xml parsing blindly interprets spliced method call in xmlns attribute as xml.Text("uri")

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object Test extends App {
  def getNs(v: String) = s"http://schemas.sample.com/sample/$v"
  def getNs2(v: String, dummy: String) = s"http://schemas.sample.com/sample/$v"
  val x0 = <sample><id>1</id></sample>
  val x1 = <sample xmlns:foo="bar"><id xmlns="baz">1</id></sample>

  val x2 = <sample xmlns={getNs("v1")}><id>1</id></sample>
  val x3 = <sample xmlns={getNs2("v1", "dummy")}><id>1</id></sample>
  
  println(List(x0, x1, x2, x3) mkString "\n")
}

x2 is assigned the namspace "v1".

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Imported From: https://issues.scala-lang.org/browse/SI-8253?orig=1
Reporter: @retronym

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@retronym said:
WIP: https://github.com/retronym/scala/compare/ticket;8253?expand=1

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@gkossakowski said:
The 2.11.2 is out so I'm rescheduling the issue for 2.11.3.

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@retronym said:
Updating fix-by version to 2.11.5.

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@retronym said:
scala/scala#4123

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@retronym said:
This caused a test failure in scala-xml. See scala/scala#4183 / scala/scala-xml#36