Union operator is broken

[tekhedd]

The union operator does not work. For example, this path:

//mynode|//myothernode

compiles to

((null) | root:) | (root:))

Using IXPathBuilder.

[qmfrederik]

Hi @tekhedd

Thanks for filing these issues!

As you've probably noticed, things are rather quiet in this repo. We'd be happy to take PRs that improve it, though -- even if it's only adding failing unit tests for issues that you've found.