Pseudo example:
<xsl:function name="myf:funct" as="xs:string">
<xsl:param name="t" as="element(a) | element(b)"/>
...
Just use element() (the lowest common supertype). Or if the elements are
members of the same substitution group, use the name of the substitution
group head (with schema-element()).
<xsl:function name="myf:funct" as="xs:string">
<xsl:param name="t" as="element(b) | xs:string"/>
...
That looks like a pretty peculiar function to want to write. Rethink the
design.
Michael Kay
http://www.saxonica.com/
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