[Bug 685261] [NEW] emailed command in subject header is ignored

Public bug reported:
For example, a held message notification to the list owner/moderator contains an attached message/rfc822 part with subject "confirm <token>" and this message can be replied to with or without an "Approved: <password>" header/first body line to accept or discard the held message.
The code allows for an MUA possibly inserting 'Re:' or some l10n equivalent in the subject making it "Re: confirm <token>", but if the l10n equivalent contains a non-ascii character, the entire command is ignored and the message continues to be held.
** Affects: mailman Importance: Undecided Status: New
** Tags: mailman3

** Changed in: mailman Importance: Undecided => Low
** Changed in: mailman Status: New => Fix Committed
** Changed in: mailman Milestone: None => 2.1.15
** Changed in: mailman Assignee: (unassigned) => Mark Sapiro (msapiro)

Note that the committed fix assumes that the l10n of the 'Re:' prefix is properly RFC 2047 encoded. If the raw Subject: header contains non- ascii, the command in the subject will still be ignored.

** Also affects: mailman/3.0 Importance: Low Assignee: Mark Sapiro (msapiro) Status: Fix Committed
** Also affects: mailman/2.1 Importance: Undecided Status: New
** Also affects: mailman/2.2 Importance: Undecided Status: New
** Changed in: mailman/2.1 Status: New => Fix Committed
** Changed in: mailman/2.2 Status: New => Fix Committed
** Changed in: mailman/3.0 Status: Fix Committed => New
** Changed in: mailman/3.0 Assignee: Mark Sapiro (msapiro) => (unassigned)
** Changed in: mailman/2.2 Assignee: (unassigned) => Mark Sapiro (msapiro)
** Changed in: mailman/2.1 Assignee: (unassigned) => Mark Sapiro (msapiro)

** Changed in: mailman/3.0 Status: New => Confirmed
** Changed in: mailman/3.0 Milestone: 2.1.15 => 3.0.0b1
** Changed in: mailman/3.0 Assignee: (unassigned) => Barry Warsaw (barry)

** Changed in: mailman/3.0 Status: Confirmed => Fix Committed

** Changed in: mailman/3.0 Status: Fix Committed => Fix Released
participants (2)
-
Barry Warsaw
-
Mark Sapiro