Thanks to BrowserUK for pointing out the priority implications of the ordering of items in PATHEXT.

It leads to to another thought -- maybe somebody has already done it. There is a tremendous amount of information on this site and that other one, LinuxQuestions, and several other similar places. But that info is extremely hard to access. Is there something like a Wiki of info on Windows, Perl, or a thousand other computer issues? I have a huge library of books collected over 30-some years of programming -- and that info is also just about as hard to get to. There must be a better answer.

The MS tech info site is a good start, but they only tell you what they want you to know. Not much scurrilous poop there. Here's one of my peeves: In older Win OSs, I habitually used DownArrow to redo the last command or bring it up for editing. Now, I get something from the past that some MS programmer thought I would like. I've heard there are ways around that, but I have not found any more than that.

A better example is the Unix/Linux HOWTO collection. An excellent body of reference material. Of course, it needs to be kept up to date. A Wiki is good that way.