[RFC][VOTE] Generalize support of negative string offsets

Hi, (sorry, posting again to force new thread) Starting vote about : https://wiki.php.net/rfc/negative-string-offsets Voting period ends in 2 weeks : Monday, March 7th 00:00 UTC. As, during the discussion, we talked about many related but off-topic subjects, please remember that the subjects below remain *out of scope of this RFC* and deserve their own thread : - Support '{}/[]' (empty braces) on string offset assignments, - Reserve/recommand '{}' syntax for string offsets and '[]' for arrays, - Auto-conversion of empty string to array on string offset assignment, - the same with true/false, - support '++/--' on string offsets... If you want to go further discussing one of these subjects, please create a new thread for this. Regards François