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

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Konrad Podczeck <konrad.podczeck <at> univie.ac.at>
Cc: alan <at> idiocy.org, 42406 <at> debbugs.gnu.org
Subject: bug#42406: Mouse-wheel scrolling can be flickering
Date: Mon, 14 Dec 2020 23:01:45 +0200

> From: Konrad Podczeck <konrad.podczeck <at> univie.ac.at>
> Date: Mon, 14 Dec 2020 21:48:36 +0100
> Cc: Alan Third <alan <at> idiocy.org>,
>  42406 <at> debbugs.gnu.org
> 
> > As explained in my other message, avoiding to call
> > wset_update_mode_line will cause subtle redisplay bugs.
>  
> Which bug could I encounter, for example?

Mode lines of non-selected windows could fail to update when they
should (e.g., if the buffer displayed in a non-selected window
changes), tool-bar buttons that change their appearance depending on
the Emacs state (e.g., the "Copy" button becomes sensitive only when
there's region) could fail to react to state changes, menu-bar items
that depend on modes and global state could fail to update.  That sort
of bugs.

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