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-rw-r--r--Lib/email/generator.py2
-rw-r--r--Lib/email/test/test_email.py16
2 files changed, 17 insertions, 1 deletions
diff --git a/Lib/email/generator.py b/Lib/email/generator.py
index 02487e3..c6bfb70 100644
--- a/Lib/email/generator.py
+++ b/Lib/email/generator.py
@@ -391,6 +391,8 @@ class BytesGenerator(Generator):
if msg._payload is None:
return
if _has_surrogates(msg._payload):
+ if self._mangle_from_:
+ msg._payload = fcre.sub(">From ", msg._payload)
self.write(msg._payload)
else:
super(BytesGenerator,self)._handle_text(msg)
diff --git a/Lib/email/test/test_email.py b/Lib/email/test/test_email.py
index 95dc4af..352b9b1 100644
--- a/Lib/email/test/test_email.py
+++ b/Lib/email/test/test_email.py
@@ -20,7 +20,7 @@ import email
from email.charset import Charset
from email.header import Header, decode_header, make_header
from email.parser import Parser, HeaderParser
-from email.generator import Generator, DecodedGenerator
+from email.generator import Generator, DecodedGenerator, BytesGenerator
from email.message import Message
from email.mime.application import MIMEApplication
from email.mime.audio import MIMEAudio
@@ -1298,6 +1298,20 @@ Blah blah blah
self.assertEqual(len([1 for x in s.getvalue().split('\n')
if x.startswith('>From ')]), 2)
+ def test_mangled_from_with_bad_bytes(self):
+ source = textwrap.dedent("""\
+ Content-Type: text/plain; charset="utf-8"
+ MIME-Version: 1.0
+ Content-Transfer-Encoding: 8bit
+ From: aaa@bbb.org
+
+ """).encode('utf-8')
+ msg = email.message_from_bytes(source + b'From R\xc3\xb6lli\n')
+ b = BytesIO()
+ g = BytesGenerator(b, mangle_from_=True)
+ g.flatten(msg)
+ self.assertEqual(b.getvalue(), source + b'>From R\xc3\xb6lli\n')
+
# Test the basic MIMEAudio class
class TestMIMEAudio(unittest.TestCase):