> > > node:definition/*[not(name() = name(preceding-sibling::*))]
> >
> >Why should this take a long time?  Isn't this the same as
> >
> >*[not(name() = name(preceding-sibling::*[last()]))]
> 
> preceding-sibling::*[last()]), which therefore won't de-duplicate properly.
> 
> So it won't take a long time, and it won't work either.

But is there a way to express it as a single predicate? I mean, not equal to the name
of any preceding-sibling? Just out of curiousity.

David

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