File: //usr/share/zsh/functions/Completion/X/_x_arguments
#compdef -P */X11(|R<4->)/*
local ret long xargs opts rawret nm="$compstate[nmatches]"
xargs=(
  '-display:display:_x_display'
  '-geometry:geometry:_x_geometry'
)
(( $# )) || xargs=( "$xargs[@]" '*:default: _default' )
long=$argv[(I)--]
if (( long )); then
  argv[long]=( "$xargs[@]" -- )
else
  set -- "$@" "$xargs[@]"
fi
opts=()
while [[ $1 = -(O*|[CRWsw]) ]]; do
  opts=($opts $1)
  [[ $1 = -R ]] && rawret=yes
  shift
done
_arguments -R "$opts[@]" "$@"
ret=$?
if [[ "$ret" = 300 ]]; then
  compstate[restore]=''
  [[ -z $rawret ]] && ret=$(( nm == $compstate[nmatches] ))
fi
return ret