Capturing __FILE__ and __LINE in a variadic templated function

[Nordlöw via Digitalmars-d-learn]

On Sunday, 1 November 2015 at 23:36:15 UTC, anonymous wrote:
> On 01.11.2015 23:49, Adam D. Ruppe wrote:
>> Yeah, just make the other args normal runtime instead of 
>> template:
>
> Or make it two nested templates:
>
> template show(T...)
> {
>     void show(string file = __FILE__, uint line = __LINE__,
>         string fun = __FUNCTION__)()
>     {
>         ...
>     }
> }

Doesn't work.

I need `T` to be an alias in order for .stringof to work.

How do I specify a variadic template argument alias list of 
aliases?