# File lib/rouge/cli.rb, line 120
      def self.doc
        return enum_for(:doc) unless block_given?

        yield %|usage: rougify help <command>|
        yield %||
        yield %|print help info for <command>.|
      end

      def self.parse(argv)
        opts = { :mode => CLI }
        until argv.empty?
          arg = argv.shift
          klass = class_from_arg(arg)
          if klass
            opts[:mode] = klass
            next
          end
        end
        new(opts)
      end

      def initialize(opts={})
        @mode = opts[:mode]
      end

      def run
        @mode.doc.each(&method(:puts))
      end
    end