to-address vs. to-list? (nndraft gets two articles)

[Steinar Bang <sb@dod.no>]

Platform: Intel PIII, debian testing, GNU Emacs 20.7.2,
	  Oort Gnus v0.06 (CVS from last week)

I tried posting to the nntp+news.gnus.org:gmane.os.cygwin group
yesterday.  I didn't get an error message, but today the article still
hadn't shown up.

So I used the technique described in
	<http://sources.redhat.com/lists.html#rbl-sucks>
to subscribe as a poster to cygwin@cygwin.com.  And then I put
	(to-list . "cygwin@cygwin.com")
in the group parameters of the group.

I resqued my article from the "*Sent..." and did an `a' in the group,
pasted in the Subject: and the body of the old article, and saved it.

When I was back in the *Group* buffer, I noticed that nndraft:drafts
had two articles, and not one.  So I opened the group and saw that I
had both a news articled with the gmane.os.cygwin, in the newsgroup
header, and a mail article with cygwin@cygwin.com in the to header.

So my questions are:
 1. is this the expected behaviour, and the news article doesn't mean
    anything?
 2. or is this a bug?
 3. or am I misinterpreting when the to-address and to-list values
    should be used?

Thanx!


- Steinar