Should I file the following as a bug?
import std.traits;
void foo(int) { }
void bar(ref int) { }
void main()
{
pragma(msg, ParameterTypeTuple!foo); // (int)
pragma(msg, ParameterTypeTuple!bar); // (ref int)
static assert(is(ParameterTypeTuple!foo ==
ParameterTypeTuple!bar)); // pass
}