#!/bin/bash

# enable middle mouse scrolling system wide

# a script that will try those commands for every id# listed in "xinput list" under  Virtual core pointer section
# https://forums.bunsenlabs.org/viewtopic.php?pid=10771#p10771

set -ex

# 2 = middle, 3 = right
button="3"

xinput list | sed -ne 's/^[^ ][^V].*id=\([0-9]*\).*/\1/p' | while read -r id
do
        case "$(xinput list-props "$id")" in
        *"libinput Scroll Method Enabled"*)
        
            xinput set-prop "$id" "libinput Scroll Method Enabled" 0, 0, 1
            # This is button
            xinput set-prop "$id" "libinput Button Scrolling Button" "$button"
            # This is middle mouse. Already 2 by default
                ;;
        esac
done