RE: Text Editors and Canonical Equivalence (was Coloured diacritics)

From: Philippe Verdy (verdy_p@wanadoo.fr)
Date: Thu Dec 11 2003 - 21:34:54 EST

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    Mark Davis wrote:
    > You could conceivably restrict your dream programming language to only
    > 'complete' default grapheme clusters, defined as those where the
    > addition of previous characters would never change that boundary, but
    > in practice I don't think your dream language would be particularly
    > useful at, well, actual programming.

    In practice it's impossible to restrict only to "complete" default
    grapheme clusters: look at Hangul, and take a "complete" syllable;
    you can still extend that cluster by prepending another leading
    consonnant (which is, by itself a complete Hangul syllable).

    With the restriction to "complete" DGCs, you could not write
    in Korean! However you could guarantee it provided that you
    don't only concatenate strings, but ensure that each instance does
    not contain defective sequences, and you add a forced space
    character between the two concatenated strings (this is apparently
    what Word does when copy/pasting words)

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