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[Bug 28058] fn:parse-json: Handling unknown keys

From: <bugzilla@jessica.w3.org>
Date: Thu, 19 Feb 2015 14:11:11 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-28058-523-qnZvGmq5eW@http.www.w3.org/Bugs/Public/>

--- Comment #1 from Michael Kay <mike@saxonica.com> ---
There is a trade-off here, but we decided that it was a good idea to allow new
options to be introduced by vendors or in future releases without causing
queries to fail if they use such options, and are then run with a product that
does not recognize them. This is the way extension attributes in XSLT work, for
example, and it has worked very well. We could have used namespaces so that
extensions are self=contained, but that seemed over-engineered for the purpose.

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