WITH_GECKO for system with firefox3(5)?

[Lowell Gilbert]

Lowell Gilbert <freebsd-ports-local at be-well.ilk.org> writes:

> Andriy Gapon <avg at icyb.net.ua> writes:
>
>> It seems that WITH_GECKO=firefox implies firefox2 and there is no firefox3 option.
>> So what should I use here? libxul?
>
> The Makefile implies that
> USE_GECKO= firefox3<->firefox
> may be what you want.

But that doesn't work.
There seems to be work in progress, but I don't know more.