There's a bug report that came in complaining about the absence of a certain functionality which we don't support. (The user doesn't realize that's what they're complaining about, but that's what the complaint turns out to be.) So I figured I'd go ahead and add the functionality, because the bug got assigned to me and it's not an unreasonable request.

And after a day of hacking the change in and rearranging code, it almost works. But for some reason, it's not calculating one time period that I'd expect it to calculate, based on the various function calls that I've coded up. When I recalculate the file again, the calculation gets done correctly, including the recalcitrant time period.

So I'm into one of those interesting behavioral things.

I just love working on a system that has behaviors. Even if I did put most of them in myself.