Lars, if you are around. C-u G DEL on a group I've deleted in the
meantime. :-)

Debugger entered--Lisp error: (wrong-type-argument characterp "NONEXISTENT")
  mapconcat(identity ("NO" ("NONEXISTENT") "Mailbox" "doesn't" "exist:" "Naquadah.INBOX.feedrss") " ")
  nnimap-command("DELETE %S" "Naquadah.INBOX.feedrss")
  (car (nnimap-command "DELETE %S" (utf7-encode group)))
  (save-current-buffer (set-buffer (nnimap-buffer)) (car (nnimap-command "DELETE %S" ...)))
  (with-current-buffer (nnimap-buffer) (car (nnimap-command "DELETE %S" ...)))
  (progn (with-current-buffer (nnimap-buffer) (car ...)))
  (if (nnimap-possibly-change-group nil server) (progn (with-current-buffer ... ...)))
  (when (nnimap-possibly-change-group nil server) (with-current-buffer (nnimap-buffer) (car ...)))
  nnimap-request-delete-group("Naquadah.INBOX.feedrss" (4) "Mail")
  gnus-request-delete-group("Naquadah.INBOX.feedrss" (4))
  gnus-group-delete-group("Naquadah.INBOX.feedrss" (4))
  call-interactively(gnus-group-delete-group nil nil)

-- 
Julien Danjou
// ᐰ <julien@danjou.info>   http://julien.danjou.info