Tags: patch

Following up on the `xt-mouse.el` patch (bug#68698), I now propose we do
the same for those `mouse-4/5/6/7` events generated by old-style X11 input.

IIUC Po Lu wasn't favorable to the idea, but maybe seeing the code
will make a convert?

Beside that, the patch has 2 remaining issues:
- Lack of corresponding updates to `etc/NEWS` and `doc/lispref/commands.texi`.
- Lack of testing for the left/right remapping.  This is *really*
  necessary because even after (re)reading the various parts of the code
  that handle horizontal scrolling, I'm still very much unsure if I got
  the direction right[left?], so if you have a mouse with a horizontal wheel,
  please compare the `wheel-left/right` events generated with and
  without building `--without-xinput2`.


        Stefan

 In GNU Emacs 30.0.50 (build 2, x86_64-pc-linux-gnu, X toolkit, cairo
 version 1.16.0, Xaw3d scroll bars) of 2024-01-25 built on pastel
Repository revision: 5945fab9af0b52cc55f06b2c7e911d51e34a9cdf
Repository branch: work
Windowing system distributor 'The X.Org Foundation', version 11.0.12101007
System Description: Debian GNU/Linux 12 (bookworm)

Configured using:
 'configure -C --enable-checking --enable-check-lisp-object-type --with-modules --with-cairo --with-tiff=ifavailable
 'CFLAGS=-Wall -g3 -Og -Wno-pointer-sign' --without-native-compilation
 PKG_CONFIG_PATH=/home/monnier/lib/pkgconfig'