Remove meaning of -ttt, but still accept -t option on cmdline for compatibility.
diff --git a/Lib/doctest.py b/Lib/doctest.py
index dad8333..772e142 100644
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -1441,6 +1441,13 @@
     and returns true if they match; and `output_difference`, which
     returns a string describing the differences between two outputs.
     """
+
+    def _toAscii(self, s):
+        """
+        Convert string to hex-escaped ASCII string.
+        """
+        return str(s.encode('ASCII', 'backslashreplace'), "ASCII")
+
     def check_output(self, want, got, optionflags):
         """
         Return True iff the actual output from an example (`got`)
@@ -1451,6 +1458,15 @@
         documentation for `TestRunner` for more information about
         option flags.
         """
+
+        # If `want` contains hex-escaped character such as "\u1234",
+        # then `want` is a string of six characters(e.g. [\,u,1,2,3,4]).
+        # On the other hand, `got` could be an another sequence of
+        # characters such as [\u1234], so `want` and `got` should
+        # be folded to hex-escaped ASCII string to compare.
+        got = self._toAscii(got)
+        want = self._toAscii(want)
+
         # Handle the common case first, for efficiency:
         # if they're string-identical, always return true.
         if got == want:
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index 66ce2ad..3f8b683 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -768,7 +768,7 @@
         a = array.array('u', s)
         self.assertEqual(
             repr(a),
-            "array('u', '\\x00=\"\\'a\\\\b\\x80\\xff\\x00\\x01\\u1234')")
+            "array('u', '\\x00=\"\\'a\\\\b\\x80\xff\\x00\\x01\u1234')")
 
         self.assertRaises(TypeError, a.fromunicode)
 
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index ef562db..557d56c 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -159,6 +159,9 @@
         S = [10, 20, 30]
         self.assertEqual(any(x > 42 for x in S), False)
 
+    def test_ascii(self):
+        self.assertEqual(ascii("\u0370"), "'\\u0370'")
+
     def test_neg(self):
         x = -sys.maxsize-1
         self.assert_(isinstance(x, int))
diff --git a/Lib/test/test_exceptions.py b/Lib/test/test_exceptions.py
index 619b7e3..41b9413 100644
--- a/Lib/test/test_exceptions.py
+++ b/Lib/test/test_exceptions.py
@@ -80,10 +80,10 @@
         self.raise_catch(IndentationError, "IndentationError")
 
         self.raise_catch(TabError, "TabError")
-        # can only be tested under -tt, and is the only test for -tt
-        #try: compile("try:\n\t1/0\n    \t1/0\nfinally:\n pass\n", '<string>', 'exec')
-        #except TabError: pass
-        #else: self.fail("TabError not raised")
+        try: compile("try:\n\t1/0\n    \t1/0\nfinally:\n pass\n",
+                     '<string>', 'exec')
+        except TabError: pass
+        else: self.fail("TabError not raised")
 
         self.raise_catch(SystemError, "SystemError")
 
