Bugs item #1409455, was opened at 2006-01-18 14:09
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Category: Python Library
Group: Python 2.4
Status: Open
Resolution: None
Priority: 5
Submitted By: Mark Sapiro (msapiro)
Assigned to: Nobody/Anonymous (nobody)
Summary: email.Message.set_payload followed by bad result get_payload

Initial Comment:
Under certain circumstances, in particular when charset
is 'iso-8859-1', where msg is an email.Message() instance,

    msg.set_payload(text, charset)

'apparently' encodes the text as quoted-printable and
adds a

Content-Transfer-Encoding: quoted-printable

header to msg. I say 'apparently' because if one prints
msg or creates a Generator instance and writes msg to a
file, the message is printed/written as a correct,
quoted-printable encoded message, but

    text = msg._payload
or

    text = msg.get_payload()

gives the original text, not quoted-printable encoded, and

    text = msg.get_payload(decode=True)

gives a quoted-printable decoding of the original text
which is munged if the original text included '=' in
some ways.

This is causing problems in Mailman which are currently
worked around by flagging if the payload was set by
set_payload() and not subsequently 'decoding' in that
case, but it would be better if
set_payload()/get_payload() worked properly.

A script is attached which illustrates the problem.

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