Po Lu <luangruo@yahoo.com> writes:

> Because other systems (such as GDK) have different methods of reporting
> scroll deltas.  While it makes sense in the context of the XInput 2 code
> to report them one at a time, it does not in the context of GDK, as it
> reports both deltas to Emacs at the same time.
>
> Which means the pure GTK port will report both delta-y and delta-x at
> the same time.
>
> Thanks.

And here's a new version of the patch with the fixes to documentation,
and an extra option to prevent motion events from being sent too
rapidly.