SI-6888 Loosen criteria for $outer search.

In order to cater for nested classes with names that end
with '$', which lead to ambiguity when unmangling expanded
names.

In:

    class X { object $ }

We end up with:

    orginalName(X$$$$$outer) = $$$outer

This change modifies `outerSource` to consider that to be
and outer accessor name. It is a piecemeal fix, and no doubt
there are other nasty surprises in store for those inclined to
flash their $$$ in identifier names, but the method changed is
not used widely and this solves the reported problem.

SI-2806 remains open to address the deeper problem.

1 files changed, 19 insertions, 0 deletions

diff --git a/test/files/run/t6888.scala b/test/files/run/t6888.scala
new file mode 100644
index 0000000000..0c64cbe5b6
--- /dev/null
+++ b/test/files/run/t6888.scala
@@ -0,0 +1,19 @@
+class C {
+  val x = 1
+  object $ {
+    val y = x + x
+    class abc$ {
+      def xy = x + y
+    }
+    object abc$ {
+      def xy = x + y
+    }
+  }
+}
+
+object Test extends App {
+  val c = new C()
+  println(c.$.y)
+  println(c.$.abc$.xy)
+  println(new c.$.abc$().xy)
+}