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At 2004-04-03 20:10 +0200, Suzan Foster wrote:
>Taking the following XML:
>
> <foo>
> <bar id="1" />
> <bar id="2" />
> <bar id="3" />
> <fu />
> </foo>
>
>which value should be returned by the xpath:
>
>preceding::bar[1]/@id
>
>libxslt says 3, whilst XML::XPath says 1.
If your current node is the <fu/> element node, then the answer is "3".
All axes are traversed in a step in proximity order, so the preceding axis
is traversed in reverse document order, so the closest one is the one with
id="3".
Note the different answer with "(preceding::bar)[1]/@id" which is "1"
because the set of nodes in the parens is addressed by XSLT in document order.
I hope this helps.
.................. Ken
--
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