Subject: RE: [xsl] key() in match pattern of xsl:key From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Mon, 12 Dec 2005 19:22:28 -0000 |
> Any clue why keys referencing keys is illegal but variables > referencing variables is ok? > A number of late comments were raised (by me, IIRC) on the final draft of the XSLT 1.0 spec pointing out possibilities for circularities where the spec didn't say what should happen. The Working Group played safe and fixed these by imposing restrictions. The restriction on using variable references in a match pattern falls into the same category. I don't think anyone expected that users would still be living with those restrictions six years later. Variables referencing variables was already covered in the spec. So the simple answer is that one had been thought through properly, the other was a rushed decision. Michael Kay http://www.saxonica.com/
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