>>>>> "Lars" == Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

 Lars> The most likely suspects for pilfering are, uh, rmime and the
 Lars> mime-compose thing François mentioned.

AFAIR the TM composition is derivative of Umeda's mime.el (which I
think is assigned).  You might look at that (1995 vintage), but
obviously something of his would need one or two small tweaks.

Isn't W3 always a good suspect?  You can beat a confession out of it
to a surprising number of things.