# File cli/ruby-debug/commands/info.rb, line 428
      def help(args)
        if args[1] 
          s = args[1]
          subcmd = Subcommands.find do |try_subcmd| 
            (s.size >= try_subcmd.min) and
              (try_subcmd.name[0..s.size-1] == s)
          end
          if subcmd
            str = subcmd.short_help + '.'
            if 'file' == subcmd.name and args[2]
              s = args[2]
              subsubcmd = InfoFileSubcommands.find do |try_subcmd|
                (s.size >= try_subcmd.min) and
                  (try_subcmd.name[0..s.size-1] == s)
              end
              if subsubcmd
                str += "\n" + subsubcmd.short_help + '.'
              else
                str += "\nInvalid file attribute #{args[2]}."
              end
            else
              str += "\n" + subcmd.long_help if subcmd.long_help
            end
            return str
          else
            return "Invalid 'info' subcommand '#{args[1]}'."
          end
        end
        s = %{
          Generic command for showing things about the program being debugged.
          -- 
          List of info subcommands:
          --  
        }
        for subcmd in Subcommands do
          s += "info #{subcmd.name} -- #{subcmd.short_help}\n"
        end
        return s
      end