> [It's not clear to me where in the spec it says that the default value
> of the parameter will not be evaluated if the template is passed a
> parameter value, but it seems sensible and Saxon and MSXML do it.]

Of course this only matters because xsl:message is unique in XSL of
having a side effect (making a message) so by putting xsl:message
inside variables like that, you get to find out when and how often
a processor (re-)evaluates a variable binding.

David


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