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There is an error in the generation of the signatures of all the illustrative user-written functions, see for instance: - http://www.w3.org/TR/xpath-functions-30/#if-empty signature: fn:eg:if-empty( $node as node()?, $value as xs:anyAtomicType) as xs:anyAtomicType* instead of: eg:if-empty( $node as node()?, $value as xs:anyAtomicType) as xs:anyAtomicType*
Thanks for pointing this out. I have made the necessary changes to the markup, but I will defer marking the bug as fixed until I have done a new build and have verified that the document is rendered correctly.
The problem appears to have been fixed.