I just checked the documentation of lisps implementation and it is different from my code. If the input lists have a different size, the shortest list decides t

I just checked the documentation of lisps implementation and it is different from my code. If the input lists have a different size, the shortest list decides the result length and everything else is discarded. This is of course possible to implement in Scala too, but I think it is a very bad thing to do that which can lead to bugs quite easy. I prefer my solution in that case.