This is not a bad idea, it will not break compatibility but adds a
second feature to determine the actual type of the integer.
But such a change is a source of subtle errors - in the _expression_ f(type(x)) the function f will be called with two values, and this may mess its little mind if it has optional arguments. Also, {type(x)} now has length 2.
(Saying this because string.gsub is always biting me this way)
