Perl is designed to give you several ways to do anything, so consider picking the most readable one.

Wow, I'm being shot at from both sides. That means I *must* be right.

Perl doesn't have an infatuation with enforced privacy. It would prefer that you stayed out of its living room because you weren't invited, not because it has a shotgun

I'm a great believer in visual distinctions.

Just don't create a file called '-rf.'

I note that the Python folks still think they like JPython. I wonder how long that will last?

When in doubt, parenthesize. At the very least it will let some poor schmuck bounce on the % key in vi.