>    > On a conformant processor you'll need a node-set() extension 
>    > function for that. (Are there some processors that don't flag 
>    > this as an error?)
> 
>    Saxon 7.8 :)
> 
> even if you say version="1.0"? Hmm If that's conforming to 
> xslt 2 spec I think there should be a change to the draft 
> spec to make it not conformant.

When you submit a version 1.0 stylesheet to an XSLT 2.0 processor it's
allowed to reject it or give you a warning, but if it decides to process
it then it does so using the XSLT 2.0 semantics, with backwards
compatibility enabled.

An XSLT 2.0 processor is *not* required to detect every time you do
something that wouldn't have been allowed under 1.0 and reject it if the
stylesheet says version="1.0". That would be far too burdensome,
especially for facilities like this one where it would require extra
information to be maintained at run-time.

Michael Kay


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