#! /bin/sh -e
# read list of scancodes, convert hex to decimal and
# append to the atkbd force_release sysfs attribute
# $1 sysfs devpath for serioX
# $2 file with scancode list (hex or dec)

case "$2" in
        /*) scf="$2" ;;
        *)  scf="/usr/lib/udev/keymaps/force-release/$2" ;;
esac

read attr <"/sys/$1/force_release"
while read scancode dummy; do
        case "$scancode" in
                \#*) ;;
                *)
                        scancode=$(($scancode))
                        attr="$attr${attr:+,}$scancode"
                        ;;
        esac
done <"$scf"
echo "$attr" >"/sys/$1/force_release"