Scala XML \\ copies xmlns attribute. Why and how can I stop it?

Question

In Scala REPL:

val input = <outerTag xmlns="http://xyz"> <innerTag> </innerTag> </outerTag>

input\\@"innerTag"

=>

<innerTag xmlns="http://xyz"> </innerTag>

How do I stop Scala do this? Why can't it just give me <innerTag> </innerTag>? How can I stop this happening (or remove the xmlns attributes simply)?

Thanks!

Joe

Clarification: My overall task is chopping up an XML file and recombining it. So this node will be taken from beneath the root node (which has the xmlns attribute) and then integrated back into a document under a root which again has the xmlns.

Answer 1

Use named parameter and Elem.copy() in Scala 2.8.0:

scala> import scala.xml._
import scala.xml._

scala> val outer = <outerTag xmlns="http://xyz"><innerTag></innerTag></outerTag>
outer: scala.xml.Elem = <outerTag xmlns="http://xyz"><innerTag></innerTag></outerTag>

scala> outer \\ "innerTag" map { case e: Elem => e.copy(scope = TopScope) }
res0: scala.xml.NodeSeq = <innerTag></innerTag>