[Tickets #12952] Re: PGP/MIME signed message with user signature fails in thunderbird

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Ticket URL: http://bugs.horde.org/ticket/12952
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  Ticket             | 12952
  Updated By         | Michael Slusarz <slusarz at horde.org>
  Summary            | PGP/MIME signed message with user signature fails in
                     | thunderbird
  Queue              | IMP
  Version            | 6.1.6
  Type               | Bug
-State              | Unconfirmed
+State              | Feedback
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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Michael Slusarz <slusarz at horde.org> (2014-02-03 22:36) wrote:

http://tools.ietf.org/html/rfc3676#section-4.3

    There is a long-standing convention in Usenet news which also
    commonly appears in Internet mail of using "-- " as the separator
    line between the body and the signature of a message.  When
    generating a Format=Flowed message containing a Usenet-style
    separator before the signature, the separator line is sent as-is.
    This is a special case; an (optionally quoted or quoted and stuffed)
    line consisting of DASH DASH SP is neither fixed nor flowed.

IMP correctly sends this separator (i.e. in flowed mode, we do NOT add  
an additional space at the end of the line).