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Hi Christian, > Getting XPath 1.0 expressions right is hard enough.. Personally, I > regard XPath expressions as atomic: they get me something out of a > document. There is no control flow in them, simple predicate tests > aside. With XPath 2.0, control flow will be scattered between the > languages built around XPath and the expressions themselves. Yes, that's a good way of making the distinction. Of course it depends what you mean by "atomic". In XPath 1.0, you might consider node sets as atomic, so similarly you should regard sequences in XPath 2.0 as atomic. And you could view a for expression as an expression that returns a sequence. The line is definitely blurred which is why, I think, different people's intuitions about where it should be drawn are different, and hard to articulate. Life would be simpler if we were in a position where we didn't have to draw the line at all, and we were using XQuery or Lisp. But we're not. Cheers, Jeni --- Jeni Tennison http://www.jenitennison.com/
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