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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Emacs scrolling past the end of buffer
Date: Sun, 12 Feb 2012 18:45:40 +0200
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To: Deniz Dogan <deniz@dogan.se>
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> Date: Sun, 12 Feb 2012 17:37:08 +0100
> From: Deniz Dogan <deniz@dogan.se>
> 
> > But then it sometimes happen that you see past the end of the buffer
> > when scrolling (the horror!). I'd rather have excessive CPU consumption.
> >
> 
> What if we combine this with a function in `window-scroll-functions'?

Please make sure that no code that runs off `window-scroll-functions'
tries to affect the display.  Functions run by that hook should treat
the display as "read-only".