I am not sure if it is related, but anyway...

MIMEText behaviour has changed from python 2.4 to 2.5.


# Python 2.4

>>> from email.MIMEText import MIMEText
>>> m = MIMEText(None, 'html', 'iso-8859-1')
>>> m.set_payload('abc ' * 50)
>>> print m
From nobody Thu Dec  6 12:52:40 2007
Content-Type: text/html; charset="iso-8859-1"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc=
 abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc ab=
c abc abc abc abc abc abc abc abc abc abc abc abc=20








# Python 2.5

>>> from email.MIMEText import MIMEText
>>> m = MIMEText(None, 'html', 'iso-8859-1')
>>> m.set_payload('abc ' * 50)
>>> print m
From nobody Thu Dec  6 14:46:07 2007
Content-Type: text/html; charset="iso-8859-1"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc
abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc
abc abc abc abc abc abc abc abc abc abc abc abc abc abc





However, if we initialize MIMEText with the text, we get the correct output:

# python 2.5

>>> from email.MIMEText import MIMEText
>>> m = MIMEText('abc ' * 50, 'html', 'iso-8859-1')
>>> print m
From nobody Thu Dec  6 13:01:17 2007
Content-Type: text/html; charset="iso-8859-1"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc=
 abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc abc ab=
c abc abc abc abc abc abc abc abc abc abc abc abc=20



If I want to set payload after MIMEText is already created, I need to
use this workaround::

#python 2.5
from email.MIMEText import MIMEText
m = MIMEText(None, 'html', 'iso-8859-1')
m.set_payload(m._charset.body_encode('abc' * 50))


PS: The issue's versions field is filled with "Python 2.4". Shouldn't it
be "Python 2.5" ?