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Re: Feature incompatiblity in XML Schema 1.0

From: Henry S. Thompson <ht@cogsci.ed.ac.uk>
Date: 12 Dec 2002 10:55:34 +0000
To: "Matthew Fuchs" <matt@westbridgetech.com>
Cc: "Don Box" <dbox@microsoft.com>, <www-xml-schema-comments@w3.org>, "Ashok Malhotra" <ashokma@microsoft.com>, "Martin Gudgin" <mgudgin@microsoft.com>, "Allen Brown" <allenbr@microsoft.com>
Message-ID: <f5b1y4nfqvt.fsf@erasmus.inf.ed.ac.uk>

The schema docs as I posted them, without your additions, were legal,
because in the corresponding schema a) the
restriction accepted the same content as the base and b) it conformed
to the current by-cases restriction rules.  Your additions broke this,
by a) causing the restriction to accept more and b) breaking the
explicit by-cases rules.

In haste,

  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
          W3C Fellow 1999--2002, part-time member of W3C Team
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht@cogsci.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]
Received on Thursday, 12 December 2002 05:55:33 UTC

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