rbfu autocompletion for zsh

_rbfu.zsh

#compdef rbfu

local curcontext="$curcontext" state line _rubies _rubies_dir ret=1

_arguments -w -S \
           '(-)--help[show usage and exit]: :->noargs' \
           '1: :->versions' \
           '*::: :->args' && ret=0

case $state in
  versions)
    _rubies_dir="${RBFU_RUBIES}"
    [[ ! -d "${_rubies_dir}" ]] && _rubies_dir="${HOME}/.rbfu/rubies"

    _rubies=( $(ls -1 "${_rubies_dir}" 2>/dev/null | sed -e 's/^/@/') )
    _rubies+=( $(echo "@system") )

    _values 'rubies' $_rubies && ret=0
    ;;
  args)
    _normal && ret=0
    ;;
esac

return $ret