extern(C) and name mangling

[Dave P.]

I can’t find this in the spec, but from experimentation it seems 
like extern(C) only affects name mangling of functions at the top 
level scope. Thus extern(C) function templates would be mangled 
differently, but still use the C calling convention. Is this 
right?  I want to pass some templated functions as function 
pointers to some C code and wanted to confirm that would work 
(and that different versions would be mangled differently).

Also, is there any way to say you want the C calling convention, 
but don’t want C name mangling for top level functions?