bug#66398: 29.1; Buggy handling of transparency changes / blur/unblur

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  66398@debbugs.gnu.org
> Date: Mon, 16 Oct 2023 12:44:05 +0800
> 
> Tollef Fog Heen <tfheen@err.no> writes:
> 
> > ]] Po Lu 
> >
> >> Oh, I see, thanks.  Please test the attached patch:
> >
> > With the patch, I am no longer able to reproduce the problem.  Thanks
> > for the help fixing this problem!
> >
> > Regards,
> 
> Thanks.  Eli, is this safe for Emacs 29?

I guess so, thanks.