bug#33442: 26.1.90; Cairo side-by-side windows scrolling fix should be cherry-picked

[Eli Zaretskii]

> Cc: ari.roponen@gmail.com, rpluim@gmail.com, 33442@debbugs.gnu.org
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Sat, 8 Dec 2018 15:03:12 +0200
> 
> On 08.12.2018 13:15, Eli Zaretskii wrote:
> 
> >> https://debbugs.gnu.org/cgi/bugreport.cgi?bug=33442#47
> > 
> > That was about scaling, no?
> 
> In part it was about "so what if the scaling is broken".
> 
> > Why is side-by-side scrolling important enough to get it in emacs-26?
> 
> You mean why 'C-x 3 C-v C-v C-v' should work? Seems like a basic 
> functionality.

Yes, and it works on master.  And never worked before since the code
was written.  I was asking why it has to be on emacs-26, and hoped for
responses that take the pros and cons into consideration and show how
the pros win over cons.