- From: Henry S. Thompson <ht@inf.ed.ac.uk>
- Date: Fri, 22 Aug 2008 14:48:00 +0100
- To: noah_mendelsohn@us.ibm.com
- Cc: John Bradley <john.bradley@wingaa.com>, "Booth, David (HP Software - Boston)" <dbooth@hp.com>, Julian Reschke <julian.reschke@gmx.de>, www-tag@w3.org
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In case any residual uncertainty remains, can I summmarise Noah's
contribution as follows:
1) All XML 1.0 namespace names MUST be non-empty URI references, and
SHOULD be absolute.
2) All XML 1.1 namespace names MUST be non-empty IRI referencess, and
SHOULD be absolute.
3) The W3C XML Schema 1.0 simple type 'anyURI' MUST be a string
(possibly empty), intended to fulfill the role of a URI reference,
and SHOULD represent a valid URI reference after escaping per
XLink section 5.4
4) The W3C XML Schema 1.1 simple type 'anyURI' MUST be a string
(possibly empty), intended to fulfill the role of an IRI
reference, and SHOULD represent a valid URI reference after
escaping per 3987 section 3.1
It follows that there are valid 'anyURI' values which are not valid
namespace names.
This is by design: it should be clear from the above summary that
there is _no_ intention that the value space of the anyURI type and
the set of legal namespace names be co-extensive.
ht
- --
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) 131 650-4587, e-mail: ht@inf.ed.ac.uk
URL: http://www.ltg.ed.ac.uk/~ht/
[mail really from me _always_ has this .sig -- mail without it is forged spam]
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Received on Friday, 22 August 2008 13:49:05 UTC