diff -r a88310d86455 Lib/test/test_plistlib.py
--- a/Lib/test/test_plistlib.py	Sun Apr 14 19:22:47 2013 +0200
+++ b/Lib/test/test_plistlib.py	Tue Apr 16 20:28:14 2013 -0400
@@ -141,6 +141,18 @@
         data2 = plistlib.writePlistToBytes(pl2)
         self.assertEqual(data, data2)
 
+    def test_indentation_array(self):
+        data = [[[[[[[[{'test': plistlib.Data(b'aaaaaa')}]]]]]]]]
+        self.assertEqual(plistlib.readPlistFromBytes(plistlib.writePlistToBytes(data)), data)
+
+    def test_indentation_dict(self):
+        data = {'1': {'2': {'3': {'4': {'5': {'6': {'7': {'8': {'9': plistlib.Data(b'aaaaaa')}}}}}}}}}
+        self.assertEqual(plistlib.readPlistFromBytes(plistlib.writePlistToBytes(data)), data)
+
+    def test_indentation_dict_mix(self):
+        data = {'1': {'2': [{'3': [[[[[{'test': plistlib.Data(b'aaaaaa')}]]]]]}]}}
+        self.assertEqual(plistlib.readPlistFromBytes(plistlib.writePlistToBytes(data)), data)
+
     def test_appleformatting(self):
         pl = plistlib.readPlistFromBytes(TESTDATA)
         data = plistlib.writePlistToBytes(pl)