From: John H. Jenkins (jenkins@apple.com)
Date: Mon Nov 29 2010 - 15:51:30 CST
On 2010/11/29, at δΈε2:17, M.-A. Lemburg wrote:
> Question: Why don't these code points have the "Nd" category ?
>
Because they're not numerals, they're words/parts of words. East Asian writing systems don't traditionally distinguish the numeral "1" from the number-word "one." Yes, you *can* use them as straight decimal digits, but that's an extended use, and it's more akin to "two zero one zero" than "2010."
> Related to this, it is also unclear what to use as official zero
> for these number systems (U+3007 is often recommended).
>
There isn't an official zero. U+3007 and U+96F6 are the two that are generally used. Which you want to use is somewhat context-dependent; if possible, the choice should be left to the user.
=====
John H. Jenkins
jenkins@apple.com
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