Re: Make scroll-{up, down} move point to {start, end} of newly visible text

[Eli Zaretskii]

> From: Emanuel Berg <incal@dataswamp.org>
> Date: Fri, 11 Aug 2023 21:00:14 +0200
> 
> Eli Zaretskii wrote:
> 
> > You can find it in the simple cases like the one you
> > describe, but not in general. For example, if you scroll by
> > N window-fulls , it is usually impossible to know in advance
> > whether the last window will show EOB with empty space
> > after it.
> 
> Only one thing to do then, get the scroll state from C to
> Lisp, then do the check in Lisp, then sometimes make the
> scroll in C ...

You can't.  I tried to explain why.