If libraries use unicode in their internals, it doesn't affect you or me. And I have yet to see in the wild any examples of unicode identifiers that are require

If libraries use unicode in their internals, it doesn't affect you or me. And I have yet to see in the wild any examples of unicode identifiers that are required for use. The closest thing i can think of is the composition operator in Base, though it has a somewhat awkward ascii equivalent. Do you have any example? As far as I know this is strongly discouraged in the community.