New submission from Chris Bradley: When email.policy.SMTP.fold() attempts to wrap a line in which a chunk that does not contain a space is longer than the maximum line length, two things go wrong: - The second line does not begin with a space, creating an invalid header. - The space before the long chunk is stripped, causing the line break to occur in an invalid place.
In the attached test case, email.policy.SMTP.fold() is called on a line of the style: Content-Disposition: attachment; filename="<filename>" <filename> does not contain any spaces and increases in length with each pass. Everything works correctly when 'filename="<filename>"' fits onto one line. However, once it is longer than the maximum line length, the following happens: - the space after the semicolon is dropped - the line break often splits up the 'filename' keyword - the second line loses the initial whitespace ---------- files: test_long_mime_headers.py messages: 294875 nosy: chr...@emergence.com priority: normal severity: normal status: open title: email.policy.SMTP.fold() mangles long headers versions: Python 3.5 Added file: http://bugs.python.org/file46917/test_long_mime_headers.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30532> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
