From: John H. Jenkins (email@example.com)
Date: Sun Nov 04 2007 - 15:33:17 CST
I swore I wasn't going to post anything more to the threads on this
topic, but since James is a rational and reasonable human being, I'll
break my vow.
¦b Nov 4, 2007 12:23 AM ®É¡A James Kass ¼g¨ì¡G
> If IDS use would accomodate roughly 80% of CJK characters,
> and if Unicode allows applications to form glyphs for IDSequences,
> and if users need to represent as-yet-unencoded or never-to-be-
> encoded "characters" right now in plain text, is there a problem
> in using IDSequences to do so?
Yes. There are several problems. A FAQ has just been added to the
Unicode Web site to call attention to them <http://www.unicode.org/faq/han_cjk.html#24
1) IDSs are inadequate to provide acceptable rendering;
2) Normalization of IDSs would be necessary for operations such as
searching and sorting and is an absolute nightmare; and
3) It is generally felt that making up *new* ideographs is a Bad Thing
and ought not be encouraged.
I won't say that the UTC or WG2 will absolutely oppose any and all
compositional models for Han, *but* the bar is very high indeed. This
approach has been bruited in Unicode pretty much since the beginning,
and the UTC is well aware of the practical problems involved. A
compositional model won't fly in the UTC unless these problems are
addressed; for all practical intents and purposes, the UTC would
require an actual implementation, at the very least.
John H. Jenkins
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