Re: Why people still want to encode precomposed letters

From: Andrew Cunningham (
Date: Tue Nov 18 2008 - 17:41:21 CST

  • Next message: "Re: Why people still want to encode precomposed letters"

    Actually, insisting on precomposed characters may not make things ea sier
    for some languages. Just thinking of the practicalities involved. Take
    Vietnamese as an example, each combination of vowel and tone mark exists as
    a single precomposed character in Unicode.

    Then look at Microsoft's keyboard layout for Vietnamese. Due to the design
    parameters of keyboard layouts on Windows, Microsoft used combining
    diacritics for tone marks.

    Currently Yoruba doesn't have all its letters available as precomposed
    characters. But if it did, and you created a keyboard layout for it using
    MSKLC on Windows, you would end up using some combining diacritics for tone
    marking as well.

    The need for combining diacritics will not go away, and for some langauges,
    the existence of precomposed characters (if accepted into Unicode) will not
    make an practical difference in soem environments. It will amke a difference
    for some, but for diacritic heavy languages that can use more than one
    diacritic on a base character at a time, there are other issues that may
    make use of precomposed forms unlikely in all instances.

    Andrew Cunningham
    Vicnet Research and Development Coordinator
    State Library of Victoria

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