Re: Converting between Shift-JIS and Unicode

From: Rick McGowan (
Date: Thu Apr 01 2004 - 18:01:03 EST

  • Next message: Tom Emerson: "Re: Converting between Shift-JIS and Unicode"

    Rick Cameron asked...

    > It appears that Unihan.txt does not include mappings to Shift-JIS,

    Right. It includes JIS mappings (for the Han portions of JIS).

    > and that the only file on that contains mappings between
    > Shift-JIS and Unicode is in the 'obsolete' section.

    Please read the caveats there before using those. The obsolete mappings
    are totally unsupported. Use at your own risk.

    > Did UTC decide it no longer wanted to provide an official mapping table?
    > If so, why?

    A long long time ago we decided to drop support for most mappings. There
    are many reasons, not least of which is that some of them are moving
    targets, and we don't have resources to support them. For "Shift JIS" there
    are many problems because there isn't just one "Shift JIS"; each vendor
    has their own flavor. The vendors should track their own mappings to
    Unicode, where they differ from JIS.

    The *VENDOR* mappings on the Unicode site are supplied by various vendors,
    and one of the MS mappings will get you the MS variety of Shift-JIS. Note
    that these are not supplied by Unicode, Inc, but by the vendors to us, so
    it may take a while to get an answer, but... If you have problems with one
    of these vendor mappings on the Unicode site, you can discuss it here, or
    fill out our error Reporting Form.

    For Shift-JIS in particular, please do read the caveats and look through
    the archives of this list. There are several known mapping anomalies.


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