That is (and was previously) supported.
This routine is walking the xpath nodes and extracting the qualifiers  which it used to do before this commit).
This commits extends it by spotting multiple adjacent qualifiers on the same node, so before:

    /abc[@x="3"]/def[@y="2"] 

.. was supported, but:

    /abc[@x="3"][@x2="4"]/def[@y="2"][@y2="3"]

.. was not.

Now, both are supported.