--- Comment #18 from Jacob Carlborg <> 2011-07-22 12:02:51 PDT ---
> This is not only about variadic arguments, sorry for being confusing. It is
> about the combinatorial explosion when overloading rules meet automatic
> expansion. Again, please consider this example:
> fun(t1, t2, t3, t4);
> and consider:
> * fun may have an arbitrary number of overloads
> * Some or all of t1 through t4 may be tuples, some also including tuples of
> tuples
> The fact that there exists an algorithm to find an expansion (albeit in
> potentially a long time) is little solace when we consider the complexity
> inflicted on the human reader.

Ok, I can see now that it can become quite complicated. Specially with nested

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