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[Bug 6027] [XPath] Extensions and Conformance

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Date: Tue, 06 Jan 2009 15:59:16 +0000
To: public-qt-comments@w3.org
Message-Id: <E1LKEKq-0005Rp-46@farnsworth.w3.org>


--- Comment #3 from Jonathan Robie <jonathan.robie@redhat.com>  2009-01-06 15:59:15 ---
I propose that we add this section to Conformance:

5.2 BNF Extensions

The XQuery language is defined in this specification. Any extensions to the
BNF are not part of the XQuery language. Users can easily determine whether a
query uses grammar not found in our
EBNF by using the XQuery applets [APPLETS]. 

As a Working Group, we control the XQuery BNF. If a vendor extends the BNF
in their product, that has no bearing on extensions we make in the future, even
if they are incompatible with existing vendor extensions.

In addition, we should consider whether to soften this error text:

It is a static error if an expression is not a valid instance of the grammar
defined in A.1 EBNF.

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Received on Tuesday, 6 January 2009 15:59:24 UTC

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