bpo-30532: Fix whitespace folding in certain cases
Leading whitespace was incorrectly dropped during folding of certain lines in the _header_value_parser's folding algorithm. This makes the whitespace handling code consistent.
diff --git a/Lib/test/test_email/test__header_value_parser.py b/Lib/test/test_email/test__header_value_parser.py
index 26ece69..e0ec87d 100644
--- a/Lib/test/test_email/test__header_value_parser.py
+++ b/Lib/test/test_email/test__header_value_parser.py
@@ -2711,5 +2711,17 @@
self._test(parser.get_unstructured('xxx ' + 'y'*77),
'xxx \n ' + 'y'*77 + '\n')
+ def test_long_filename_attachment(self):
+ folded = self.policy.fold('Content-Disposition', 'attachment; filename="TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TES.txt"')
+ self.assertEqual(
+ 'Content-Disposition: attachment;\n filename="TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TES.txt"\n',
+ folded
+ )
+ folded = self.policy.fold('Content-Disposition', 'attachment; filename="TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_T.txt"')
+ self.assertEqual(
+ 'Content-Disposition: attachment;\n filename="TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_TEST_T.txt"\n',
+ folded
+ )
+
if __name__ == '__main__':
unittest.main()