In fairness to Christoph, his prototype is primarily aimed at solving the Unihan/Arabic font selection problem, which is a legitimate goal, and only incidentally about laying out compound monolingual or multilingual labels. I quibble with the notion that one goal is inherently more worthy than the other, and especially with a cold calculation based on population, but every software project is entitled to its own priorities. Certainly it’s good to finally choose a Chinese font for Chinese and a Nastaliq font for Urdu, but I don’t see it as inextricably tied to other labeling issues.
For Americana, selecting a font for the label has been slightly less problematic than for a statically rendered style. A combination of happy accidents results in the style automatically selecting not only the user’s preferred language but also, for CJK only, their preferred font in their preferred language. Consequently, the delimiter issue has been more of a focus, but there’s lots of room for improvement around fonts too.
