Re: What's the best way to auto-sign some emails but not all?

Thanks for all the great ideas.  I have realized that there are probably
more ways to do this than there are Gnus users :-)

The discussion made me look closer at the code in question, which I
should have done in the first place. And I believe my problem is that
there are no hooks in the appropriate places.  Yanking the original
message happens very late, long after message-setup is finished.

Most of the suggestions depend on message-setup-hook in some way, making
them work and fail similar to my existing gnus-posting-styles setup. One
exception is gnus-alias which AFAIU can apply a new identity to an
existing message buffer.  But that's an interactive choice, which is
what I'm trying to avoid. After all, I could just run
mml-secure-message-sign if I wanted to.

So what I have ended up with is this ugly hack:

#+BEGIN_SRC emacs-lisp
(defun bjorn/message--yank-original-advice (arg)
  "Leave sign/encrypt mml tags untouched when yanking original"
  (when (looking-at "<#secure")
    (forward-line 1)))
(advice-add 'message--yank-original-internal :before #'bjorn/message--yank-original-advice)
#+END_SRC


which does the job for me when combined

       (body "<#secure method=pgpmime mode=sign>")

in the appropriate posting style(s).


Bjørn