New submission from Ralph Corderoy: Class mailbox.MMDF supports the MMDF-mail-spool file format. This is a file with zero or more records, each starts and ends with a line of four ASCII SOHs. Within those two lines is an email in RFC 5532 format, i.e. a headers section followed by an optional body. There is no "From_" header before the headers section as used by mbox format.
https://docs.python.org/3/library/mailbox.html#mmdf references http://www.tin.org/bin/man.cgi?section=5&topic=mmdf that explains this clearly and gives an example spool file; there is no "From_" header. mailbox.MMDF documents it produces a From_ header and does so. This is wrong. It's wrong in Python 2 too. >>> import mailbox as mb >>> f = mb.MMDF('mail.spool') >>> f.add('Subject: Python Bug.\nFrom: b...@hunter.com\n\nEnds.\n') 0 >>> f.close() >>> print(repr(open('mail.spool').read())) '\x01\x01\x01\x01\nFrom MAILER-DAEMON Mon May 22 10:14:02 2017\nSubject: Python Bug.\nFrom: b...@hunter.com\n\nEnds.\n\n\x01\x01\x01\x01\n' >>> Other MMDF-handling software other than tin(1), e.g. http://www.nongnu.org/nmh/, neither produces a From_ header for MMDF, nor handles one being present. ---------- components: Library (Lib) messages: 294138 nosy: ralph.corderoy priority: normal severity: normal status: open title: mailbox.MMDF wrongly adds From_ header to file type: behavior versions: Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30428> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com