Re: Comment on PRI 98: IVD Adobe-Japan1 (pt.2)

From: Andrew West (
Date: Thu Mar 22 2007 - 08:52:18 CST

  • Next message: "Re: Comment on PRI 98: IVD Adobe-Japan1 (pt.2)"

    On 21/03/07, <> wrote:
    > In IVD Adobe-Japan1 many codepoints with just one glyph are included,
    > which since adobe is the first to registar a collection makes sense to
    > me.

    I'm not at all convinced it makes any sense to define 12,040 variation
    sequences for characters that do not have any glyph variants (i.e.
    12,040 variation sequences where the glyph defined by <U+XXXX,
    U+E0100> is the same or almost the same as the representative glyph
    for U+XXXX, and there are no other variation sequences defined for

    The reasons given for this bloat of variation sequences are:

    1) For the convenience of Adobe -- so that all Adobe Kanji can be
    "uniquely and explicitly identified without referencing their default
    (IVS-less) encoding" (why? -- maybe it would be better to encode a NO
    VARIANT character that could be applied to any character without need
    for registration or a defined variation sequence)

    2) For the sake of forward compatibility -- "because kanji may be
    added in future Adobe-Japan1 Supplements that may be variants of such
    kanji" (we could cross that bridge when we come to it)

    I'm not convinced that either or both of these reasons necessitate the
    encoding of 12,040 redundant variation sequences. It may be convenient
    for Adobe, but I strongly doubt that it will be in Unicode's best


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