[Issue 19530] New proposed syntax for mixins

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19530

--- Comment #3 from Victor Porton <porton at narod.ru> ---
This does not solve my problem.

I want the possibility to _selectively_ (at my disposal, that is both or only A
or only B) add mixins A or B without the necessity to pass template parameters
two times. Your example does not solve this problem.

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