Max Froumentin <max@lapin-bleu.net> writes:

> I've been working on a patch, which I'll submit once I'll have tested
> it a bit more.  Basically it adds "multipart/signed" to
> gnus-buttonized-mime-types inside gnus-mime-display-security, since
> within that function it appears that verification has always been performed.

OK, the attached patch seems to work. Basically, it resets the
definition of gnus-buttonized-mime-types to nil, and in
gnus-mime-display-security, it wraps the body within a redefinition of
the variable:

  (let ((gnus-buttonized-mime-types 
         (if (or (eq mm-verify-option 'always) (eq mm-verify-option 'known))
             (append '("multipart/signed") gnus-buttonized-mime-types)
           gnus-buttonized-mime-types)))

Max.