new operator overloading buggy?

[Trass3r]

Guess it's better to post this here. Are these some bugs or is there another problem?

the following code strangely yields:
dsfml\system\vector2.d(47): Error: variable dsfml.system.vector2.Vector2!(float).Vector2.op only parameters or foreach declarations can be ref

/// element-wise operations, +, -, 
ref Vector2 opBinary(string op)(ref Vector2 v)
{
        mixin("return Vector2!(T)( cast(T)(x " ~ op ~ " v.x), cast(T)(y " ~ op ~ " v.y) );");
}

Removing ref from the return type makes it compile.


Furthermore the assignment operator seems to be rewritten as opBinary instead of opAssign as the docs state:

Vector2f        _pos = Vector2f(0.f, 0.f);
yields:
Error: template instance opBinary!("=") matches more than one template declaration


This also shows another problem. It can't distinguish between these two:
Vector2 opBinary(string op)(ref Vector2 v)
if (op != "*")
{
        mixin("return Vector2!(T)( cast(T)(x " ~ op ~ " v.x), cast(T)(y " ~ op ~ " v.y) );");
}

Vector2 opBinary(string op)(int i)
{
        mixin("return Vector2!(T) ( cast(T)(x " ~ op ~ " i), cast(T)(y " ~ op ~ " i) );");
}

even though vec1 + vec2 resp. vec + 5 is unambiguous.