class Byebug::SetCommand

def get_onoff(arg, default)
  return default if arg.nil?
  case arg
  when '1', 'on', 'true'
    true
  when '0', 'off', 'false'
    false
  else
    [nil, "Expecting 'on', 1, true, 'off', 0, false. Got: #{arg}.\n"]
  end
end