bug#43128: Acknowledgement (27.1; DPI change not detected after switching to Emacs 27.1)

[Eli Zaretskii]

> Date: Tue, 25 Oct 2022 23:02:16 +0200
> From: Vincent Bernat <bernat@luffy.cx>
> Cc: mituharu@math.s.chiba-u.ac.jp, 43128@debbugs.gnu.org
> 
> > I'll try to do something, but I have no experience with either Xft or
> > Cairo, so if that's something clever to do, I am likely to fail.
> 
> I was able to build this patch. I did replace XftDefaultSubstitute() by 
> something that looks correct. However, for XftDefaultSet(), it seems 
> there is no mechanism to override the defaults for fontconfig or cairo, 
> so it seems not needed to find a substitute.

Sorry, I don't understand.  Are you saying that the patch you posted
solves the problem for you?  Then what do you mean in the last
sentence above about XftDefaultSet?

Po Lu, can you please review the proposed patch and decide what to do
about this issue?  Or maybe it is already fixed in some other way on
master?

Thanks.