bug#58412: 29.0.50; --with-x-toolkit=athena causes too small emacs window

[Po Lu]

Uwe Brauer <oub@mat.ucm.es> writes:

>>>> "PL" == Po Lu <luangruo@yahoo.com> writes:
>
>> Uwe Brauer <oub@mat.ucm.es> writes:
>>> Ok, sigh, I was afraid of that, but fair enough, and currently master
>>> has some nice new exiting features I would like to test.
>
>> BTW, screwing around with the Kwin in Trinity did not result in the bug
>> for me, so it would be nice if you could bisect for that as well.
>
> I found it, *you* are the culprit 😉
>
> It is commit  136495f178cc
>
> * commit 136495f178ccd36b23ffc347fe2b6680fd689e34
> │  Author: Po Lu <luangruo@yahoo.com>
> │  Date: Wed, 31 Aug 2022 10:17:20 +0800
> │
> │  Gently nudge Xt into always setting size hints
> │
> │  * src/widget.c (update_wm_hints): Force a resource to change
> │  every time this function is called.  (bug#57475)
> │  (EmacsFrameInitialize): Initialize new field.
> │  * src/widgetprv.h (EmacsFramePart): New field `size_switch'.
> │  * src/xterm.c (x_wm_set_size_hint): Don't change flags if flags
> │  is 0.
>
> That causes the problem with and without athena. So it is responsible
> for both problems.

Did you test with GTK during the bisection as well?  That code only
affects the X toolkit builds.

Also, what happens if you remove the change to widget.c?