Mangling lines with leading hyphen

[Tres Seaver]

Mailman seems to be mangling messages which contain lines with
leading hyphens. For instance, the attached message is the original
as sent from my MUA to the <email address hidden>, <email address hidden>,
and <email address hidden> lists. Those lists add a leading '- '
to lines using '---' as a REST title underbars, as well as REST unordered
list items.

Archive entries;

- https://mail.zope.org/pipermail/zope/2011-January/176108.html

- https://mail.zope.org/pipermail/zope-dev/2011-January/042340.html

- https://mail.zope.org/pipermail/zope-announce/2011-January/002256.html

In addition to hurting the readability, this mangling also destroys the PGP
signature on the mail.

[Tres Seaver (tseaver)]

Hmm, that isn't my original mail -- that is one I got from one of the mailing lists.

[Tres Seaver (tseaver)]

Sorry for the noise -- it appears that Enigmail is the culprit.

I was misled by the fact that the message as I thought I sent
it looked normal: that was Thunderbird hiding the hyphens injected
by Enigmail.

There is still some issue with PGP signatures getting messed
up, but that may be in gmane rather than Mailman.

[Tres Seaver (tseaver)]

(For the benefit of anybody finding this issue via search)

The behavior I am seeing is PGP "space stuffing" due to use of "inline PGP"
to sign the mail:

 http://josefsson.org/inline-openpgp-considered-harmful.html