Yeah, but if you're writing a parser for use by others, you have to implement both, even if it's "rarely" used. Or some intern somewhere will have a bad day aft

Yeah, but if you're writing a parser for use by others, you have to implement both, even if it's "rarely" used. Or some intern somewhere will have a bad day after getting tasked with "just add this value here, it'll be an easy starter project." :)