fix #1779: support $_ and $_id in interpolated string

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/run/i1779.scala b/tests/run/i1779.scala
new file mode 100644
index 000000000..e81bc97b6
--- /dev/null
+++ b/tests/run/i1779.scala
@@ -0,0 +1,13 @@
+object Test {
+  implicit class Foo(sc: StringContext) {
+    object q {
+      def unapply(arg: Any): Option[(Any, Any)] =
+        Some((sc.parts(0), sc.parts(1)))
+    }
+  }
+
+  def main(args: Array[String]): Unit = {
+    val q"class $_ extends $_parent" = new Object
+    println(_parent)
+  }
+}