Here's your answer: http://code.google.com/p/v8/issues/detail?id=235 http://code.google.com/p/v8/issues/detail?id=235 "There are currently no plans for implem

Here's your answer: http://code.google.com/p/v8/issues/detail?id=235 http://code.google.com/p/v8/issues/detail?id=235 "There are currently no plans for implementing E4X in V8." This doesn't seem to have moved forward, and the thread ends in a link to libxmljs :)