Merged revisions 81675 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r81675 | r.david.murray | 2010-06-03 11:43:20 -0400 (Thu, 03 Jun 2010) | 10 lines

  #5610: use \Z not $ so we don't eat extra chars when body part ends with \r\n.

  If a body part ended with \r\n, feedparser, using '$' to terminate its
  search for the newline, would match on the \r\n, and think that it needed
  to strip two characters in order to account for the line end before the
  boundary.  That made it chop one too many characters off the end of
  the body part.  Using \Z makes the match correct.

  Patch and test by Tony Nelson.
........

3 files changed, 22 insertions, 1 deletions

diff --git a/Lib/email/feedparser.py b/Lib/email/feedparser.py
index afb02b3..163fada 100644
--- a/Lib/email/feedparser.py
+++ b/Lib/email/feedparser.py
@@ -28,7 +28,7 @@ from email import message
 
 NLCRE = re.compile('\r\n|\r|\n')
 NLCRE_bol = re.compile('(\r\n|\r|\n)')
-NLCRE_eol = re.compile('(\r\n|\r|\n)$')
+NLCRE_eol = re.compile('(\r\n|\r|\n)\Z')
 NLCRE_crack = re.compile('(\r\n|\r|\n)')
 # RFC 2822 $3.6.8 Optional fields.  ftext is %d33-57 / %d59-126, Any character
 # except controls, SP, and ":".
diff --git a/Lib/email/test/test_email.py b/Lib/email/test/test_email.py
index 350d0b0..6c23693 100644
--- a/Lib/email/test/test_email.py
+++ b/Lib/email/test/test_email.py
@@ -2590,6 +2590,24 @@ Here's the message body
         eq(headers, ['A', 'B', 'CC'])
         eq(msg.get_payload(), 'body')
 
+    def test_CRLFLF_at_end_of_part(self):
+        # issue 5610: feedparser should not eat two chars from body part ending
+        # with "\r\n\n".
+        m = (
+            "From: foo@bar.com\n"
+            "To: baz\n"
+            "Mime-Version: 1.0\n"
+            "Content-Type: multipart/mixed; boundary=BOUNDARY\n"
+            "\n"
+            "--BOUNDARY\n"
+            "Content-Type: text/plain\n"
+            "\n"
+            "body ending with CRLF newline\r\n"
+            "\n"
+            "--BOUNDARY--\n"
+          )
+        msg = email.message_from_string(m)
+        self.assertTrue(msg.get_payload(0).get_payload().endswith('\r\n'))
 
 
 class TestBase64(unittest.TestCase):
diff --git a/Misc/NEWS b/Misc/NEWS
index fee5682..a9cd9bd 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -71,6 +71,9 @@ C-API
 Library
 -------
 
+- Issue #5610: feedparser no longer eats extra characters at the end of
+  a body part if the body part ends with a \r\n.
+
 - Issue #8924: logging: Improved error handling for Unicode in exception text.
 
 - Fix codecs.escape_encode to return the correct consumed size.