57 lines
2 KiB
Bash
57 lines
2 KiB
Bash
# /etc/bash/bashrc.d/10-gentoo-title.bash
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# Set window title with the Title Definition String sequence. For screen, the
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# sequence defines the window title (%t) and for tmux, the pane_title (#T).
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# For tmux to be affected requires that its allow-rename option be enabled.
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# https://www.gnu.org/software/screen/manual/html_node/Control-Sequences.html
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case ${TERM} in
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screen*|tmux*)
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genfun_set_pane_title() {
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printf '\033k%s\033\\' "${HOSTNAME%%.*}"
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}
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PROMPT_COMMAND+=('genfun_set_pane_title')
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;;
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*)
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# If the TTY is that of sshd(8) then proceed no further. Alas,
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# there exist many operating environments in which the window
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# title would otherwise not be restored upon ssh(1) exiting.
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if [[ ${SSH_TTY} && ${SSH_TTY} == "$(tty)" ]]; then
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return
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fi
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esac
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# Assigns the basename of the current working directory, having sanitised it
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# with @Q parameter expansion. Useful for paths containing newlines and such.
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# As a special case, names consisting entirely of graphemes shall not undergo
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# the parameter expansion, for reasons of cleanliness.
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genfun_sanitise_cwd() {
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_cwd=${PWD##*/}
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if [[ ! ${_cwd} ]]; then
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_cwd=${PWD}
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elif [[ ${_cwd} == *[![:graph:]]* ]]; then
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_cwd=${_cwd@Q}
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fi
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}
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# Set window title with the Set Text Parameters sequence. For screen, the
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# sequence defines the hardstatus (%h) and for tmux, the window_name (#W).
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# For graphical terminal emulators, it is normal for the title bar be affected.
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# The only terminals permitted here are those for which there is empirical
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# evidence that the sequence is supported and that the UTF-8 character encoding
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# is handled correctly. Quite rightly, this precludes many vintage terminals.
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# https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-Operating-System-Commands
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case ${TERM} in
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alacritty |\
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foot* |\
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rxvt-unicode* |\
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screen* |\
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st-256color |\
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tmux* |\
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xterm* )
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genfun_set_win_title() {
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genfun_sanitise_cwd
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printf '\033]2;%s@%s - %s\007' "${USER}" "${HOSTNAME%%.*}" "${_cwd}"
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}
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PROMPT_COMMAND+=('genfun_set_win_title')
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esac
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