On Tue, 27 Aug 2019 04:56:35 +0000 Peter Constable via Unicode <unicode@unicode.org> wrote:
> The script _is_ related to Thai script, but I’m not sure I would say > it has “the same origin as that of Thai language/script used in > Thailand”, as that is too simplistic a view of the historic > connections: it suggests that Thai script and Tai Viet developed > directly from the same precursor, which isn’t really accurate. Can you elaborate on that? There seems to be a chasm when we reach back beyond the Sukhothai script, which embodies a failed reform. (There seems to be evidence that the writing system is not a 19th century fake - motive and opportunity had seemed available.) Incidentally, is there a consensus view on whether the Sukhothai script is mostly encoded, and if so, in which Unicode script(s)? What is true is that both Thai and Tai Viet use consonants to record the difference between two sets of three tones (though later mergers and splits can result in 3 + 3 = 5 or 3 + 3 = 7 = 6 = 5); this seems to be a register difference as in Cham and still in a few Khmer dialects, going back to an ancient voicing difference. @Eli: Ideally, you need to check that default font and language are consistent. There are some regional differences which make it necessary to calibrate the writing system, and one word may not suffice. Richard.