The part of the spec about numbers at
http://whatwg.org/specs/web-apps/current-work/#numbers
talks about skipping characters in the class Zs. Also, it talks about
characters like U+066A ARABIC PERCENT SIGN, U+FE6A SMALL PERCENT SIGN
and U+FF05 FULLWIDTH PERCENT SIGN.
On the other hand, when the spec talks about digits, it talks about "U
+0030 DIGIT ZERO to U+0039 DIGIT NINE" and not about character class Nd.
Referring to character classes instead of particular characters is
problematic, because what constitutes a conforming number changes
when Unicode introduces ANCIENT BRUTOPIAN QUARTER CUBIT SPACE or
SYLDAVIAN VULGAR DIGIT FIVE.
I think i18n political correctness has no place in attributes. I
think they should be ASCII only with the XML notion of whitespace.
However, the human-readable fallback content of the progress and
meter elements is not so clear-cut. Still, I doubt whether it is
worthwhile to have an unstable but universal number format for
content that is displayed to end users only as fallback.
--
Henri Sivonen
[EMAIL PROTECTED]
http://hsivonen.iki.fi/
