Creating help text from map of commands

ConsoleLoop.scala

  val commands = ListMap(
    "updates" -> "show the last updates",
    "help"    -> "that is, print this text",
    "exit"    -> "nuff said, quit the program",
    "upupup"  -> "Tumc tumc tumc"
  )
  val helpTabStop = 8
  val helpText = "Commands list:\n" + commands.collect({
    case (cmd, desc) => cmd + " "*(helpTabStop - cmd.length) + "- " + desc
  }).mkString("\n")