They can always run stderr through uniq. :-)

Not that I have anything much against redundancy. But I said that already.

I'd put my money where my mouth is, but my mouth keeps moving.

So far we've managed to avoid turning Perl into APL. :-)

In general, if you think something isn't in Perl, try it out, because it usually is. :-)

...this does not mean that some of us should not want, in a rather dispassionate sort of way, to put a bullet through csh's head.

Premature optimization is the root of all evil (or at least most of it) in programming.