Index: Lib/test/test_with.py
===================================================================
--- Lib/test/test_with.py	(revision 72182)
+++ Lib/test/test_with.py	(working copy)
@@ -654,12 +654,70 @@
             self.fail("ZeroDivisionError should have been raised")
 
 
+class NestedWith(unittest.TestCase):
+
+    class Dummy(object):
+        def __init__(self, value=None): 
+            if value is None:
+                value = self
+            self.value = value
+            self.enter_called = False
+            self.exit_called = False
+
+        def __enter__(self):
+            self.enter_called = True
+            return self.value
+
+        def __exit__(self, *exc_info): 
+            self.exit_called = True
+
+    class CtorThrows(object):
+        def __init__(self): raise RuntimeError()
+
+    class EnterThrows(object):
+        def __enter__(self): raise RuntimeError()
+        def __exit__(self, *exc_info): pass
+
+    def testNoExceptions(self):
+        with self.Dummy() as a, self.Dummy() as b:
+            self.assertTrue(a.enter_called)
+            self.assertTrue(b.enter_called)
+        self.assertTrue(a.exit_called)
+        self.assertTrue(b.exit_called)
+
+    def testExceptionInExprList(self):
+        try:
+            with self.Dummy() as a, self.CtorThrows():
+                pass
+        except:
+            pass
+        self.assertTrue(a.enter_called)
+        self.assertTrue(a.exit_called)
+
+    def testExceptionInEnter(self):
+        try:
+            with self.Dummy() as a, self.EnterThrows():
+                pass
+        except:
+            pass
+        self.assertTrue(a.enter_called)
+        self.assertTrue(a.exit_called)
+        
+    def testEnterReturnsTuple(self):
+        with self.Dummy(value=(1,2)) as (a1, a2), \
+             self.Dummy(value=(10, 20)) as (b1, b2):
+            self.assertEquals(1, a1)
+            self.assertEquals(2, a2)
+            self.assertEquals(10, b1)
+            self.assertEquals(20, b2)
+
 def test_main():
     run_unittest(FailureTestCase, NonexceptionalTestCase,
                  NestedNonexceptionalTestCase, ExceptionalTestCase,
                  NonLocalFlowControlTestCase,
                  AssignmentTargetTestCase,
-                 ExitSwallowsExceptionTestCase)
+                 ExitSwallowsExceptionTestCase,
+                 NestedWith)
 
 
 if __name__ == '__main__':