diff --git a/Lib/test/test_format.py b/Lib/test/test_format.py
index fb91475..8bc47d4 100644
--- a/Lib/test/test_format.py
+++ b/Lib/test/test_format.py
@@ -216,6 +216,8 @@
         testformat("%o", 0o42, "42")
         testformat("%o", -0o42, "-42")
         testformat("%o", float(0o42), "42")
+        testformat("%r", "\u0370", "'\u0370'")
+        testformat("%a", "\u0370", "'\\u0370'")
         # Test exception for unknown format characters
         if verbose:
             print('Testing exceptions')
@@ -235,8 +237,8 @@
                 raise
             else:
                 raise TestFailed('did not get expected exception: %s' % excmsg)
-        test_exc('abc %a', 1, ValueError,
-                 "unsupported format character 'a' (0x61) at index 5")
+        test_exc('abc %b', 1, ValueError,
+                 "unsupported format character 'b' (0x62) at index 5")
         #test_exc(unicode('abc %\u3000','raw-unicode-escape'), 1, ValueError,
         #         "unsupported format character '?' (0x3000) at index 5")
         test_exc('%d', '1', TypeError, "%d format: a number is required, not str")
diff --git a/Lib/test/test_pyexpat.py b/Lib/test/test_pyexpat.py
index c252134..4947c8b 100644
--- a/Lib/test/test_pyexpat.py
+++ b/Lib/test/test_pyexpat.py
@@ -131,7 +131,7 @@
         self.assertEquals(op[1], "Comment: ' comment data '")
         self.assertEquals(op[2], "Notation declared: ('notation', None, 'notation.jpeg', None)")
         self.assertEquals(op[3], "Unparsed entity decl: ('unparsed_entity', None, 'entity.file', None, 'notation')")
-        self.assertEquals(op[4], "Start element: 'root' {'attr1': 'value1', 'attr2': 'value2\\u1f40'}")
+        self.assertEquals(op[4], "Start element: 'root' {'attr1': 'value1', 'attr2': 'value2\u1f40'}")
         self.assertEquals(op[5], "NS decl: 'myns' 'http://www.python.org/namespace'")
         self.assertEquals(op[6], "Start element: 'http://www.python.org/namespace!subelement' {}")
         self.assertEquals(op[7], "Character data: 'Contents of subelements'")
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 2f9add5..a267cf6 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -94,14 +94,14 @@
                 "JKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\\x7f"
                 "\\x80\\x81\\x82\\x83\\x84\\x85\\x86\\x87\\x88\\x89\\x8a\\x8b\\x8c\\x8d"
                 "\\x8e\\x8f\\x90\\x91\\x92\\x93\\x94\\x95\\x96\\x97\\x98\\x99\\x9a\\x9b"
-                "\\x9c\\x9d\\x9e\\x9f\\xa0\\xa1\\xa2\\xa3\\xa4\\xa5\\xa6\\xa7\\xa8\\xa9"
-                "\\xaa\\xab\\xac\\xad\\xae\\xaf\\xb0\\xb1\\xb2\\xb3\\xb4\\xb5\\xb6\\xb7"
-                "\\xb8\\xb9\\xba\\xbb\\xbc\\xbd\\xbe\\xbf\\xc0\\xc1\\xc2\\xc3\\xc4\\xc5"
-                "\\xc6\\xc7\\xc8\\xc9\\xca\\xcb\\xcc\\xcd\\xce\\xcf\\xd0\\xd1\\xd2\\xd3"
-                "\\xd4\\xd5\\xd6\\xd7\\xd8\\xd9\\xda\\xdb\\xdc\\xdd\\xde\\xdf\\xe0\\xe1"
-                "\\xe2\\xe3\\xe4\\xe5\\xe6\\xe7\\xe8\\xe9\\xea\\xeb\\xec\\xed\\xee\\xef"
-                "\\xf0\\xf1\\xf2\\xf3\\xf4\\xf5\\xf6\\xf7\\xf8\\xf9\\xfa\\xfb\\xfc\\xfd"
-                "\\xfe\\xff'")
+                "\\x9c\\x9d\\x9e\\x9f\\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9"
+                "\xaa\xab\xac\\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7"
+                "\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5"
+                "\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3"
+                "\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1"
+                "\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
+                "\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd"
+                "\xfe\xff'")
             testrepr = repr(''.join(map(chr, range(256))))
             self.assertEqual(testrepr, latin1repr)
             # Test repr works on wide unicode escapes without overflow.
@@ -374,6 +374,12 @@
         self.assertFalse("[".isidentifier())
         self.assertFalse("©".isidentifier())
 
+    def test_isprintable(self):
+        self.assertTrue("abcdefg".isprintable())
+        self.assertFalse("abcdefg\n".isprintable())
+        self.assertTrue("\u0370".isprintable())
+        self.assertFalse("\ud800".isprintable())
+
     def test_contains(self):
         # Testing Unicode contains method
         self.assert_('a' in 'abdb')