Exactly. For an example of doing it wrong, check out D. D is a great language (I'm reading The D programming language and it became one of my favorite books), b

Exactly. For an example of doing it wrong, check out D. D is a great language (I'm reading The D programming language and it became one of my favorite books), but they broke compatibility between D1 and D2 and I am not even sure D2 is compatible with itself. And the compiler support is not yet mature. GDC has missed inclusion into GCC 4.8, while Go went into GCC 4.7, which makes using Go possible on a number of platforms and configurations.