bdecode was already gone in email 5. This merge adds the test from

the trunk patch, and removes the last trace of bdecode, which was
a commented out call in message.py.

Merged revisions 78778 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r78778 | r.david.murray | 2010-03-07 21:04:06 -0500 (Sun, 07 Mar 2010) | 9 lines

  Issue #7143: get_payload used to strip any trailing newline from a
  base64 transfer-encoded payload *after* decoding it; it no longer does.
  email had a special method in utils, _bdecode, specifically to do this,
  so it must have served a purpose at some point, yet it is clearly wrong
  per RFC.  Fixed with Barry's approval, but no backport.  Email package
  minor version number is bumped, now version 4.0.1.

  Patch by Joaquin Cuenca Abela.
........

Lib/email/message.py

@@ -204,7 +204,6 @@ class Message:
                 if isinstance(payload, str):
                     payload = payload.encode('raw-unicode-escape')
                 return base64.b64decode(payload)
-                #return utils._bdecode(payload)
             except binascii.Error:
                 # Incorrect padding
                 pass

Lib/email/test/data/msg_10.txt

@@ -24,6 +24,13 @@ Content-Transfer-Encoding: Base64
 VGhpcyBpcyBhIEJhc2U2NCBlbmNvZGVkIG1lc3NhZ2Uu
 
 
+--BOUNDARY
+Content-Type: text/plain; charset="iso-8859-1"
+Content-Transfer-Encoding: Base64
+
+VGhpcyBpcyBhIEJhc2U2NCBlbmNvZGVkIG1lc3NhZ2UuCg==
+
+
 --BOUNDARY
 Content-Type: text/plain; charset="iso-8859-1"
 

Lib/email/test/test_email.py

@@ -204,8 +204,12 @@ class TestMessageAPI(TestEmailBase):
         # Subpart 3 is base64
         eq(msg.get_payload(2).get_payload(decode=True),
            b'This is a Base64 encoded message.')
-        # Subpart 4 has no Content-Transfer-Encoding: header.
+        # Subpart 4 is base64 with a trailing newline, which
+        # used to be stripped (issue 7143).
         eq(msg.get_payload(3).get_payload(decode=True),
+           b'This is a Base64 encoded message.\n')
+        # Subpart 5 has no Content-Transfer-Encoding: header.
+        eq(msg.get_payload(4).get_payload(decode=True),
            b'This has no Content-Transfer-Encoding: header.\n')
 
     def test_get_decoded_uu_payload(self):

Misc/ACKS

@@ -9,6 +9,7 @@ Without you, I would've stopped working on Python long ago!
 
 PS: In the standard Python distribution, this file is encoded in UTF-8.
 
+Joaquin Cuenca Abela
 David Abrahams
 Jim Ahlstrom
 Farhan Ahmad