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Re: XML 1.0 5th Ed. PER: Unicode upgrade

From: Henry S. Thompson <ht@inf.ed.ac.uk>
Date: Fri, 03 Oct 2008 10:50:30 +0100
To: John Boyer <boyerj@ca.ibm.com>
Cc: xml-editor@w3.org
Message-ID: <f5by716c8ih.fsf@hildegard.inf.ed.ac.uk>

Hash: SHA1

Thank you for your observations about the proposed 5th edition of XML
1.0, which the XML Core WG have considered.  We have decided not to
make any changes, however, as we think the spec. already does what you
suggest: the Char production [1] already allows almost all the 16-bit
codepoints, all the (mostly unused) 17--20 -bit code points and the
first 65K 21-bit codepoints (again, currently unused).  One is advised
to 'Never say never', but let us say it is extremely unlikely that we
will ever need more than 17 times as many characters as we are
currently using, so this really does seem sufficient for the
indefinite future.

Please let us know if you are content with this resolution.


[1] http://www.w3.org/TR/2006/REC-xml-20060816/#NT-Char
- -- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
                         Half-time member of W3C Team
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 651-1426, e-mail: ht@inf.ed.ac.uk
                       URL: http://www.ltg.ed.ac.uk/~ht/
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Received on Friday, 3 October 2008 09:53:20 UTC

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