diff options
Diffstat (limited to 'app-shells/bash/files/bashrc.d/10-gentoo-title.bash')
| -rw-r--r-- | app-shells/bash/files/bashrc.d/10-gentoo-title.bash | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/app-shells/bash/files/bashrc.d/10-gentoo-title.bash b/app-shells/bash/files/bashrc.d/10-gentoo-title.bash new file mode 100644 index 000000000000..56afcf213045 --- /dev/null +++ b/app-shells/bash/files/bashrc.d/10-gentoo-title.bash @@ -0,0 +1,55 @@ +# /etc/bash/bashrc.d/10-gentoo-title.bash + +# Set window title with the Title Definition String sequence. For screen, the +# sequence defines the window title (%t) and for tmux, the pane_title (#T). +# For tmux to be affected requires that its allow-rename option be enabled. +# https://www.gnu.org/software/screen/manual/html_node/Control-Sequences.html +case ${TERM} in + screen*|tmux*) + genfun_set_pane_title() { + printf '\033k%s\033\\' "${HOSTNAME%%.*}" + } + PROMPT_COMMAND+=('genfun_set_pane_title') + ;; + *) + # If the TTY is that of sshd(8) then proceed no further. Alas, + # there exist many operating environments in which the window + # title would otherwise not be restored upon ssh(1) exiting. + if [[ ${SSH_TTY} && ${SSH_TTY} == "$(tty)" ]]; then + return + fi +esac + +# Assigns the basename of the current working directory, having sanitised it +# with @Q parameter expansion. Useful for paths containing newlines and such. +# As a special case, names consisting entirely of graphemes shall not undergo +# the parameter expansion, for reasons of cleanliness. +genfun_sanitise_cwd() { + _cwd=${PWD##*/} + if [[ ! ${_cwd} ]]; then + _cwd=${PWD} + elif [[ ${_cwd} == *[![:graph:]]* ]]; then + _cwd=${_cwd@Q} + fi +} + +# Set window title with the Set Text Parameters sequence. For screen, the +# sequence defines the hardstatus (%h) and for tmux, the window_name (#W). +# For graphical terminal emulators, it is normal for the title bar be affected. +# The only terminals permitted here are those for which there is empirical +# evidence that the sequence is supported and that the UTF-8 character encoding +# is handled correctly. Quite rightly, this precludes many vintage terminals. +# https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-Operating-System-Commands +case ${TERM} in + alacritty |\ + foot* |\ + rxvt-unicode* |\ + screen* |\ + tmux* |\ + xterm* ) + genfun_set_win_title() { + genfun_sanitise_cwd + printf '\033]2;%s@%s - %s\007' "${USER}" "${HOSTNAME%%.*}" "${_cwd}" + } + PROMPT_COMMAND+=('genfun_set_win_title') +esac |