procmail recipe wanted: clearsigned -> detached signed mail

[Florian Weimer]

Christoph Hertel <c.hertel@usa.net> writes:

> a while ago (a year or so, maybe even on another ML, I'd be sorry for
> that :), in one of those clearsigned vs. detached/MIME-signed e-mail
> discussions, I read about a procmail recipe that rewrote a clearsigned
> e-mail in a MIME-message with a detached signature.

Do you mean a message in RFC 2015 as destination format?  This is not
possible because the RFC 2015 signature covers MIME Headers, but the
original signature doesn't.