Comment 18 for bug 308397

(In reply to comment #7)
> I would expect this to take a patch like in bug 446527 to really work
> independent of user settings.
>
> http://mxr.mozilla.org/mozilla-central/source/toolkit/components/urlformatter/src/nsURLFormatter.js
> is worth a look, too. Sadly, one can't pass in extra variables. Not sure if
> some of the blocklist variables would be worth adding.

Ideally we should just get bug 430235 fixed