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ohmyzsh/lib/termsupport.zsh
2024-05-02 15:11:18 +02:00

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# Set terminal window and tab/icon title
#
# usage: title short_tab_title [long_window_title]
#
# See: http://www.faqs.org/docs/Linux-mini/Xterm-Title.html#ss3.1
# Fully supports screen, iterm, and probably most modern xterm and rxvt
# (In screen, only short_tab_title is used)
# Limited support for Apple Terminal (Terminal can't set window and tab separately)
function title {
setopt localoptions nopromptsubst
# Don't set the title if inside emacs, unless using vterm
[[ -n "${INSIDE_EMACS:-}" && "$INSIDE_EMACS" != vterm ]] && return
# if $2 is unset use $1 as default
# if it is set and empty, leave it as is
: ${2=$1}
case "$TERM" in
cygwin|xterm*|putty*|rxvt*|konsole*|ansi|mlterm*|alacritty*|st*|foot*|contour*)
print -Pn "\e]2;${2:q}\a" # set window name
print -Pn "\e]1;${1:q}\a" # set tab name
;;
screen*|tmux*)
print -Pn "\ek${1:q}\e\\" # set screen hardstatus
;;
*)
if [[ "$TERM_PROGRAM" == "iTerm.app" ]]; then
print -Pn "\e]2;${2:q}\a" # set window name
print -Pn "\e]1;${1:q}\a" # set tab name
else
# Try to use terminfo to set the title if the feature is available
if (( ${+terminfo[fsl]} && ${+terminfo[tsl]} )); then
print -Pn "${terminfo[tsl]}$1${terminfo[fsl]}"
fi
fi
;;
esac
}
ZSH_THEME_TERM_TAB_TITLE_IDLE="%15<..<%~%<<" #15 char left truncated PWD
ZSH_THEME_TERM_TITLE_IDLE="%n@%m:%~"
# Avoid duplication of directory in terminals with independent dir display
if [[ "$TERM_PROGRAM" == Apple_Terminal ]]; then
ZSH_THEME_TERM_TITLE_IDLE="%n@%m"
fi
# Runs before showing the prompt
function omz_termsupport_precmd {
[[ "${DISABLE_AUTO_TITLE:-}" != true ]] || return
title "$ZSH_THEME_TERM_TAB_TITLE_IDLE" "$ZSH_THEME_TERM_TITLE_IDLE"
}
# Runs before executing the command
function omz_termsupport_preexec {
[[ "${DISABLE_AUTO_TITLE:-}" != true ]] || return
emulate -L zsh
setopt extended_glob
# split command into array of arguments
local -a cmdargs
cmdargs=("${(z)2}")
# if running fg, extract the command from the job description
if [[ "${cmdargs[1]}" = fg ]]; then
# get the job id from the first argument passed to the fg command
local job_id jobspec="${cmdargs[2]#%}"
# logic based on jobs arguments:
# http://zsh.sourceforge.net/Doc/Release/Jobs-_0026-Signals.html#Jobs
# https://www.zsh.org/mla/users/2007/msg00704.html
case "$jobspec" in
<->) # %number argument:
# use the same <number> passed as an argument
job_id=${jobspec} ;;
""|%|+) # empty, %% or %+ argument:
# use the current job, which appears with a + in $jobstates:
# suspended:+:5071=suspended (tty output)
job_id=${(k)jobstates[(r)*:+:*]} ;;
-) # %- argument:
# use the previous job, which appears with a - in $jobstates:
# suspended:-:6493=suspended (signal)
job_id=${(k)jobstates[(r)*:-:*]} ;;
[?]*) # %?string argument:
# use $jobtexts to match for a job whose command *contains* <string>
job_id=${(k)jobtexts[(r)*${(Q)jobspec}*]} ;;
*) # %string argument:
# use $jobtexts to match for a job whose command *starts with* <string>
job_id=${(k)jobtexts[(r)${(Q)jobspec}*]} ;;
esac
# override preexec function arguments with job command
if [[ -n "${jobtexts[$job_id]}" ]]; then
1="${jobtexts[$job_id]}"
2="${jobtexts[$job_id]}"
fi
fi
# cmd name only, or if this is sudo or ssh, the next cmd
local CMD="${1[(wr)^(*=*|sudo|ssh|mosh|rake|-*)]:gs/%/%%}"
local LINE="${2:gs/%/%%}"
title "$CMD" "%100>...>${LINE}%<<"
}
autoload -Uz add-zsh-hook
if [[ -z "$INSIDE_EMACS" || "$INSIDE_EMACS" = vterm ]]; then
add-zsh-hook precmd omz_termsupport_precmd
add-zsh-hook preexec omz_termsupport_preexec
fi
# Keep terminal emulator's current working directory correct,
# even if the current working directory path contains symbolic links
#
# References:
# - Apple's Terminal.app: https://superuser.com/a/315029
# - iTerm2: https://iterm2.com/documentation-escape-codes.html (iTerm2 Extension / CurrentDir+RemoteHost)
# - Konsole: https://bugs.kde.org/show_bug.cgi?id=327720#c1
# - libvte (gnome-terminal, mate-terminal, …): https://bugzilla.gnome.org/show_bug.cgi?id=675987#c14
# Apparently it had a bug before ~2012 were it would display the unknown OSC 7 code
#
# As of May 2021 mlterm, PuTTY, rxvt, screen, termux & xterm simply ignore the unknown OSC.
# Don't define the function if we're inside Emacs or in an SSH session (#11696)
if [[ -n "$INSIDE_EMACS" || -n "$SSH_CLIENT" || -n "$SSH_TTY" ]]; then
return
fi
# Don't define the function if we're in an unsupported terminal
case "$TERM" in
# all of these either process OSC 7 correctly or ignore entirely
xterm*|putty*|rxvt*|konsole*|mlterm*|alacritty*|screen*|tmux*) ;;
contour*|foot*) ;;
*)
# Terminal.app and iTerm2 process OSC 7 correctly
case "$TERM_PROGRAM" in
Apple_Terminal|iTerm.app) ;;
*) return ;;
esac ;;
esac
# Emits the control sequence to notify many terminal emulators
# of the cwd
#
# Identifies the directory using a file: URI scheme, including
# the host name to disambiguate local vs. remote paths.
function omz_termsupport_cwd {
# Percent-encode the host and path names.
local URL_HOST URL_PATH
URL_HOST="$(omz_urlencode -P $HOST)" || return 1
URL_PATH="$(omz_urlencode -P $PWD)" || return 1
# Konsole errors if the HOST is provided
[[ -z "$KONSOLE_PROFILE_NAME" && -z "$KONSOLE_DBUS_SESSION" ]] || URL_HOST=""
# common control sequence (OSC 7) to set current host and path
printf "\e]7;file://%s%s\e\\" "${URL_HOST}" "${URL_PATH}"
}
# Use a precmd hook instead of a chpwd hook to avoid contaminating output
# i.e. when a script or function changes directory without `cd -q`, chpwd
# will be called the output may be swallowed by the script or function.
add-zsh-hook precmd omz_termsupport_cwd