Initially I thought this might be treated like Cyrillic or Arabic were performing with Latin. But I guess this would be difficult to access directly through the keyboard, given the existing lack of keyboard support. But this is only conjecture. I can not imagine how the final form.
So far I use a practical way to put the glyphs of scripts in a Latin position that can be accessed directly via keyboard. Although helpful, but I know this is a mistake. The script should remain on the codepoint which has been commissioned by the unicode.