#compdef url

_url() {
  local ret=1 context curcontext="$curcontext" state line
  typeset -A opt_args

  _arguments -C -w -s \
    '(-h --help)'{-h,--help}'[show this help message and exit]' \
    '1: :->command'

  case $state in
    (command)
      declare -a commands
      local commands=(
        encode:'encode unencoded text'
        decode:'decode encoded text'
      )
      _describe -t commands command commands && ret=0 ;;
  esac

  return ret
}