bug#32848: 26.1; follow-mode cursor move breaks with frame-resize-pixelwise

[Eli Zaretskii]

> Date: Sun, 30 Sep 2018 08:30:56 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 32848@debbugs.gnu.org, andlind@gmail.com, darkfeline@felesatra.moe
> 
> > OK, let's do it!  What arguments will such a function get?  I think a
> > single argument, a window, would be appropriate.  The function would then
> > return either nil (for most windows) or non-nil (for a "right most"
> > window).
> 
> Agreed.

Now done on the master branch.