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> We (at jaxen.org) have had many discussions, particular regarding
> //foo and our breadth-first walk of the tree instead of depth-first.
> We sometimes end up with nodes out-of-document-order.
> Technically, I think we're compliant, but it sure can annoy the
> user. ;)
It would certainly be annoying if, for example, (//foo) didn't
return the 4th foo element in the document, because it wouldn't be
In the XPath 1.0 spec it states that a Predicate on an expression (as
here) filters the node-set with respect to the child axis . The
child axis is a forward axis, so the nodes must be arranged in
document order when assessing their position .