# File lib/thor/base.rb, line 415
        def print_options(shell, options, group_name=nil)
          return if options.empty?

          list = []
          padding = options.collect{ |o| o.aliases.size }.max.to_i * 4

          options.each do |option|
            item = [ option.usage(padding) ]
            item.push(option.description ? "# #{option.description}" : "")

            list << item
            list << [ "", "# Default: #{option.default}" ] if option.show_default?
          end

          shell.say(group_name ? "#{group_name} options:" : "Options:")
          shell.print_table(list, :ident => 2)
          shell.say ""
        end