The conditional statement doesn't work. However -- and this is what I
don't understand -- if I put in a valid value in place of the current
'{.}', it does work.
[(_at_)id='{.}']
tests if the id attribute is equal to the string '{.}' which it isn't.
stuff inside string quotes is always a string literal in Xpath, and
that is the only place that {} is valid, as part of a string, {} never
has any special meaning in an Xpath expression.
If you wanted to test if the id attribute were equal to . you'd use
[(_at_)id=(_dot_)]
except you don't want that as . there is the current node at that point,
ie the element that has the id attribute that you are testing.
probably you want
[(_at_)id=current()]
to test against the value of the node current at the outer expression.
David
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