This is probably an old topic to this list but I'm at a loss of how to explain the issue to some my mailman list users.
Basically, they report messages coming through the list with odd line breaks. For example:
This is the text of their message. After it is received from the list it places a line break so that some lines only contain one word and a new line starts.
They feel it is the list doing this as they report the message looks fine when they send it to themselves.
As I understand it has to do with the display system and how the mail is composed. Some mail clients will send the paragraph as one long line with a line break at the end of it, while some mail clients put a new line at the end of each line. Then the display system may have less columns than than where the new line is placed at and thus results in the mangled text.
Does that sound right? Any feedback on the issue is welcomed and appreciated.
Thanks, Sean
Sean wrote:
At least in some cases, the problem is the original message is sent as RFC 3676 format="flowed". In this format, the sending MUA creates 'paragraphs' and arbitrarily wraps lines at space characters leaving trailing spaces in wrapped lines to indicate they should be joined to the following line. The receiving MUA is supposed to rejoin the flowed lines and then wrap them to its own display width, but Mailman, in the process of adding message header and/or footer, and in the process of scrubbing (if scrub-nondigest is Yes), removes the format="flowed" parameter from the Content-Type: header, so the receiving MUA thinks the format is "fixed".
I am currently testing a fix for this problem. See the bug report at <https://sourceforge.net/tracker/index.php?func=detail&aid=1495122&group_id=103&atid=100103> for further information and a patch.
-- Mark Sapiro <msapiro@value.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
Sean wrote:
At least in some cases, the problem is the original message is sent as RFC 3676 format="flowed". In this format, the sending MUA creates 'paragraphs' and arbitrarily wraps lines at space characters leaving trailing spaces in wrapped lines to indicate they should be joined to the following line. The receiving MUA is supposed to rejoin the flowed lines and then wrap them to its own display width, but Mailman, in the process of adding message header and/or footer, and in the process of scrubbing (if scrub-nondigest is Yes), removes the format="flowed" parameter from the Content-Type: header, so the receiving MUA thinks the format is "fixed".
I am currently testing a fix for this problem. See the bug report at <https://sourceforge.net/tracker/index.php?func=detail&aid=1495122&group_id=103&atid=100103> for further information and a patch.
-- Mark Sapiro <msapiro@value.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
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