GNU bug report logs - #66655
29.1; Clicking buttons sometimes doesn't work

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Message #31 received at 66655 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: tomasralph2000 <at> gmail.com, 66655 <at> debbugs.gnu.org
Subject: Re: bug#66655: 29.1; Clicking buttons sometimes doesn't work
Date: Mon, 23 Oct 2023 18:36:11 -0400

> Yes, that's the logic here.  Technically, it happens because clicking
> the mouse emits 2 events: down-mouse-1 followed by another one caused
> by releasing the mouse button, and the first event could cause
> redisplay (as happens in this case) because it generally moves point
> to the location of the click.

So maybe, in order to upgrade an `up` to a `drag` we should check that:
- the end (buffer) position is different.
- and the mouse has actually moved.
Currently we detect a mouse-has-moved when the start and end (screen)
position of the mouse are different, but maybe we should additionally
set a flag when the mouse is moved, so that it's still considered as
"moved" if the mouse returns to its initial (screen) position?


        Stefan

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