2 files changed, 13 insertions, 0 deletions
diff --git a/sources/scala/util/regexp/Base.scala b/sources/scala/util/regexp/Base.scala
index 4b4ed2cd65..376130759e 100644
--- a/sources/scala/util/regexp/Base.scala
+++ b/sources/scala/util/regexp/Base.scala
@@ -40,6 +40,7 @@ trait Base {
   case class  Star(r: regexp)   extends RegExp {
     final val isNullable = true;
   }
+
   case object Eps               extends RegExp {
     final val isNullable = true;
     override def toString() = "Eps";
diff --git a/sources/scala/util/regexp/WildcardBase.scala b/sources/scala/util/regexp/WildcardBase.scala
new file mode 100644
index 0000000000..d69192221d
--- /dev/null
+++ b/sources/scala/util/regexp/WildcardBase.scala
@@ -0,0 +1,12 @@
+// $Id$
+
+package scala.util.regexp ;
+
+/** for use as a mixin to add wildcards to the language */
+
+trait WildcardBase extends Base {
+  type regexp <: RegExp;
+  case object Wildcard                       extends RegExp {
+    final val isNullable = false;
+  }
+}