[Issue 5710] cannot use delegates as parameters to non-global template

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=5710

--- Comment #40 from Sobirari Muhomori <dfj1esp02 at sneakemail.com> ---
This is exactly my point: don't make it a different thing. The function needs
two contexts, they can be nested, backend and frontend can construct and access
such nested contexts, no need to reimplement it in a different way.

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