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zsh/Completion/Base/Utility/_describe

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#autoload
# ### Note: Calling this function twice during one completion operation, such
# ### that in each call there exists a pair of items having the same description
# ### as each other, and the two calls specify the same $_type, currently leads
# ### to garbled output; see workers/35229 (May 2015) and its thread (which also
# ### discusses at least two other issues, that may or may not be related to
# ### this one).
# This can be used to add options or values with descriptions as matches.
local _opt _expl _tmpm _tmpd _mlen _noprefix
local _type=values _descr _ret=1 _showd _nm _hide _args _grp _sep
local csl="$compstate[list]" csl2
local _oargv _argv _new _strs _mats _opts _i _try=0
local OPTIND OPTARG
local -a _jvx12
# Get the option.
while getopts "oOt:12JVx" _opt; do
case $_opt in
(o)
_type=options;;
(O)
_type=options
_noprefix=1
;;
(t)
_type="$OPTARG"
;;
(1|2|J|V|x)
_jvx12+=(-$_opt)
esac
done
shift $(( OPTIND - 1 ))
unset _opt
[[ "$_type$_noprefix" = options && ! -prefix [-+]* ]] && \
zstyle -T ":completion:${curcontext}:options" prefix-needed &&
return 1
# Do the tests. `showd' is set if the descriptions should be shown.
zstyle -T ":completion:${curcontext}:$_type" verbose && _showd=yes
zstyle -s ":completion:${curcontext}:$_type" list-separator _sep || _sep=--
zstyle -s ":completion:${curcontext}:$_type" max-matches-width _mlen ||
_mlen=$((COLUMNS/2))
_descr="$1"
shift
if [[ -n "$_showd" ]] &&
zstyle -T ":completion:${curcontext}:$_type" list-grouped; then
_oargv=( "$@" )
_grp=(-g)
else
_grp=()
fi
[[ "$_type" = options ]] &&
zstyle -t ":completion:${curcontext}:options" prefix-hidden &&
_hide="${(M)PREFIX##(--|[-+])}"
_tags "$_type"
while _tags; do
while _next_label $_jvx12 "$_type" _expl "$_descr"; do
if (( $#_grp )); then
set -- "$_oargv[@]"
_argv=( "$_oargv[@]" )
_i=1
(( _try++ ))
while (( $# )); do
_strs="_a_$_try$_i"
if [[ "$1" = \(*\) ]]; then
eval local "_a_$_try$_i;_a_$_try$_i"'='$1
else
eval local "_a_$_try$_i;_a_$_try$_i"'=( "${'$1'[@]}" )'
fi
_argv[_i]="_a_$_try$_i"
shift
(( _i++ ))
if [[ "$1" = (|-*) ]]; then
_mats=
else
_mats="_a_$_try$_i"
if [[ "$1" = \(*\) ]]; then
eval local "_a_$_try$_i;_a_$_try$_i"'='$1
else
eval local "_a_$_try$_i;_a_$_try$_i"'=( "${'$1'[@]}" )'
fi
_argv[_i]="_a_$_try$_i"
shift
(( _i++ ))
fi
_opts=( "${(@)argv[1,(i)--]:#--}" )
shift "$#_opts"
(( _i += $#_opts ))
if [[ $1 == -- ]]; then
shift
(( _i++ ))
fi
if [[ -n $_mats ]]; then
compadd "$_opts[@]" -2 -o nosort "${_expl[@]}" -D $_strs -O $_mats - \
"${(@)${(@M)${(@P)_mats}##([^:\\]|\\?)##}//\\(#b)(?)/$match[1]}"
else
compadd "$_opts[@]" -2 -o nosort "${_expl[@]}" -D $_strs - \
"${(@)${(@M)${(@P)_strs}##([^:\\]|\\?)##}//\\(#b)(?)/$match[1]}"
fi
done
set - "$_argv[@]"
fi
if [[ -n "$_showd" ]]; then
compdescribe -I "$_hide" "$_mlen" "$_sep " _expl "$_grp[@]" "$@"
else
compdescribe -i "$_hide" "$_mlen" "$@"
fi
compstate[list]="$csl"
while compdescribe -g csl2 _args _tmpm _tmpd; do
compstate[list]="$csl $csl2"
[[ -n "$csl2" ]] && compstate[list]="${compstate[list]:s/rows//}"
compadd "$_args[@]" -d _tmpd -a _tmpm && _ret=0
done
done
(( _ret )) || return 0
done
return 1