bug#55684: 29.0.50; wrong-type-argument in minibuffer-only frames

[Eli Zaretskii]

> Date: Sat, 28 May 2022 13:09:17 +0000
> Cc: monnier@iro.umontreal.ca, rudalics@gmx.at, 55684@debbugs.gnu.org,
>   acm@muc.de
> From: Alan Mackenzie <acm@muc.de>
> 
> > It starts with a list of live windows, that's true, but who will
> > guarantee that while it's processing some window cannot be deleted?
> > WINDOW_LIVE_P is not expensive enough to make such assumptions.
> 
> That makes sense.
> 
> > In any case, even if we are sure a window returned by get-mru-window
> > I'd prefer to use WINDOWP instead of NILP here.
> 
> I've committed Stefan's patch, amended with WINDOW_LIVE_P and an extra
> comment to the emacs-28 branch.

Thanks.