....You may be right, Philippe. This would all be rather complex to implement in a word processor when a user selects different diacritics and gives them all different colours. But it is implementable.
The glue seems good in apparence but much too complex to implement in Unicode. I do think that specific occurences of compelx styles must be
handled with a stylesheet, where any given grapheme cluster is applied a composite style as a whole.
...
But all this is out of scope of Unicode. Such things should be requested to the W3C as an enhancement proposal in CSS to allow
styling only small fragments of text found in text elements
(with fragments initially specified as characters or strings of
characters, or possibly as regular expressions to match items
for which complex style is needed)...
Of course there is an even simpler way to provide the glue I was talking about. W3C simply needs to relax the rule forbidding combining marks at the start of a string (and interpret the one precomposed character with ">" as base as if it were decomposed, as I suggested before), and, remembering that use of NFC is a strong recommendation rather than a requirement, not insist on NFC in such cases. Then nothing needs to be added to Unicode.
-- Peter Kirk [EMAIL PROTECTED] (personal) [EMAIL PROTECTED] (work) http://www.qaya.org/
