Sorry Phil, going to correct you a little bit here ;-) It actually wasn't ported over. It was written by Alfie and I did a big rewrite on it before committing.
Right you are, but Alfie based this almost directly on CI. You recoded some of it, but the initial purpose and feeling of the class remains as essentially a copy of the CodeIniter Helpers. The sort of thing that is so similar it was just easier to call a port. :)