class Byebug::InfoCommand

def help(args)
  # specific subcommand help
  if args[1]
    subcmd = find(Subcommands, args[1])
    return "Invalid \"info\" subcommand \"#{args[1]}\"." unless subcmd
    str = subcmd.short_help + '.'
    if 'file' == subcmd.name and args[2]
      subsubcmd = find(InfoFileSubcommands, args[2])
      return str += "\nInvalid \"file\" attribute \"#{args[2]}\"." \
        unless subsubcmd
      str += "\n" + subsubcmd.short_help + '.'
    else
      str += "\n" + subcmd.long_help if subcmd.long_help
    end
    return str
  end
  # general help
  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