My first thought is, that code should be plain ascii and preferably english. But ultimately it's fine and nice that the language supports Unicode. It should be

My first thought is, that code should be plain ascii and preferably english. But ultimately it's fine and nice that the language supports Unicode. It should be a matter of code guidelines and of the particular project setting the preferred way beforehand. It should not be a decision by people implementing the language but not all projects using that language.