bug#63967: 28.2; switch-to-buffer in normal window fails if minibuffer window is active

[Eli Zaretskii]

> Date: Sat, 10 Jun 2023 06:39:41 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: al@petrofsky.org, rudalics@gmx.at, monnier@iro.umontreal.ca, 
>     63967@debbugs.gnu.org
> 
> I see.  Apparently we don't work the same way.  I didn't have time to 
> investigate this issue further after bisecting, but the first thing I 
> would have done is to determine which of the four calls to 
> Fset_frame_selected_window in that changeset is responsible for that bug.

You assume that the only way to change the selected-window on the C
level is by calling Fset_frame_selected_window?  That's false; just
try grepping the C sources for "selected_window =".  And that's even
before you consider the possibilities of indirect setting, when the
actual setting is in Lisp via some proxy.