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# vim: filetype=sh
# >>> prompt <<<
if [ -n "${SSH_CONNECTION-}" ]; then
_hc='\fy.' # yellow hostname for SSH remote
else
_hc='\fb.' # blue hostname for local
fi
if [ "$(id -u)" -eq 0 ]; then
_uc='\fr.' # red username for root
_2c='\fr.' # red PS2 for root
else
_uc='\fc.' # cyan username for non-root
_2c= # PS2 in normal color for non-root user
fi
: ${LOGNAME:=$(logname)}
: ${HOSTNAME:=$(uname -n)}
# the main prompt ($YASH_PS1) contains the username, hostname, working
# directory, last exit status (only if non-zero)
YASH_PS1=$_uc'${LOGNAME}'$_hc'@${HOSTNAME}\fdi. '\
'${PWD/#$HOME/\~} \fD.${{?:/0/}:+\\fr.$?\\fd. }\$ '
YASH_PS1P='\fkt.' # predicted command
YASH_PS1R='\fc.$(git branch --show-current 2>/dev/null)' # on the right
YASH_PS1S='\fo.'
# following lines
YASH_PS2=$_2c'> '
YASH_PS2R=
YASH_PS2S=$YASH_PS1S
YASH_PS4='\fm.+ '
YASH_PS4S='\fmo.'
unset _hc _uc _2c
# no escape sequences allowed in the POSIXly-correct mode.
PS1='${LOGNAME}@${HOSTNAME%%.*} '$PS1
# >>> options <<<
# variables needed for command history
HISTFILE=${XDG_CACHE_HOME:=~/.cache}/yash_history
HISTSIZE=5000
# enable bash-like extended expansion
set --brace-expand
# enable recursive pathname expansion
set --extended-glob
# don't implicitly expand non-existent variables to empty strings
set --no-unset
# don't save commands starting with a space in history
set --hist-space
set --vi
# if yash is built with line-editing enabled...
if command --identify --builtin-command bindkey >/dev/null; then
# print job status update ASAP, but only while line-editing
set --notify-le
# some terminfo data are broken; meta flags have to be ignored for UTF-8
set --le-no-conv-meta
# enable command line prediction
set --le-predict
# key bindings for vi mode, some of which are from emacs mode
bindkey --vi-insert '\#' eof-or-delete
bindkey --vi-insert '\$' backward-kill-line
bindkey --vi-insert '\N' complete-next-column
bindkey --vi-insert '\P' complete-prev-column
bindkey --vi-insert '\^A' beginning-of-line
bindkey --vi-insert '\^B' backward-char
bindkey --vi-insert '\^D' eof-or-delete
bindkey --vi-insert '\^E' end-of-line
bindkey --vi-insert '\^F' forward-char
bindkey --vi-insert '\^K' forward-kill-line
bindkey --vi-insert '\^L' clear-and-redraw-all
bindkey --vi-insert '\^N' beginning-search-forward
bindkey --vi-insert '\^O' clear-candidates
bindkey --vi-insert '\^P' beginning-search-backward
bindkey --vi-insert '\^U' backward-kill-line
bindkey --vi-insert '\^W' backward-delete-viword
bindkey --vi-insert '\^Y' put-left
bindkey --vi-command '\^L' clear-and-redraw-all
bindkey --vi-command '\^N' beginning-search-forward
bindkey --vi-command '\^P' beginning-search-backward
fi
# ensure job control works as expected
case $- in (*m*)
trap - TSTP TTIN TTOU
esac
# if the terminal supports color...
if [ "$(tput colors 2>/dev/null || echo 0)" -ge 8 ]; then
# make command output colorful
if ls --color=auto -d / >/dev/null 2>&1; then
ls() { command ls --color=auto "$@"; }
fi
if grep --color=auto -q X <<<X 2>/dev/null; then
grep() { command grep --color=auto "$@"; }
fi
fi
# initialize event handlers
COMMAND_NOT_FOUND_HANDLER=()
PROMPT_COMMAND=()
# find escape sequence to change terminal window title
case "$TERM" in
(xterm|xterm[+-]*|gnome|gnome[+-]*|putty|putty[+-]*|cygwin)
_tsl='\033];' _fsl='\a' ;;
(*)
_tsl=$( (tput tsl 0; echo) 2>/dev/null |
sed -e 's;\\;\\\\;g' -e 's;;\\033;g' -e 's;;\\a;g' -e 's;%;%%;g')
_fsl=$( (tput fsl ; echo) 2>/dev/null |
sed -e 's;\\;\\\\;g' -e 's;;\\033;g' -e 's;;\\a;g' -e 's;%;%%;g') ;;
esac
# if terminal window title can be changed...
if [ "$_tsl" ] && [ "$_fsl" ]; then
# set terminal window title on each prompt
_set_term_title()
if [ -t 2 ]; then
printf "$_tsl"'%s@%s:%s'"$_fsl" "${LOGNAME}" "${HOSTNAME%%.*}" \
"${${PWD:/$HOME/\~}/#$HOME\//\~\/}" >&2
fi
PROMPT_COMMAND=("$PROMPT_COMMAND" '_set_term_title')
# reset window title when changing host or user
ssh() {
if [ -t 2 ]; then printf "$_tsl"'ssh %s'"$_fsl" "$*" >&2; fi
command ssh "$@"
}
su() {
if [ -t 2 ]; then printf "$_tsl"'su %s'"$_fsl" "$*" >&2; fi
command su "$@"
}
doas() {
if [ -t 2 ]; then printf "$_tsl"'doas %s'"$_fsl" "$*" >&2; fi
command doas "$@"
}
fi
# when a directory name is entered as a command, treat as "cd"
_autocd()
if [ -d "$1" ]; then
HANDLED=true
cd -- "$@"
break -i
fi
COMMAND_NOT_FOUND_HANDLER=("$COMMAND_NOT_FOUND_HANDLER" '_autocd "$@"')
# print file type when executing non-executable files
_file_type()
if [ -e "$1" ] && ! [ -d "$1" ]; then
file -- "$1"
fi
COMMAND_NOT_FOUND_HANDLER=("$COMMAND_NOT_FOUND_HANDLER" '_file_type "$@"')
# >>> common aliases and functions <<<
alias -- -='cd -'
alias la='ls -a'
alias ll='ls -l'
alias lla='ll -a'
alias o='xdg-open'
# usage: weather [some place]
# defaults to london
function weather() {
curl v2.wttr.in/${1:-london}
}
# adds venv bin to path. python devs are not POSIX :(
function venv() {
export PATH="$(pwd)/.venv/bin:$PATH"
}
# try to load a host-specific file now
[ -e ${XDG_CONFIG_HOME:=~/.config}/yash/$(uname -n) ] && . $XDG_CONFIG_HOME/yash/$(uname -n)
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