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[Bug 28762] [XSLT30] (editorial) focus of xsl:merge-key's select attribute and sequence constructor

From: <bugzilla@jessica.w3.org>
Date: Fri, 05 Jun 2015 12:44:46 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-28762-523-b5ieI0P9Tt@http.www.w3.org/Bugs/Public/>

--- Comment #2 from Michael Kay <mike@saxonica.com> ---
Thinking about this again... I chose those rules to be consistent with the
rules for xsl:sort keys. But sorting assumes you have the whole sequence
available, while merging is all designed for streamability. So I don't think
allowing use of position() and last() (in relation to the full input sequence)
make much sense. I propose instead to use a singleton focus based on the
individual item.

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