Re: Display of Isolated Nonspacing Marks (was Re: Questions on ZWNBS...)

From: Peter Kirk (peter.r.kirk@ntlworld.com)
Date: Tue Aug 05 2003 - 18:31:03 EDT

  • Next message: Kenneth Whistler: "Re: Display of Isolated Nonspacing Marks (was Re: Questions on ZWNBS...)"

    On 05/08/2003 15:09, Mark Davis wrote:

    >><< Zs, Zl, and Zp are considered format characters, but their
    >>membership in the Z (separator) class takes precedence over their
    >>membership in the Cf class, because the General Category assigns
    >>
    >>
    >only
    >
    >
    >>a single value to each character. >>
    >>
    >>
    >
    >Whenever you have a question about the status of a character, you need
    >to look it up in the UCD. You can either do that by going through the
    >unicode website, or if you want a more readable interface, use the ICU
    >character browser, which formats that data.
    >
    >Look at space, U+0020.
    >
    >http://oss.software.ibm.com/cgi-bin/icu/ub/utf-8/?go=0020&ch.x=4&ch.y=7O 
    >
    >The general category is Space_Separator, *not* a format character.
    >
    >Now wording there could definitely be clearer, but the operant phrase
    >is:
    >
    >
    >
    >>...but their
    >>membership in the Z (separator) class *takes precedence* over their
    >>membership in the Cf class...
    >>
    >>
    >
    >So it would be cleared to say something like:
    >
    >In many ways the characters, Zs, Zl, and Zp, are similar to format
    >characters, but because their general usage is significantly different
    >they are broken out into a separate General Category, as Separator
    >characters.
    >
    >Mark
    >__________________________________
    >http://www.macchiato.com
    >► “Eppur si muove” ◄
    >
    >
    >
    >
    Thank you, Mark. This helps to clarify things, but still doesn't
    explicitly answer my question of how to encode "a sentence like "In this
    language the diacritic ^ may appear above the letters ...", but instead
    of ^ I want to use a combining character" and want to display exactly
    one space before the combining character - do I encode two spaces or one?

    -- 
    Peter Kirk
    peter.r.kirk@ntlworld.com
    http://web.onetel.net.uk/~peterkirk/
    


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