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Re: List of Japanese Shift_JIS characters which are not supported in Unicode

From: KUROSAKA Teruhiko <kuro@bhlab.com>
Date: Mon, 11 Oct 2004 13:31:08 -0700
Message-ID: <416AED8C.3090403@bhlab.com>
To: souravm <SOURAVM@infosys.com>
CC: www-international@w3.org, unicode@unicode.org


> Is there anywhere an exhaustive list of Japanese characters (especially 
> Shift_JIS characters) which are not supported in Unicode ?

I'm not 100% sure but I think all the characters in Shift_JIS,
being part of the national code set, are supported by Unicode.
But there are things you need to be careful about.

The mapping between Shift_JIS and Unicode defer platform to
platform.  This cuaes an interoperability problem.  See:


If you mean Microsoft extension to Shift_JIS, code page 932,
rather than Shift_JIS proper as defined as part of JIS X 0208,
then there is a round-trip conversion issue because
code page 932 includes many duplicated characters in its
extension areas.  This paper summarizes this issue:


There aren't a perfect solution for these two issues.
You'd have to decide what to do depending on the
needs of specific applications.

KUROSAKA ("Kuro") Teruhiko, San Francisco, California, USA
Internationalization Consultant
Received on Monday, 11 October 2004 20:31:25 UTC

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