Merged revisions 76469 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r76469 | senthil.kumaran | 2009-11-24 00:32:52 +0530 (Tue, 24 Nov 2009) | 10 lines

  Merged revisions 76464 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r76464 | senthil.kumaran | 2009-11-24 00:11:31 +0530 (Tue, 24 Nov 2009) | 4 lines

    Fix for issue1488943 - difflib.Differ() doesn't always add hints for tab
    characters.
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diff --git a/Lib/test/test_difflib.py b/Lib/test/test_difflib.py
index c314b53..852aae9 100644
--- a/Lib/test/test_difflib.py
+++ b/Lib/test/test_difflib.py
@@ -20,6 +20,14 @@
         diff_gen = difflib.unified_diff([], [])
         self.assertRaises(StopIteration, next, diff_gen)
 
+    def test_added_tab_hint(self):
+        # Check fix for bug #1488943
+        diff = list(difflib.Differ().compare(["\tI am a buggy"],["\t\tI am a bug"]))
+        self.assertEqual("- \tI am a buggy", diff[0])
+        self.assertEqual("?            --\n", diff[1])
+        self.assertEqual("+ \t\tI am a bug", diff[2])
+        self.assertEqual("? +\n", diff[3])
+
 patch914575_from1 = """
    1. Beautiful is beTTer than ugly.
    2. Explicit is better than implicit.