It might be that the implication of that is the zero length result is used to "detect" if the lookahead contitional didn't find the searched pattern. Since zero length captures have such a role in lookahead conditionals, they might not be available to just return that empty string as a consequence. Don't know if that makes sense how I put it, but that's my suspicion.And yeah... I saw the alert in the manual. It simply states the fact you cant.
Statistics: Posted by Yincognito — Yesterday, 9:25 pm