG_PATH=/usr/local/lib/pkgconfig ./configure

The sandman wrapper is provided for macOS to stop and start catgirl on system sleep and wake. Install it as follows:

$ make -C scripts sandman
# make -C scripts install

FILES

chat.h: global state and declarations
chat.c: startup and event loop
irc.c: IRC connection and parsing
ui.c: curses interface
window.c: window management
input.c: input handling
handle.c: IRC message handling
command.c: command handling
buffer.c: line wrapping
edit.c: line editing
complete.c: tab complete
url.c: URL detection
filter.c: message filtering
log.c: chat logging
config.c: configuration parsing
xdg.c: XDG base directories

scripts/chat.tmux.conf: example tmux(1) configuration for multiple networks and automatic reconnects
scripts/sandman.m: sleep/wake wrapper for macOS
scripts/notify-send.scpt: notify-send(1) in AppleScript
scripts/build-chroot.sh: chroot builder for OpenBSD and FreeBSD
scripts/chroot-prompt.sh: name prompt wrapper for chroot
scripts/chroot-man.sh: man(1) implementation for chroot
scripts/sshd_config: sshd(8) configuration for public chroot

CONTRIBUTING

The upstream URL of this project is ⟨https://git.causal.agency/catgirl⟩. Contributions in any form can be sent to <list+catgirl@causal.agency>. For sending patches by email, see ⟨https://git-send-email.io⟩. Mailing list archives are available at ⟨https://causal.agency/list/catgirl.html⟩.

Monetary contributions can be donated via Liberapay.