On Mon, 18 Oct 2010 21:15:42 +0200 Lars Magne Ingebrigtsen <larsi@gnus.org> wrote:

> Stephen Berman <stephen.berman@gmx.net> writes:
>
>> I don't think so: when I start Emacs with -Q, type `M-x gnus', 'y' to
>> continue despite having no news server set up, get to the Group buffer,
>> type `G f' to visit a file as a foreign group, and that file contains a
>> mail with an attached mail as described in my OP, and then follow the
>> steps in my OP, I get the same results as I reported in my OP.
>> Moreover, stepping through message-reply with edebug, I don't see how
>> this can be otherwise.
>
> Is `message-reply' called by hitting `RET' on a mail address in the
> article buffer?  I'm not able to reproduce this.

Either by hitting RET or clicking on the address (mouse-1 or mouse-2).
The call path is gnus-widget-press-button -> gnus-article-press-button
-> gnus-button-reply -> message-reply.  It's not just any mail address
that triggers the problem, but one in the header of an attached
forwarded email.  I've attached an example, with which I can reproduce
the problem starting with -Q as described above.  Do you see the problem
with this mail?

Steve Berman