class Byebug::ShowCommand

def help(args)
  if args[1]
    subcmd = find(Subcommands, args[1])
    return "Invalid \"show\" subcommand \"#{args[1]}\"." unless subcmd
    str = subcmd.short_help + '.'
    str += "\n" + subcmd.long_help if subcmd.long_help
    return str
  end
  ShowCommad.description + format_subcmds(Subcommands)
end