bug#56662: 29.0.50; Funny region highlights when highlight-nonselected-windows is t

[Eli Zaretskii]

> From: Visuwesh <visuweshm@gmail.com>
> Cc: 56662@debbugs.gnu.org,  kevin.legouguec@gmail.com
> Date: Thu, 21 Jul 2022 18:02:32 +0530
> 
> >> I can think of one way this could potentially work is by checking if the
> >> mark was made when window was active so making the mark "window-aware"?
> >> I.e., if two windows A and B show the same buffer and the user typed
> >> C-SPC when in window A, then the region would not show up in window B.
> >> Does this make sense?
> >
> > So what happens if the user then types "C-x o" to switch to B?
> 
> Ideally, nothing.  Only the active window changes but the region
> highlighting before and after should be the same.

But that's a bug: region highlighting should definitely work in a
selected window.

> Here's another question: what about delete-selection-mode when the
> active window is B?

What about it?