Hi!
I just added support for '[]' on strings and '{}' to the PR.
Examples :
$string[] = 'a'; // equivalent to : $string[strlen($string)]
$string{} = 'a'; // For consistency
That's probably not a good idea, and certainly is not good for the RFC -
the patch now does two unrelated things.
This is not strictly in the scope of negative offsets. So, if you think
it must be part of a separate RFC, I will remove it.
Yes, I think so. And I also thing it is a bad idea. We already have a
way to add stuff to the string - it's .= operator. Adding another weird
way to do it IMO is not good.