Re: What is the principle?

From: Pavel Adamek (
Date: Tue Mar 30 2004 - 03:54:11 EST

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    > Unicode would benefit from having ranges of Private Use
    > characters that would be known to have certain character
    > properties, such as being a Variation Selector, or to take
    > a topic from a recent thread, if there were Private Use
    > characters with a default strong RTL property for the
    > Bidirectional Algorithm.

    It was mentioned that some authors of
    fonts for scripts which are not supported by Unicode
    place such characters
    at the positions of characters with appropriate properties
    and similar meaning, for example Latin Extended.

    This gives me following idea:
    suppose that another plane will be assigned for private use,
    but the properties of each position will be the same
    as the properties of the character
    at corresponding position in BMP.
    And if the rendering system does not know
    how to render these private characters,
    it will render the characters from BMP.
    This would provide the possibility
    to assign the codes for private characters in such way
    that the standard rendering systems
    would show such texts as transliteration
    to some similar script.


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