Re: [RFC] Treat namespaced names as single token, relax reserved keyword restrictions

On Tue, Jun 16, 2020 at 1:52 AM Nikita Popov <nikita.ppv@gmail.com> wrote: > Hi internals, > > Inspired by the recent discussion on reserved keyword reservation, I'd like > to propose the following RFC: > > https://wiki.php.net/rfc/namespaced_names_as_token > > This RFC makes two related changes: Treat namespaced names as a single > token, which enables use of reserved keywords inside them. And remove > reserved keyword restrictions from various declarations. > > The RFC comes with a small backwards compatibility break related to names > that include whitespace, but will hopefully reduce the backwards > compatibility impact of future reserved keyword additions. > > Regards, > Nikita > The only issue I have with this RFC is this: use Foo as KEYWORD; While this might be _technically_ correct, it is unusable. That is: use Foo as List; class Bar extends List { } // this will not work Given this, I think this specific syntax should be an error, unless I'm missing something? Also, does this mean we can alias to fully namespaced names now? use \My\Foo as \Bar\Foo; class Bat extends \Bar\Foo { } // now actually extends \My\Foo, not \Bar\Foo (no autoload would happen?) - Davey