Merged revisions 80512 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r80512 | r.david.murray | 2010-04-26 17:17:14 -0400 (Mon, 26 Apr 2010) | 7 lines

  Issue #6656: fix locale.format_string to handle escaped percents and mappings.

  Refactors format_string.  Includes tests for the two problems noted in
  the issue, but as far as I can see there are no other tests that confirm
  that format_string conforms to normal % formatting rules.
........
diff --git a/Lib/test/test_locale.py b/Lib/test/test_locale.py
index 9439522..6cdb67b 100644
--- a/Lib/test/test_locale.py
+++ b/Lib/test/test_locale.py
@@ -236,6 +236,25 @@
         self.assertRaises(ValueError, locale.format, " %f", 'foo')
         self.assertRaises(ValueError, locale.format, "%fg", 'foo')
         self.assertRaises(ValueError, locale.format, "%^g", 'foo')
+        self.assertRaises(ValueError, locale.format, "%f%%", 'foo')
+
+
+class TestLocaleFormatString(unittest.TestCase):
+    """General tests on locale.format_string"""
+
+    def test_percent_escape(self):
+        self.assertEqual(locale.format_string('%f%%', 1.0), '%f%%' % 1.0)
+        self.assertEqual(locale.format_string('%d %f%%d', (1, 1.0)),
+            '%d %f%%d' % (1, 1.0))
+        self.assertEqual(locale.format_string('%(foo)s %%d', {'foo': 'bar'}),
+            ('%(foo)s %%d' % {'foo': 'bar'}))
+
+    def test_mapping(self):
+        self.assertEqual(locale.format_string('%(foo)s bing.', {'foo': 'bar'}),
+            ('%(foo)s bing.' % {'foo': 'bar'}))
+        self.assertEqual(locale.format_string('%(foo)s', {'foo': 'bar'}),
+            ('%(foo)s' % {'foo': 'bar'}))
+
 
 
 class TestNumberFormatting(BaseLocalizedTest, EnUSNumberFormatting):
@@ -377,6 +396,7 @@
     tests = [
         TestMiscellaneous,
         TestFormatPatternArg,
+        TestLocaleFormatString,
         TestEnUSNumberFormatting,
         TestCNumberFormatting,
         TestFrFRNumberFormatting,