Re: typing of integer operations in Xpath2

  6) The rules could be changed to avoid promoting integers to doubles,
     when all operands are integer, and an integer result is sensible
     (e.g. plus, minus, idiv, multiply)

Yes but I'd rather not see such special casing as it's only papering
over the cracks. If you have an explicit list of functions then what
happens about user or vendor supplied functions that might also have
sensible integer valued results.  It ought to be possible to have a
general rule based on the specified return types of the functions I
think (although the built in functions are rather special in the way
the overload the same operators with differently typed functions)

David

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