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#autoload

# This should be used to complete parameter names if you need some of the
# extra options of compadd. It completes only non-local parameters.
# If the first argument is `-s' or `-b' auto_param_slash will be tested
# and slashes will be added to parameters containing a directory. `-s' is
# for parameter expansions without braces and `-b' is for expansions with
# braces. A `-' as the first argument is ignored and in all cases all
# other arguments will be given to `compadd'.


setopt localoptions extendedglob

local pars expl slash suf

if [[ "$1" = -s ]]; then
  slash=normal
  suf="$2"
  shift 2
elif [[ "$1" = -b ]]; then
  slash=brace
  suf="$2"
  shift 2
elif [[ "$1" = - ]]; then
  shift
fi

_description expl parameter

if zmodload -e parameter; then
  setopt localoptions extendedglob
  pars=( ${(k)parameters[(R)^*local*]} )
else
  pars=( ${${${(f)"$(typeset +)"}:#*local *}##* } )
fi

if [[ -n "$slash" && -o autoparamslash ]]; then
  local i dirs nodirs ret=1

  dirs=()
  nodirs=()
  for i in $pars; do
    if [[ -d "${(P)i}" ]]; then
      dirs=( $dirs $i )
    else
      nodirs=( $nodirs $i )
    fi
  done

  if [[ "$slash" = normal ]]; then
    compadd -S "/${suf%% #}" -r ' [/:' "$expl[@]" "$@" - $dirs && ret=0
    compadd -S "$suf" -r ' [:' "$expl[@]" "$@" - $nodirs && ret=0
  elif [[ "$slash" = brace ]]; then
    compadd -S "}/${suf%% #}" -r '-:?#%+=[/}' "$expl[@]" "$@" - $dirs && ret=0
    compadd -S "}$suf" -r '-:?#%+=[/}' "$expl[@]" "$@" - $nodirs && ret=0
  fi

  return ret
else
  if [[ "$slash" = normal ]]; then
    compadd -S "$suf" -r ' [:' "$expl[@]" "$@" - $pars
  elif [[ "$slash" = brace ]]; then
    compadd -S "}$suf" -r '-:?#%+=[/}' "$expl[@]" "$@" - $pars
  else
    compadd "$expl[@]" "$@" - $pars
  fi
fi