От скуки решил разобраться с работой автодополнения в bash. Вот реализация автодополнения для audtool — утилиты для управления Audacious. Дополняются все команды для версии 1.5.1, дополняются номера треков (не для всех команд получилось), поля для команд, выдающих метаданные, дополняются даже пути с пробелами (спасибо костылю _filedir в bash-completion.
_audtool() {
local cur prev opts pl pq
COMPREPLY=()
cur="${COMP_WORDS[COMP_CWORD]}"
prev="${COMP_WORDS[COMP_CWORD-1]}"
opts="current-song current-song-filename current-song-length
current-song-length-seconds current-song-length-frames
current-song-output-length current-song-output-length-seconds
current-song-output-length-frames current-song-bitrate
current-song-bitrate-kbps current-song-frequency current-song-frequency-khz
current-song-channels current-song-tuple-data current-song-info
playlist-advance playlist-reverse playlist-addurl playlist-insurl
playlist-addurl-to-new-playlist playlist-delete playlist-length
playlist-song playlist-song-filename playlist-song-length
playlist-song-length-seconds playlist-song-length-frames playlist-display
playlist-position playlist-jump playlist-clear playlist-repeat-status
playlist-repeat-toggle playlist-shuffle-status playlist-shuffle-toggle
playlist-tuple-data playqueue-add playqueue-remove playqueue-is-queued
playqueue-get-queue-position playqueue-get-list-position playqueue-length
playqueue-display playqueue-clear playback-play playback-pause
playback-playpause playback-stop playback-playing playback-paused
playback-stopped playback-status playback-seek playback-seek-relative
get-volume set-volume equalizer-activate equalizer-get equalizer-set
equalizer-get-preamp equalizer-set-preamp equalizer-get-band
equalizer-set-band mainwin-show playlist-show equalizer-show
filebrowser-show jumptofile-show preferences-show about-show activate
always-on-top get-skin set-skin version shutdown list-handlers help"
td="artist album title track_number year date genre comment file_name
file_ext file_path length formatter custom mtime"
pl=$(seq -s ' ' $(audtool playlist-length))
pq=$(seq -s ' ' $(audtool playqueue-length))
if [[ ${COMP_CWORD} -eq 1 ]]; then
COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
return 0
fi
case ${prev} in
playlist-addurl|playlist-addurl-to-new-playlist|playlist-insurl|\
set-skin)
_filedir
;;
playlist-delete|playlist-song|playlist-song-filename|\
playlist-song-length|playlist-song-length-seconds|\
playlist-song-length-frames|playqueue-add|playqueue-remove|\
playqueue-get-queue-position|playlist-jump)
COMPREPLY=( $(compgen -W "${pl}" -- ${cur}) )
;;
playqueue-get-list-position)
COMPREPLY=( $(compgen -W "${pq}" -- ${cur}) )
;;
current-song-tuple-data|playlist-tuple-data)
COMPREPLY=( $(compgen -W "${td}" -- ${cur}) )
;;
*)
COMPREPLY=()
;;
esac
}
complete -o filenames -F _audtool audtool
