    # File lib/rubygems/commands/contents_command.rb, line 8
      def initialize
        super 'contents', 'Display the contents of the installed gems',
              :specdirs => [], :lib_only => false

        add_version_option

        add_option('-s', '--spec-dir a,b,c', Array,
                   "Search for gems under specific paths") do |spec_dirs, options|
          options[:specdirs] = spec_dirs
        end

        add_option('-l', '--[no-]lib-only',
                   "Only return files in the Gem's lib_dirs") do |lib_only, options|
          options[:lib_only] = lib_only
        end
      end