[trigger.pl] on/off switch

Guys, could someone add on and off functionality to trigger.pl, so it's possible to disable the script by calling a trigger from itself? I've been using "-command 'script unload trigger'" for that, but it's not possible anymore with the newer versions of perl, it crashes the whole irssi with segfault. So the trigger on/off [enable/disable] switch would be priceless.