1 files changed, 30 insertions, 0 deletions
diff --git a/tests/run/t6406-regextract.scala b/tests/run/t6406-regextract.scala
new file mode 100644
index 000000000..26d0baedc
--- /dev/null
+++ b/tests/run/t6406-regextract.scala
@@ -0,0 +1,30 @@
+
+object Test extends dotty.runtime.LegacyApp {
+  import util.matching._
+  import Regex._
+
+  val r = "(\\d+)".r
+  val q = """(\d)""".r
+  val ns = List("1,2","x","3,4")
+  val u = r.unanchored
+
+  val is = ns collect { case u(x) => x } map { case r(x) => x }
+  println(is)
+  // Match from same pattern
+  val js = (ns map { u findFirstMatchIn _ }).flatten map { case r(x) => x }
+  println(js)
+  // Match not from same pattern
+  val ks = (ns map { q findFirstMatchIn _ }).flatten map { case r(x) => x }
+  println(ks)
+
+  val t = "Last modified 2011-07-15"
+  val p1 = """(\d\d\d\d)-(\d\d)-(\d\d)""".r
+  val y1: Option[String] = for {
+    p1(year, month, day) <- p1 findFirstIn t
+  } yield year
+  val y2: Option[String] = for {
+    p1(year, month, day) <- p1 findFirstMatchIn t
+  } yield year
+  println(s"$y1 $y2")
+
+}