bug with followup in digest mode

[Donald Arseneau]

I'm wondering if this bug rings a bell and has been fixed since
gnus 21.1 (see headers for this message).  It is a pain to circumvent 
the package manager to install an up-to-date version, and I don't know 
why such an old version is packaged.

The situation is viewing email digests in digest mode (A D), and
follow-up to the email-list for one message (F). Then the "To:" 
address is (correctly) the list server, but ALSO (incorrectly)
any "Reply-to" addresses found in ANY MESSAGES in the digest.

In gnus-sum.el, in the definition of gnus-summary-enter-digest-group,
I see 

        (set-buffer gnus-original-article-buffer)
        ;; Have the digest group inherit the main mail address of
        ;; the parent article.
        (when (setq to-address (or (message-fetch-field "reply-to")
                                   (message-fetch-field "from")))
          (setq params (append
                        (list (cons 'to-address
                                    (funcall gnus-decode-encoded-word-function
                                             to-address))))))

so, without understanding, I would guess that message-fetch-field "reply-to"
is scanning the entire (digest) message, not just its headers.

Thanks for advice.

-- 
Donald Arseneau                          asnd@triumf.ca