#compdef kitchen
  # ------------------------------------------------------------------------------
  # Copyright (c) 2014 Github zsh-users - http://github.com/zsh-users
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are met:
  #     * Redistributions of source code must retain the above copyright
  #       notice, this list of conditions and the following disclaimer.
  #     * Redistributions in binary form must reproduce the above copyright
  #       notice, this list of conditions and the following disclaimer in the
  #       documentation and/or other materials provided with the distribution.
  #     * Neither the name of the zsh-users nor the
  #       names of its contributors may be used to endorse or promote products
  #       derived from this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  # DISCLAIMED. IN NO EVENT SHALL ZSH-USERS BE LIABLE FOR ANY
  # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  # ------------------------------------------------------------------------------
  # Description
  # -----------
  #
  #  Completion script for Test Kitchen (http://kitchen.ci/).
  #
  # ------------------------------------------------------------------------------
  # Authors
  # -------
  #
  #  * Peter Eisentraut (https://github.com/petere)
  #
  # ------------------------------------------------------------------------------

  
  _kitchen() {

    local curcontext="$curcontext" state line
    typeset -A opt_args
  
    _arguments '1: :->cmds'\
               '2: :->args'
  
    case $state in
      cmds)
        _kitchen_commands
        ;;
      args)
        case $line[1] in
          converge|create|destroy|diagnose|list|setup|test|verify)
            compadd 'all'
            _kitchen_instances
            ;;
          login)
            _kitchen_instances
            ;;
        esac
        ;;
    esac
  }
  
  _kitchen_commands() {
    local commands
  
    commands=("${(@f)$(_call_program commands $service help | sed -n 's/^  kitchen \([[:alpha:]]*\) [ [].*# \(.*\)$/\1:\2/p')}")
    _describe -t commands 'kitchen commands' commands

  }
  
  _kitchen_instances() {

    if [[ $_kitchen_instances_cache_dir != $PWD ]]; then
      unset _kitchen_instances_cache
    fi
    if [[ ${+_kitchen_instances_cache} -eq 0 ]]; then
      _kitchen_instances_cache=(${(f)"$(_call_program instances $service list -b 2>/dev/null)"})
      _kitchen_instances_cache_dir=$PWD
    fi
    _wanted instances expl 'instance' compadd -a _kitchen_instances_cache

  }
  
  _kitchen "$@"