template Test(alias T){
  static if(is(T == TI!TP, alias TI, TP)){
    enum Test=true;
  }
  else{
    enum Test=false;
  }
}

struct A(T){}
void foo(T)(T a){}

void main(){
  static assert(Test!(A!double));
  static assert(!Test!(foo!double)); //why is Test false?
}

This is blocking my pull request to make fullyQualifiedName/GetTemplateParent/GetTemplateArguments work on everything: right now it fails on templated functions.