fix references (again)

quite tricky logic, but now outputting at lowest level, as intended

test/test_refs.rb

@@ -22,4 +22,14 @@ class TestRefs < MiniTest::Test
     check "-&1 {}
 -*1"
   end
+  def test_bigger
+    @out = [ { :one => @array , :two => [{ :three => @array}] } ]
+    check "--:one => &1 []\n -:two => -{:three => *1}"
+  end
+  def test_object
+    object = ObjectWithAttributes.new
+    object.extra = [object]
+    @out = [ {:one => object} , object ]
+    check "-{:one => *1}\n-&1 ObjectWithAttributes(:name => 'some name', :number => 1234)\n  :extra [*1]"
+  end
 end