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[Bug 29355] Modernize sequence filtering

From: <bugzilla@jessica.w3.org>
Date: Mon, 11 Jan 2016 18:55:25 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-29355-523-TGBfYOubDr@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=29355

--- Comment #7 from Benito van der Zander <benito@benibela.de> ---
Or perhaps the problem was a conflict with A[child] to check for the existence
of children.

If you had an XPath/XQuery preprocessor and a standard interpreter, you could
change every occurrence of A[B] to  A[let $b := B return if (count($b) le 1 or
head($b) instance of node()) then $b else position() = $b ] which should give a
reasonable, well-defined modernized behaviour.

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