Given two stylesheets with the same namespaces defined at the
top where one imports the other - what happens when the
module is compiled?
Entirely implementation-defined.
In Saxon, any instruction/expression that needs access to the namespace
context at run-time will (at compile time) make a copy of the namespace
context and save it on the expression tree. It's true that there is
therefore a slight overhead in having unused namespaces present in the
stylesheet - but I doubt it is measurable.
I can't quite see how import comes into this, however.
Michael Kay
http://www.saxonica.com/
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