Re: Combining marks with two letters

From: Kenneth Whistler (
Date: Mon Feb 11 2008 - 16:09:27 CST

  • Next message: Asmus Freytag: "Re: Combining marks with two letters"

    James Kass asked:

    > > In order to prevent this, the user would need to
    > > insert CGJ between the two marks.
    > Kent Karlsson called this an "ugly hack". CGJ is canonical
    > combining class zero and a default ignorable code point.
    > Does this mean that canonical ordering may ignore the
    > CGJ and break the desired mark ordering anyway?

    No. "Default ignorable" decidedly does *not* mean ignorable
    for canonical ordering. Any ccc=0 combining mark, including
    CGJ, makes a difference for canonical equivalence.

    "Default ignorable" has to do with whether, when otherwise
    not supported in rendering, a character should display
    with a visible blort or with nothing at all.


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