Calling constructor of templated class via cxx-macro

[oschulz]

Would it be possible to support something like this?

@cxx std::vector<int>(42)

[Keno]

@cxx std::vector{int}(42) should theoretically work, but fails right now due to a bug in how it looks up symbols. I can probably fix that.

[oschulz]

That would be handy - thanks!