The presence of a language feature is already signalled via the __cplusplus define, so it is already done that way. I think C++ is very pragmatic in the way it

The presence of a language feature is already signalled via the __cplusplus define, so it is already done that way. I think C++ is very pragmatic in the way it has been done so far, but I am not looking forward to the new __* keywords for resumable functions. I think it's fair to steal the "await" and "yield" keywords back from programmers so my eyes don't bleed. I've already been conditioned to treat __whatever as a platform-specific thing to avoid in my code.