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bpo-27737: Allow whitespace only headers encoding (#13478)

This commit is contained in:
Batuhan Taşkaya 2019-05-23 04:13:16 +03:00 committed by R. David Murray
parent 6bc5917903
commit ef5bb25e2d
3 changed files with 6 additions and 1 deletions
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2
Lib/email/header.py
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@ -431,7 +431,7 @@ class _ValueFormatter:
if end_of_line != (' ', ''): if end_of_line != (' ', ''):
self._current_line.push(*end_of_line) self._current_line.push(*end_of_line)
if len(self._current_line) > 0: if len(self._current_line) > 0:
if self._current_line.is_onlyws(): if self._current_line.is_onlyws() and self._lines:
self._lines[-1] += str(self._current_line) self._lines[-1] += str(self._current_line)
else: else:
self._lines.append(str(self._current_line)) self._lines.append(str(self._current_line))

3
Lib/test/test_email/test_email.py
View File

@ -4964,6 +4964,9 @@ A very long line that must get split to something other than at the
msg['SomeHeader'] = ' value with leading ws' msg['SomeHeader'] = ' value with leading ws'
self.assertEqual(str(msg), "SomeHeader: value with leading ws\n\n") self.assertEqual(str(msg), "SomeHeader: value with leading ws\n\n")
def test_whitespace_header(self):
self.assertEqual(Header(' ').encode(), ' ')
# Test RFC 2231 header parameters (en/de)coding # Test RFC 2231 header parameters (en/de)coding

2
Misc/NEWS.d/next/Library/2019-05-22-02-25-31.bpo-27737.7bgKpa.rst Normal file
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@ -0,0 +1,2 @@
Allow whitespace only header encoding in ``email.header`` - by Batuhan
Taskaya