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#autoload

# This can be used to add options or values with descriptions as matches.

local _opt _expl _tmpm _tmpd
local _type=values _descr _ret=1 _showd _nm _hide _args _grp _sep
local csl="$compstate[list]" csl2

# Get the option.

if [[ "$1" = -o ]]; then
  _type=options
  shift
elif [[ "$1" = -t ]]; then
  _type="$2"
  shift 2
elif [[ "$1" = -t* ]]; then
  _type="${1[3,-1]}"
  shift
fi

# 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=--

if zstyle -T ":completion:${curcontext}:$_type" list-grouped; then
  local _argv _new _strs _mats _opts _i=2

  _argv=( "$@" )
  _grp=(-g)
  _new=( "$1" )
  shift

  while (( $# )); do

    _strs="_a_$_i"
    eval local "_a_$_i;_a_$_i"'=( "${'$1'[@]}" )'
    _argv[_i]="_a_$_i"
    shift
    (( _i++ ))

    if [[ "$1" = (|-*) ]]; then
      _mats=
    else
      _matss="_a_$_i"
      eval local "_a_$_i;_a_$_i"'=( "${'$1'[@]}" )'
      _argv[_i]="_a_$_i"
      shift
      (( _i++ ))
    fi

    _opts=( "${(@)argv[1,(i)--]:#--}" )
    shift "$#_opts"
    (( _i += $#_opts ))
    if [[ $1 == -- ]]; then
      shift
      (( _i++ ))
    fi

    if [[ -n $_mats ]]; then
      compadd "$_opts[@]" -O $_strs -D $_mats -a $_strs
    else
      compadd "$_opts[@]" -O $_strs -a $_strs
    fi
  done

  set - "$_argv[@]"
else
  _grp=()
fi

_descr="$1"
shift

[[ "$_type" = options ]] &&
    zstyle -t ":completion:${curcontext}:options" prefix-hidden &&
        _hide="${(M)PREFIX##(--|[-+])}"

_tags "$_type"
while _tags; do
  while _next_label "$_type" _expl "$_descr"; do

    if [[ -n "$_showd" ]]; then
      compdescribe -I "$_hide" "$_sep " _expl "$_grp[@]" "$@"
    else
      compdescribe -i "$_hide" "$@"
    fi

    compstate[list]="$csl"

    while compdescribe -g csl2 _args _tmpm _tmpd; do

      compstate[list]="$csl $csl2"

      compadd "$_args[@]" -d _tmpd -a _tmpm && _ret=0
    done
  done
  (( _ret )) || return 0
done

return 1