From: John Cowan (firstname.lastname@example.org)
Date: Tue Nov 25 2003 - 12:25:35 EST
Philippe Verdy scripsit:
> The question of Latin letters with two diacritics added in Latin Extension B
> does not seem to respect this constraint, as it is not justifed in the
> Vietnames VISCII standard that already does not contain characters with two
> diacritics, but already composes them with two characters in the limited CCS
I'm not sure what standard you are referring to. There are three standards
for Vietnamese text: VISCII 1.1 (de facto), TCVN 5712-1 (aka VSCII-1),
and TCVN 5712-2 (aka VSCII-2). VISCII provides no combining characters,
fills the C1 space with graphics, and even replaces certain C0 characters
with graphics. 5712-1 provides combining characters and fills the C1
space with graphics. 5712-2 provides combining characters and leaves
both C0 and C1 clear of graphics (and so is ISO 2022-compatible). But
all of them provide at least some characters with double diacritics.
> I don't know why even ISO10646 would have needed them, unless there's some
> Vietnamese DBCS standard that allows representing in a 94x94 matrix all
> letters with two diacritics as well as Han ideographs used in Vietnamese.
I very much doubt that any such encoding ever existed.
-- What is the sound of Perl? Is it not the John Cowan sound of a [Ww]all that people have stopped email@example.com banging their head against? --Larry http://www.ccil.org/~cowan
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