Merged revisions 63542-63544,63546,63553,63563-63564,63567,63569,63576 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

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  r63542 | mark.dickinson | 2008-05-22 20:35:30 -0500 (Thu, 22 May 2008) | 5 lines

  Issue #2819: Add math.sum, a function that sums a sequence of floats
  efficiently but with no intermediate loss of precision.  Based on
  Raymond Hettinger's ASPN recipe.  Thanks Jean Brouwers for the patch.
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  r63543 | mark.dickinson | 2008-05-22 21:36:48 -0500 (Thu, 22 May 2008) | 2 lines

  Add tests for math.sum (Issue #2819)
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  r63544 | mark.dickinson | 2008-05-22 22:30:01 -0500 (Thu, 22 May 2008) | 2 lines

  Better error reporting in test_math.py
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  r63546 | raymond.hettinger | 2008-05-22 23:32:43 -0500 (Thu, 22 May 2008) | 1 line

  Tweak the comments and formatting.
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  r63553 | mark.dickinson | 2008-05-23 07:07:36 -0500 (Fri, 23 May 2008) | 3 lines

  Skip math.sum tests on non IEEE 754 platforms, and on IEEE 754 platforms
  that exhibit the problem described in issue #2937.
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  r63563 | martin.v.loewis | 2008-05-23 10:18:28 -0500 (Fri, 23 May 2008) | 3 lines

  Issue #1390: Raise ValueError in toxml when an invalid comment would
  otherwise be produced.
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  r63564 | raymond.hettinger | 2008-05-23 12:21:44 -0500 (Fri, 23 May 2008) | 1 line

  Issue 2909: show how to name unpacked fields.
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  r63567 | raymond.hettinger | 2008-05-23 12:34:34 -0500 (Fri, 23 May 2008) | 1 line

  Fix typo
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  r63569 | martin.v.loewis | 2008-05-23 14:33:13 -0500 (Fri, 23 May 2008) | 3 lines

  Mention that the leaking of variables from list comprehensions
  is fixed in 3.0.
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  r63576 | martin.v.loewis | 2008-05-24 04:36:45 -0500 (Sat, 24 May 2008) | 3 lines

  Don't try to get the window size if it was never set before.
  Fixes the test failure on Solaris.
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diff --git a/Lib/test/test_minidom.py b/Lib/test/test_minidom.py
index 20130c3..ca1f836 100644
--- a/Lib/test/test_minidom.py
+++ b/Lib/test/test_minidom.py
@@ -1314,6 +1314,11 @@
             for i in range(len(n1.childNodes)):
                 stack.append((n1.childNodes[i], n2.childNodes[i]))
 
+    def testSerializeCommentNodeWithDoubleHyphen(self):
+        doc = create_doc_without_doctype()
+        doc.appendChild(doc.createComment("foo--bar"))
+        self.assertRaises(ValueError, doc.toxml)
+
 def test_main():
     run_unittest(MinidomTest)