So such a variation selector would have to be used in front of every individual character? Or could it be applied across a substring, similar to how the text di

So such a variation selector would have to be used in front of every individual character? Or could it be applied across a substring, similar to how the text direction is flipped? Either way this seems to be the most painless "fix" for this given the current situation. Setting a language for the whole text fails as soon as the languages are mixed.