bug#23587: 24.5; Emacs window clips to half its size in xmonad

[Eli Zaretskii]

> From: Christian Gogolin <register@cgogolin.de>
> Cc: 23587@debbugs.gnu.org
> Date: Fri, 20 May 2016 18:21:15 +0200
> 
> I just found out what is causing the problem:
> 
> In my .xinitrc I am doing the two following exports
> 
> export GDK_SCALE=2
> export GDK_DPI_SCALE=0.5
> 
> to make icons in GTK applications reasonably large on my HiDPI screen.

If that's the problem, I'd definitely urge you to try the latest
pretest, since AFAIK some of these problems are supposed to be solved
there (as part of handling bug#20432 you mention).

> Without these exports, or by starting Emacs explicitly overwriting
> these values
> 
> $ export GDK_SCALE=1; export GDK_DPI_SCALE=1; emacs

Why do you need the "export" parts?  Isn't the following enough?

 $ GDK_SCALE=1 GDK_DPI_SCALE=1 emacs

> I guess that in the long run this behaviour will have to be fixed, for
> now I can live with the workaround above.

I think it might already be fixed, please try the latest pretest, or
build from the emacs-25 branch of the Emacs repository.

In any case, I added to PROBLEMS the description of this and the
workaround.

Thanks.