Nevermind.
The answer is "EwmhBaseStruts", and the behavior I'm seeing is because
I recently increased the size of all my buttons. So there was still a
reserved area -- it just wasn't big enough.
BTW, I'm amused that I found the answer by asking ChatGPT:
> I use fvwm as my window manager. How do I tell it that some areas
> of the screen are off-limits for window placement? I use
> "CleverPlacement".
It gave a perfectly reasonable answer, and I knew right where to look.
paul
I wrote:
> I feel like I used to know how to do this, or maybe I didn't, and it
> worked properly in the past and I've changed something unknowingly.
>
> How do I tell CleverPlacement that some areas of the screen are off
> limits? As things are, windows often end up on top of my FvwmButtons,
> and my launcher buttons.
>
> (fvwm 2.6.8)
>
> paul
> =----------------------
> paul fox, [email protected] (arlington, ma, where it's 43.0 degrees)
>
>
=----------------------
paul fox, [email protected] (arlington, ma, where it's 43.4 degrees)