Re: Variations of mapping from Japanese encodings to Unicode

[Martin Duerst <duerst@w3.org>]

Hello Makoto,

I have tried to look at the .xml files you cited.
But I got validation errors with various tools.
E.g. in http://www.w3.org/TR/japanese-xml/x-sjis-cp932.xml,
XMLSpy complains that there is no ID on characterMapping
(required according to
http://www.unicode.org/unicode/reports/tr22/CharacterMapping.dtd).
My guess is that the problem is due to some updates in
the CharacterMapping DTD. I'm coping Mark to check.

I suggest that you investigate the problems. If necessary,
you can always resubmit the XML Japanese Profile Note
to fix errors.

Regards,   Martin.



At 00:33 01/08/30 +0900, MURATA Makoto wrote:
>Unfortunately, different systems use different mapping tables from
>Shift-JIS to Unicode.  The same thing applies to ISO-2022-JP and
>Japanese EUC.  Such mapping tables are very unlikely to disappear
>soon.  More about this, see XML Japanese Profile at:
>
>        http://www.w3.org/TR/japanese-xml
>
>Such unstable mapping spoils interoperatibility and is fatal
>especially for digital signature.  Although we do not have any really
>good solutions, we can assign different charset names to different
>mapping tables.
>
>For this reason, I am going to propose quite a few charsets for
>Shift-JIS, Japanese EUC, and ISO-2022-JP.  They are new charsets
>rather than aliases of existing charsets (i.e., shift_jis, euc-jp,
>iso-2022-jp), which does not have agreed mapping tables.
>
>Cheers,
>
>MURATA Makoto