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

[Eli Zaretskii <eliz@gnu.org>]

> Date: Sat, 10 Jun 2023 19:42:04 +0000
> Cc: Eli Zaretskii <eliz@gnu.org>, al@petrofsky.org, rudalics@gmx.at,
>   63967@debbugs.gnu.org
> From: Alan Mackenzie <acm@muc.de>
> 
> > I understand why we do the `set_window_buffer` and set its start and
> > point, but I can't see why we'd need to select the mini-window:
> > presumably if it needed to be (re)selected that should have been handled
> > by the window-config save&restore, no?
> 
> There was a problem with the restoring of the window configuration
> selecting a window other than the minibuffer; that is in circumstances
> where the minibuffer window should have ended up being selected.
> 
> Fset_window_configuration seems to be the troublesome function in this
> scenario.  As well as setting the window configuration, it also selects
> a window.

Where is that problem and its circumstances described?  Is there some
bug number or a discussion on emacs-devel that you could point to?

> Perhaps we should modify the minibuffer code to note which window should
> be current after the completion or abortion of the minibuffer read
> action.

Isn't that simply "the window which was selected before entering the
minibuffer"?