[issue4958] email/header.py ecre regular expression issue
report at bugs.python.org
Fri Jan 16 08:32:08 CET 2009
Gabriel Genellina <gagsl-py2 at yahoo.com.ar> added the comment:
Your example header is invalid. Excerpt from RFC2047 <http://
www.ietf.org/rfc/rfc2047.txt> section 5:
+ An 'encoded-word' MUST NOT be used in parameter of a MIME
Content-Type or Content-Disposition field, or in any structured
field body except within a 'comment' or 'phrase'.
Even in the places where an "encoded word" (the sequence =?...?=) is
allowed, it must always be surrounded by whitespace -- this is by
design in the RFC.
If you have many of those invalid headers, you'll have to "cook" the
output of decode_header, posibly detecting malformed sequences and
calling decode_header again with just the offending substring.
I don't think that Python should accept malformed headers - but if you
come to a good solution you may publish the recipe in the Python
I'd close this report as invalid.
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