bug#51210: Customizable other-window-for-scrolling

[Eli Zaretskii]

> From: <jakanakaevangeli@chiru.no>
> Date: Thu, 14 Oct 2021 19:37:20 +0200
> 
> Juri Linkov <juri@linkov.net> writes:
> 
> > Often scroll-other-window uses a wrong window for scrolling
> > when there are more than 2 windows on the frame.
> >
> > Maybe like there is a variable other-window-scroll-buffer,
> > it would be nice to add a new user option
> > other-window-for-scrolling-function that will return
> > a window for scrolling.
> 
> +1. I often have multiple frames with only one window, so it would be
> useful to customize this proposed variable to a function that returns a
> window on a different frame if there is only one window on the current
> frame.

Wouldn't it be easier to add a new command scroll-other-frame?