The key word in my reply however was "generally" in the first sentence. Generally, as elaborated in my previous reply, chop is not such a useful function.

Oh, I agree that it works for OP's problem as stated. But it is a fragile solution. Very likely that doesn't matter in OP's case. But in the interests of general education it is worth noting that chop is unfussy about what it removes and that chomp only removes trailing contents matching $/, and that $/ may contain anything.