[Issue 20012] export inside mixin doesn't seem to work

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20012

--- Comment #22 from anonymous4 <dfj1esp02 at sneakemail.com> ---
(In reply to Dennis from comment #20)
> Can you give an example where the proposed behavior would be problematic?
Any callback. E.g.
https://docs.microsoft.com/en-us/previous-versions/windows/desktop/legacy/ms633573%28v=vs.85%29

--