#autoload

local name nopt xopt format gname hidden hide match opts tag
local -a ign gropt sort
local -a match mbegin mend

opts=()

xopt=(-X)
nopt=()
zparseopts -K -D -a nopt 1 2 V=gropt J=ign x=xopt

3="${${3##[[:blank:]]#}%%[[:blank:]]#}"
[[ -n "$3" ]] && _lastdescr=( "$_lastdescr[@]" "$3" )

zstyle -s ":completion:${curcontext}:$1" group-name gname &&
    [[ -z "$gname" ]] && gname="$1"

_setup "$1" "${gname:--default-}"

name="$2"

zstyle -s ":completion:${curcontext}:$1" format format ||
    zstyle -s ":completion:${curcontext}:descriptions" format format

if zstyle -s ":completion:${curcontext}:$1" hidden hidden &&
   [[ "$hidden" = (all|yes|true|1|on) ]]; then
  [[ "$hidden" = all ]] && format=''
  opts=(-n)
fi
zstyle -s ":completion:${curcontext}:$1" matcher match &&
    opts=($opts -M "$match")
[[ -n "$_matcher" ]] && opts=($opts -M "$_matcher")

# Use sort style, but ignore `menu' value to help _expand.
# Also don't override explicit use of -V.
if [[ -z "$gropt" ]]; then
  if zstyle -a ":completion:${curcontext}:$1" sort sort ||
     zstyle -a ":completion:${curcontext}:" sort sort
  then
    if [[ -z "${(@)sort:#(match|numeric|reverse)}" ]]; then
      gropt=( -o ${(j.,.)sort} )
    elif [[ "$sort" != (yes|true|1|on|menu) ]]; then
      gropt=( -o nosort )
    fi
  fi
else
  gropt=( -o nosort )
fi

if [[ -z "$_comp_no_ignore" ]]; then
  zstyle -a ":completion:${curcontext}:$1" ignored-patterns _comp_ignore ||
    _comp_ignore=()

  if zstyle -s ":completion:${curcontext}:$1" ignore-line hidden; then
    local -a qwords
    qwords=( ${words//(#m)[\[\]()\\*?#<>~\^\|]/\\$MATCH} )
    case "$hidden" in
    true|yes|on|1) _comp_ignore+=( $qwords );;
    current)       _comp_ignore+=( $qwords[CURRENT] );;
    current-shown)
	    [[ "$compstate[old_list]" = *shown* ]] &&
            _comp_ignore+=( $qwords[CURRENT] );;
    other)         _comp_ignore+=( $qwords[1,CURRENT-1]
				   $qwords[CURRENT+1,-1] );;
    esac
  fi

  # Ensure the ignore option is first so we can override it
  # for fake-always.
  (( $#_comp_ignore )) && opts=( -F _comp_ignore $opts )
else
  _comp_ignore=()
fi

tag="$1"

shift 2
if [[ -z "$1" && $# -eq 1 ]]; then
  format=
elif [[ -n "$format" ]]; then
  if [[ -z $2 ]]; then
    argv+=( h:${1%%( ##\((#b)([^\)]#[^0-9-][^\)]#)(#B)\)|)( ##\((#b)([0-9-]##)(#B)\)|)( ##\[(#b)([^\]]##)(#B)\]|)} H:1 )
    [[ -n $match[1] ]] && argv+=( m:$match[1] M:1 )
    [[ -n $match[2] ]] && argv+=( r:$match[2] R:1 )
    [[ -n $match[3] ]] && argv+=( o:$match[3] O:1 )
  fi

  zformat -f format "$format" "d:$1" "${(@)argv[2,-1]}"
fi

if [[ -n "$gname" ]]; then
  if [[ -n "$format" ]]; then
    set -A "$name" "$opts[@]" "$nopt[@]" "$gropt[@]" -J "$gname" "$xopt" "$format"
  else
    set -A "$name" "$opts[@]" "$nopt[@]" "$gropt[@]" -J "$gname"
  fi
else
  if [[ -n "$format" ]]; then
    set -A "$name" "$opts[@]" "$nopt[@]" "$gropt[@]" -J -default- "$xopt" "$format"
  else
    set -A "$name" "$opts[@]" "$nopt[@]" "$gropt[@]" -J -default-
  fi
fi

if ! (( ${funcstack[2,-1][(I)_description]} )); then
  local fakestyle descr
  for fakestyle in fake fake-always; do
    zstyle -a ":completion:${curcontext}:$tag" $fakestyle match ||
    continue

    descr=( "${(@M)match:#*[^\\]:*}" )

    opts=("${(@P)name}")
    if [[ $fakestyle = fake-always && $opts[1,2] = "-F _comp_ignore" ]]; then
      shift 2 opts
    fi
    compadd "${(@)opts}" - "${(@)${(@)match:#*[^\\]:*}:s/\\:/:/}"
    (( $#descr )) && _describe -t "$tag" '' descr "${(@)opts}"
  done
fi

return 0