GNU bug report logs - #42406
Mouse-wheel scrolling can be flickering

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From: Alan Third <alan <at> idiocy.org>
To: martin rudalics <rudalics <at> gmx.at>
Cc: Eli Zaretskii <eliz <at> gnu.org>, konrad.podczeck <at> univie.ac.at, 42406 <at> debbugs.gnu.org
Subject: bug#42406: Mouse-wheel scrolling can be flickering
Date: Wed, 16 Dec 2020 21:35:36 +0000

On Wed, Dec 16, 2020 at 09:46:48AM +0100, martin rudalics wrote:
> >> So if Konrad sets the 'internal-border-width' frame parameter to 0 the
> >> slowdown should not happen.  Right?
> >
> > The cursor is still redrawn, so it may make no difference.
> 
> Because of the update mode lines flag?

I believe so, yes. When it's set, as far as I can see from looking at
the code we call clear_under_internal_border and update_frame, which
ultimately causes the cursor to be redrawn.

-- 
Alan Third

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