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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: 33% speed up in CC Mode scrolling.
Date: Mon, 27 Jun 2016 19:28:24 +0300
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References: <20160615222015.GA4813@acm.fritz.box> <5770C84E.30208@gmx.at>
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To: martin rudalics <rudalics@gmx.at>
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In-reply-to: <5770C84E.30208@gmx.at> (message from martin rudalics on Mon, 27
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> Date: Mon, 27 Jun 2016 08:31:42 +0200
> From: martin rudalics <rudalics@gmx.at>
> 
> This change has hardly any effect here.  Scrolling xdisp.c with a '-O0
> -g2 -gdwarf-2' build run via emacs -Q is still virtually impossible.

What exactly does "scrolling xdisp.c [...] is still virtually
impossible" mean?  How do you scroll?