File: t7039.scala

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scala 2.11.12-6
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object UnapplySeqTest {
  def unapplySeq(any: Any): Option[(Int, Seq[Int])] = Some((5, List(1)))
}

object Test extends App {
  null match {
    case UnapplySeqTest(5) => println("uh-oh")
    case UnapplySeqTest(5, 1) => println("Matched!") // compiles
    case UnapplySeqTest(5, xs @ _*) => println("toooo long: "+ (xs: Seq[Int]))
  }
}