RE: get immediat preceeding node, if it is a comment

DC:
> All later predicates refer to nodes for which earlier predicates are
> true.

That sums it up nicely,

cheers
andrew

> -----Original Message-----
> From: David Carlisle [mailto:davidc@xxxxxxxxx]
> Sent: 04 October 2002 14:25
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  get immediat preceeding node, if it is a comment
> 
> 
> 
> > It seems that any predicates after the positional predicate refer to
> > that node, not to the node that the predicates before the positional
> > predicate refer to... 
> 
> yes but that's a special case. You can have any number of [] 
> predicates
> in a step and after each one the remaining nodes in the current node
> list are those nodes for which the predicate was true.  while 
> evaluating
> the next [] position() and last() and count() all refer to the current
> node list (ie the list of nodes that have survivied any previous []
> predicates in the step)
> 
> 
> > preceding-sibling::node()[normalize-space()][1][self::comment()]
> > 
> > this gets 'test1' and 'test3' as we would expect
> 
> anything that involves [1] (anywhere) will select a node set 
> of at most
> one node. Your description in english suggests you used the expression
> 
> */preceding-sibling::node()[normalize-space()][1][self::comment()]
> 
> while <root> is your current node.
> 
> ie find all children that have the stated condition.
> 
> > So is it the case that all predicates to the right of the positional
> > predicate refer to that node? (they change the context node)
> 
> Yes but there is nothing special about the positional predicate it is
> just shorthand for the boolean test [position()=1].
> All later predicates refer to nodes for which earlier predicates are
> true.
> 
> David
> 
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