Michael Kay - 2003-02-14

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In 7.4 I have changed the handling of extension functions
that return a List. The List is now interpreted as an XPath
sequence. Each of the items is converted individually from a
Java object to an XPath item. If the members of the list are
unknown types, you end up with each item being wrapped as an
XPath external object, rather than with the List as a whole
being treated as an external object,