Of course you are right. I thought this same thing, and tried to allude to these problems in my post. But I am young and brash and still try to reduce, perhaps too far.

Mostly because it's fun.

On an aside, if the @files array is not needed then japhy's solution which removes one whole regex evaluation must be considered better by some definition of efficiency. Those things are expensive.

Ira,

"My thoughts are my own, I think."
~Me, I think