This is a good point. I hadn't considered passing undef. I did try passing "", which tanked immediately on the mv (complaining that when moving multiple files, the destination must be a directory).

I'll give undef a go the next time I burn. If it works, I'll modify the code accordingly. I absolutely hate the if statement in the subroutine. It completely ruins the modularity, so here's to hoping you're correct.

If things get any worse, I'll have to ask you to stop helping me.