Re: Unicode 4.0 and ISO10646-2003

From: Asmus Freytag (
Date: Thu Apr 22 2004 - 15:41:02 EDT

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    At 10:44 AM 4/22/2004, Frank Yung-Fong Tang wrote:
    >I saw the announcment of publishing
    >" ISO/IEC 10646: 2003, Information technology --
    > Universal Multiple-Octet Coded Character Set (UCS)"
    > From
    > <>
    >I expect there are no difference from Unicode 4.0, am I right?

    In you will find this

    Unicode 4.0
    The Unicode Standard, Version 4.0, is synchronized with the third version
    of ISO/IEC 10646. The third version of ISO/IEC 10646 is the result of the
    merger of the second edition of Part 1 (ISO/IEC 10646-1:2000) with the
    first edition of Part 2 (ISO/IEC 10646-2:2001) into a single publication.
    The third version incorporates the published amendments to
    10646-1 and 10646-2:
    Amd. 1 (to part 1): Mathematical symbols and other characters
    Amd. 2 (to part 1): Limbu, Tai Le, Yijing, and other characters
    Amd. 1 (to part 2): Aegean, Ugaritic, and other characters
    The third version of 10646 also contains all the Editorial Corrigenda to date.
    The synchronization of The Unicode Standard, Version 4.0, with the third
    version of ISO/IEC 10646 means that the repertoire, encoding, and names of
    all characters are identical between the two standards at those version
    levels, and that all other material from the amendments to 10646 that have
    a bearing on the text of the Unicode Standard have been
    taken into account in the revision of the Unicode Standard...

    There have been no changes in 10646 between the time Unicode 4.0 was
    released and the publication of ISO/IEC 10646:2003 that would make the
    above statement incorrect.

    However, the two standards are not entirely identical in glyphs. In
    particular, the glyph for 21E45 in 10646 was modified from the 2001 edition
    of ISO/IEC 10646-2, but that modification is incorrect and will be
    retracted. There are also some Han character Errata for Version 4.0 which
    have been fixed in 10646 but not yet in the Unicode code charts (however,
    they are listed at


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