On 2006-maj-20, at 20:26, Lou Vanek wrote: > Actually, by throwing in that "format" (which returns nil) you > short-circuit the canonicalize recursive call and you no longer > get the error because you are no longer calling canonicalize > with nil. Oh, right. Even worse then. -- Luís Oliveira http://student.dei.uc.pt/~lmoliv/