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zsh/Completion/Commands/_history_complete_word
2000-04-01 20:43:43 +00:00

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#compdef -K _history-complete-older complete-word \e/ _history-complete-newer complete-word \e,
#
# Complete words from the history
#
# by Adam Spiers, with help gratefully received from
# Sven Wischnowsky and Bart Schaefer
#
# Available styles:
#
# :history-words:list -- display lists of available matches
# :history-words:stop -- prevent looping at beginning and end of matches
# during menu-completion
# :history-words:sort -- sort matches lexically (default is to sort by age)
# :history-words:remove-all-dups --
# remove /all/ duplicate matches rather than just
# consecutives
#
_history_complete_word () {
local expl direction stop
if [[ $WIDGET = *newer ]]; then
direction=newer
else
direction=older
fi
zstyle -s ":completion:${curcontext}:history-words" stop stop
zstyle -t ":completion:${curcontext}:history-words" list || compstate[list]=''
if [[ -n "$compstate[old_list]" &&
( -n "$stop" || "$compstate[insert]" = menu ) ]] ; then
# array of matches is newest -> oldest (reverse of history order)
if [[ "$direction" == 'older' ]]; then
if [[ compstate[old_insert] -eq $_hist_menu_length ||
"$_hist_stop" == 'oldest' ]]; then
_hist_stop='oldest'
[[ "$stop" = verbose ]] &&
_message 'beginning of history reached'
elif [[ "$_hist_stop" == 'newest' ]]; then
zle -Rc
_history_complete_word_gen_matches
else
compstate[old_list]=keep
(( compstate[insert] = compstate[old_insert] + 1 ))
fi
elif [[ "$direction" == 'newer' ]]; then
if [[ compstate[old_insert] -eq 1 || "$_hist_stop" == 'newest' ]]; then
_hist_stop='newest'
[[ "$stop" = verbose ]] && _message 'end of history reached'
elif [[ "$_hist_stop" == 'oldest' ]]; then
zle -Rc
_history_complete_word_gen_matches
else
compstate[old_list]=keep
(( compstate[insert] = compstate[old_insert] - 1 ))
fi
fi
else
_hist_stop=''
_hist_old_prefix="$PREFIX"
_history_complete_word_gen_matches
fi
[[ -n "$compstate[nmatches]" ]]
}
_history_complete_word_gen_matches () {
local opt
[[ -n "$_hist_stop" ]] && PREFIX="$_hist_old_prefix"
if zstyle -t ":completion:${curcontext}:history-words" remove-all-dups; then
opt=-
else
opt=-1
fi
if zstyle -t ":completion:${curcontext}:history-words" sort; then
opt="${opt}J"
else
opt="${opt}V"
fi
_wanted "$opt" history-words expl 'history word' \
compadd -Q - "$historywords[@]"
zstyle -t ":completion:${curcontext}:history-words" list ||
compstate[list]=
_hist_menu_length="$compstate[nmatches]"
case "$direction" in
newer) compstate[insert]=$_hist_menu_length
[[ -n "$_hist_stop" ]] && (( compstate[insert]-- ))
;;
older) compstate[insert]=1
[[ -n "$_hist_stop" ]] && (( compstate[insert]++ ))
;;
esac
[[ -n "$_hist_stop" ]] && _hist_stop=''
}
_history_complete_word "$@"