bug#65070: 29.1; (Only on Windows) Both touchpad scroll gestures scroll the screen up and down.

[Eli Zaretskii]

> Date: Sat, 19 Aug 2023 22:46:17 +0900
> From: Kazuhiro Ito <kzhr@d1.dion.ne.jp>
> Cc: corwin@bru.st, hiroya.ebine1@gmail.com, max@mal-richtig.de, 
> 65070@debbugs.gnu.org
> 
> > Can you show the entire set of definitions of the mouse wheel (and of
> > the touchpad, if it has a separate set of settings)?  I'm particularly
> > interested in the value of "how much to scroll for each wheel click".
> > But other settings could also be relevant.
> 
> I don't change settings from default.  In vertical
> scrolling, "The following number of lines at a time" is selected and
> its value is 3.  In horizontally scrolling, value is 3.

Thanks, that value of 3 explains why you see LINES = 3 when
mwheel-coalesce-scroll-events is non-nil.  In that case, we collect
scroll events until they indicate the user wants to scroll enough for
a single wheel click.