Atom snippet - Ruby optparse template

snippets.cson

'.source.ruby':
 
 'Insert Ruby optparser':
    'prefix': 'optparse'
    'body':
      '''
      require 'optparse'

      options = {}

      OptionParser.new do |parser|
        parser.banner = 'Usage: ${1:script_name} --help'
        parser.default_argv = ARGV

        parser.on('--${2:arg0}=val0', String, '') do |string|
          options[:${2:arg0}] = string
        end

        parser.on('--${3:arg1}=first,second', Array, '') do |array|
          options[:${3:arg1}] = array
        end

        parser.on('--[no-]${4:arg2}', '') do |boolean|
          options[:${4:arg2}] = boolean
        end

        parser.on('-h', '--help', 'How to use') do
          puts parser
          exit
        end
      end.parse!
      '''