[Mailman-Developers] modifying payload using same encoding and Content-Transfer-Encoding

Tue May 13 16:14:37 CEST 2014

Hi,

Thanks for your reply. Unfortunately it doesn't work. I don't know why.
I did read the doc many times, without the expected result.

>  See 
> <https://docs.python.org/2/library/email.message.html#email.message.Message.set_payload> 
> and the implicit 
> <https://docs.python.org/2/library/email.message.html#email.message.Message.set_charset>. 
>

My code is inside this custom handler. It works, but not for keeping the 
encoding.
https://github.com/Sylvain303/mailman-AttachmentMove/blob/master/AttachmentMove.py#L338

It could be related to this specific usage inside the recursive change…

To solve it, I've forced the encoding explicitly:

             msg.set_payload(new_content)
             del msg['content-transfer-encoding']
             encoders.encode_7or8bit(msg)

I hope it will handle it correctly.

This code outside mailman is working: took from 
http://bugs.python.org/issue1525919

from email.Message import Message
from email.Charset import Charset, QP
text = "="
msg = Message()
charset = Charset("utf-8")
charset.header_encoding = QP
charset.body_encoding = QP
msg.set_charset(charset)
msg.set_payload(text)
print msg.as_string()

I've tried with no success:

from email.Charset import Charset, QP, BASE64
[…]
             del msg['content-transfer-encoding']
             charset = Charset("utf-8")
             charset.header_encoding = BASE64
             charset.body_encoding = BASE64
             msg.set_charset(charset)
             msg.set_payload(new_content)

I got the output below.  But it's not base64… just the plain new_content 
I've produced.
I don't need the base64 encoding specially, just that the content match 
what the header is saying.

    MIME-Version: 1.0
    Content-Type: text/html; charset="utf-8"
    Content-Transfer-Encoding: base64

    <html>
       <head>[…]

If I call the encoding explicitly it works, in conjunction with 
msg.set_charset(charset), I got header Content-Transfer-Encoding: twice.

             msg.set_payload(new_content)
             encoders.encode_base64(msg)

Regards,
Sylvain.