It's in need of some slight attention right now. The main problem is that it always prefers munger entries that were enumerated first, which equates to added first in Spidermonkey (Mozilla's JS Engine).
I filed the bug on it a while ago now, but it recently came to my attention that Wikipedia actually had a script that broke stuff because of it. I've corrected the script with version 1.2 so it doesn't completely break normal links, but the real bug still stands.