From: Doug Ewell (dewell@adelphia.net)
Date: Mon May 17 2004 - 21:42:34 CDT
Philippe Verdy <verdy underscore p at wanadoo dot fr> wrote:
> I know that now ISO15924 publishes 4-letter codes for scripts used in
> Bibliographic references and that it contains more scritps than in
> Unicode as ISO-15924 needs separate codes for variants that are
> unified for Unicode encoding.
That's one of the reasons. The other, as you mention later, is that
some scripts that have ISO 15924 codes aren't in Unicode yet.
> I also understand that Unicode defines its own "Hiragana_or_Katakana"
> code that is needed for character classification of a few characters
> (this specific code is not used as script codes for bibliographic
> reference, and that's a good justification for listing the "script"
> name in ISO-15924 between parentheses as this is a technical
> requirement, however ISO-15924 still accepted to encode it under
> N°=412, Code=Hrkt.)
Michael says Hrkt was part of the draft standard before the Unicode
character-classification need became known.
> I also understand that Unicode also needs script IDs for "Common" and
> "Inherit".
> ...
> - Should there exist a "Zwww" code in ISO 15924 for the Unicode
> "Inherited" script ID?
"Inherited" is a concept unique to UAX #24. There is no real need for
such a code in ISO 15924. The private-use code Qaai works fine for
that.
-Doug Ewell
Fullerton, California
http://users.adelphia.net/~dewell/
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