bug#22404: 25.1.50; Forcing `window-scroll-functions` to run.

[Keith David Bershatsky]

Thank you, Eli, for the detailed explanation in your most recent e-mail -- 
greatly appreciated.

Assuming the correct values are available through Lisp when using the 
`post-redisplay-hook` and assuming that there is no buffer modification 
(attached to that new hook) that moves point or changes font sizes, I am 
unaware of any other prospective problem areas.  The minor-mode in my previous 
e-mail should be sufficient for us to visually see how it works with some basic 
things like scroll-up/down, beginning/end-of-buffer, next/previous-line when at 
the window edges.

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At Tue, 02 Feb 2016 20:43:13 +0200,
Eli Zaretskii wrote:
> 
> 
> I don't understand the "maybe" part.  We are talking about values that
> are easily obtained from any Lisp program, so what are the problems
> you envision?