Re: gnus-message-archive-group not producing a Gcc header

[Dan Christensen <jdc@uwo.ca>]

To elaborate, I think the code should be changed to allow
gnus-message-archive-method to be nil (which should be the default), and
that the manual page Archived Messages should start with something like:

  To have your outgoing messages saved in an archive group, simply set
  the variable gnus-message-archive-group to the full group name,
  including the select method prefix.  For example,

    (setq gnus-message-archive-group "nnimap+imap.example.com:Sent")

And that should be enough for most users, especially those using imap.
Then the manual page could go on to more complicated set-ups:

  If you don't have an existing server that can be used for storing
  outgoing mail, see gnus-message-archive-server below.

  The variable gnus-message-archive group can also be set to:

  a list of strings
      ... [fill in the same list of possibilities]

  If you want to set-up a special server for archiving messages,
  you can use the gnus-message-archive-method variable.
  ... fill in more here ...

But this last part is so complicated.  The default nnfolder "archive"
server created on first use, the gnus-update-message-archive-method
variable, etc.  Maybe it can be avoided?  Maybe just give sample code the
user can use to add an nnfolder server to gnus-secondary-select-methods, 
and then they can use the it in the -archive-group variable?

Dan