Re: numeric properties of Nl characters in the UCD

From: Mark Davis (mark.davis@jtcsv.com)
Date: Wed Nov 26 2003 - 11:02:48 EST

  • Next message: Peter Kirk: "Re: numeric properties of Nl characters in the UCD"

    I agree that it would be best to have a formal policy on that; but we could not assign different numbers without a contradication in the way that number_value and number_type are defined, so the relationship is stable.

    Mark
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      ----- Original Message -----
      From: Arcane Jill
      To: unicode@unicode.org
      Sent: Wed, 2003 Nov 26 02:12
      Subject: RE: numeric properties of Nl characters in the UCD

      That is almost precisely what I said. You repeated it perfectly. Thanks.

      But actually, there is one small difference between what I said and what you said. I merely observed that no characters have different non-null values for the various number-related properties. But you state (emphasis on *cannot*) that this is guaranteed. Please confirm - is there a hard-coded guarantee that no character will ever be added in the future for which the various number-related properties will have different non-null values? Such a guarantee would be useful, as it would allow me to do more optimisation of stored data.

      Jill

    > -----Original Message-----
    > From: Peter Constable [mailto:petercon@microsoft.com]
    > Sent: Tuesday, November 25, 2003 6:04 PM
    > To: unicode@unicode.org
    > Subject: RE: numeric properties of Nl characters in the UCD
    >
    >
    > Not all characters representing numbers are digits. Not all characters
    > representing digits are decimal digits.
    >
    > What *cannot* happen is for a character to have different non-null
    > values for the various number-related properties.
    >



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