Why is this?

[Manu via Digitalmars-d]

I have weird thing:

template E(F){
    enum E {
        K = F(1)
    }
}

struct S(F = float, alias e_ = E!double.K) {}
S!float x; // Error: E!double.K is used as a type

alias T = E!double.K;
struct S2(F = float, alias e_ = T) {}
S2!float y; // alias makes it okay...

struct S3(F = float, alias e_ = (E!double.K)) {}
S3!float z; // just putting parens make it okay as well... wat!?


This can't be right... right?

No problem if E is not a template.