>>It may be insurance, but it isn't *necessary*.
>
>Insurance isn't "necessary" but it is often smart, especially when, in a case like this, it is sooooo cheap!
>I call it "defensive coding" and while one never knows if it pays off, it surely can't hurt.

It could hurt if they change UPPER which should be just as likely. ;) Seriously, I suppose you're right. It wouldn't hurt, except that it will be painful to alter my habits.

>>
>>BTW. How come you're not requesting they document the case of the returned value?
>
>First, how do you know that I didn't? < s > But in fact I haven't and won't, because over a dozen submissions to the standard documentation link have resulted in ZERO changes so far.
>
That's unfortunate!