Variable: mouse-wheel-down-alternate-event
mouse-wheel-down-alternate-event is a customizable variable defined in
mwheel.el.gz.
Value
mouse-4
Documentation
Alternative wheel down event to consider.
This variable was added, or its default value changed, in Emacs 29.1.
Probably introduced at or before Emacs version 29.1.
Source Code
;; Defined in /usr/src/emacs/lisp/mwheel.el.gz
(defcustom mouse-wheel-down-alternate-event
(if (featurep 'xinput2)
'wheel-up
(unless (featurep 'x)
'mouse-4))
"Alternative wheel down event to consider."
:group 'mouse
:type 'symbol
:version "29.1"
:set 'mouse-wheel-change-button)