[Bug 25185] Usage absorption can take crawling expressions when TDU derives from xs:anyAtomicType

https://www.w3.org/Bugs/Public/show_bug.cgi?id=25185

--- Comment #1 from Michael Kay <mike@saxonica.com> ---
I think you are right.

(You say "it is an error if the expression returns more than one node", which
is not strictly correct; it's OK if the expression returns more than one node
provided the atomized value is a singleton. So all selected nodes except one
must have a typed value that is an empty sequence)

Some cases may be tricky to handle, but I think it works in theory.

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Received on Thursday, 27 March 2014 23:59:30 UTC