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xml:base, yet again

From: Richard Tobin <richard@inf.ed.ac.uk>
Date: Wed, 7 Jun 2006 14:40:15 +0100 (BST)
To: public-xml-core-wg@w3.org
Message-Id: <20060607134015.BFDD96DC971@macintosh.inf.ed.ac.uk>

I exchanged email with Roy Fielding concerning the interpretation of
xml:base attributes.

He says that same-document references are only relevant for retrieval.
RFC 2396 clearly says in the section on resolving relative references
(5.2 step 2) that an empty URI reference is a reference to the current
document, but RFC 3986 does not mention it in that context, and Roy
says that RFC 3986 was specifically intended to correct
misunderstandings about same-document references.

If we accept this, then we can return to believing that xml:base=""
is a no-op, which is certainly less surprising.  To test current
implementations, I have created an XInclude document which produces
different results depending on how xml:base="" is interpreted.

Please point your XInclude implementation at


and see what the result is.

-- Richard
Received on Wednesday, 7 June 2006 13:40:22 UTC

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