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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 configuration keys:
#
# history_list -- display lists of available matches
# history_stop -- prevent looping at beginning and end of matches
# during menu-completion
# history_sort -- sort matches lexically (default is to sort by age)
# history_remove_all_dups --
# remove /all/ duplicate matches rather than just
# consecutives
#
_history_complete_word () {
local expl direction
if [[ $WIDGET = *newer ]]; then
direction=older
else
direction=newer
fi
[[ -z "$compconfig[history_list]" ]] && compstate[list]=''
if [[ -n "$compstate[old_list]" &&
( -n "$compconfig[history_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'
[[ "$compconfig[history_stop]" = verbose ]] &&
_message 'beginning of history reached'
elif [[ "$_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'
[[ "$compconfig[history_stop]" = verbose ]] &&
_message 'end of history reached'
elif [[ "$_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 () {
if [[ -n "$compconfig[history_list]" ]]; then
if [[ -n "$compconfig[history_sort]" ]]; then
_description expl 'history word'
else
_description -V expl 'history word'
fi
else
if [[ -n "$compconfig[history_sort]" ]]; then
expl=()
else
expl=('-V' '')
fi
fi
[[ -n "$_hist_stop" ]] && PREFIX="$_hist_old_prefix"
local rem_dups
if [[ -n "$compconfig[history_remove_all_dups]" ]]; then
rem_dups=''
else
rem_dups='-1'
fi
compgen "$expl[@]" $rem_dups -Q -H 0 ''
_hist_menu_length="$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 "$_hist_stop" ]] && _hist_stop=''
}
_history_complete_word "$@"
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