Well, you are far better informed in these matters than am I, Jonathan (I am simply a well-meaning amateur) but I do not regard the number of planes required as a major stumbling factor : I am not for one second suggesting that a font encoded in my suggested encoding should have separate glyphs for distinct languages, only that the encoding /itself/ should not conflate (say) Vietnamese "d" with English "d" just because they have a similar shape.
But yes, I do accept that linguistic identity is a sensitive area, and that one should not overlook the difficulty of achieving even short-term consensus regarding such matters. ** Phil. -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
