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#11584: make Header and make_header handle binary unknown-8bit input

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Analogous to the decode_header fix, this fix makes Header.append and
make_header correctly handle the unknown-8bit charset introduced by email5.1,
when the input to them is binary strings.  Previous to this fix the
make_header(decode_header(x)) == x invariant was broken in the face of the
unknown-8bit charset.
This commit is contained in:
R David Murray 2011-06-18 12:57:28 -04:00
parent 6bdb1769dc
commit e5e366c856
3 changed files with 21 additions and 2 deletions
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15
Lib/email/test/test_email.py
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@ -4182,6 +4182,21 @@ A very long line that must get split to something other than at the
'Ynwp4dUEbay Auction Semiar- No Charge \uFFFD Earn Big')
self.assertEqual(email.header.decode_header(h), [(x, 'unknown-8bit')])
def test_header_handles_binary_unknown8bit(self):
x = b'Ynwp4dUEbay Auction Semiar- No Charge \x96 Earn Big'
h = Header(x, charset=email.charset.UNKNOWN8BIT)
self.assertEqual(str(h),
'Ynwp4dUEbay Auction Semiar- No Charge \uFFFD Earn Big')
self.assertEqual(email.header.decode_header(h), [(x, 'unknown-8bit')])
def test_make_header_handles_binary_unknown8bit(self):
x = b'Ynwp4dUEbay Auction Semiar- No Charge \x96 Earn Big'
h = Header(x, charset=email.charset.UNKNOWN8BIT)
h2 = email.header.make_header(email.header.decode_header(h))
self.assertEqual(str(h2),
'Ynwp4dUEbay Auction Semiar- No Charge \uFFFD Earn Big')
self.assertEqual(email.header.decode_header(h2), [(x, 'unknown-8bit')])
def test_modify_returned_list_does_not_change_header(self):
h = Header('test')
chunks = email.header.decode_header(h)