+(defun gnus-group-list-cached (level &optional lowest)
+ "List all groups with cached articles.
+If the prefix LEVEL is non-nil, it should be a number that says which
+level to cut off listing groups.
+If LOWEST, don't list groups with level lower than LOWEST.
+
+This command may read the active file."
+ (interactive "P")
+ (when level
+ (setq level (prefix-numeric-value level)))
+ (when (or (not level) (>= level gnus-level-zombie))
+ (gnus-cache-open))
+ (funcall gnus-group-prepare-function
+ (or level gnus-level-subscribed)
+ #'(lambda (info)
+ (let ((marks (gnus-info-marks info)))
+ (assq 'cache marks)))
+ lowest
+ #'(lambda (group)
+ (or (gnus-gethash group
+ gnus-cache-active-hashtb)
+ ;; Cache active file might use "."
+ ;; instead of ":".
+ (gnus-gethash
+ (mapconcat 'identity
+ (split-string group ":")
+ ".")
+ gnus-cache-active-hashtb))))
+ (goto-char (point-min))
+ (gnus-group-position-point))
+
+(defun gnus-group-list-dormant (level &optional lowest)
+ "List all groups with dormant articles.
+If the prefix LEVEL is non-nil, it should be a number that says which
+level to cut off listing groups.
+If LOWEST, don't list groups with level lower than LOWEST.
+
+This command may read the active file."
+ (interactive "P")
+ (when level
+ (setq level (prefix-numeric-value level)))
+ (when (or (not level) (>= level gnus-level-zombie))
+ (gnus-cache-open))
+ (funcall gnus-group-prepare-function
+ (or level gnus-level-subscribed)
+ #'(lambda (info)
+ (let ((marks (gnus-info-marks info)))
+ (assq 'dormant marks)))
+ lowest
+ 'ignore)
+ (goto-char (point-min))
+ (gnus-group-position-point))
+
+(defun gnus-group-listed-groups ()
+ "Return a list of listed groups."
+ (let (point groups)
+ (goto-char (point-min))
+ (while (setq point (text-property-not-all (point) (point-max)
+ 'gnus-group nil))
+ (goto-char point)
+ (push (symbol-name (get-text-property point 'gnus-group)) groups)
+ (forward-char 1))
+ groups))
+
+(defun gnus-group-list-plus (&optional args)
+ "List groups plus the current selection."
+ (interactive "P")
+ (let ((gnus-group-listed-groups (gnus-group-listed-groups))
+ (gnus-group-list-mode gnus-group-list-mode) ;; Save it.
+ func)
+ (push last-command-event unread-command-events)
+ (if (featurep 'xemacs)
+ (push (make-event 'key-press '(key ?A)) unread-command-events)
+ (push ?A unread-command-events))
+ (let (gnus-pick-mode keys)
+ (setq keys (if (featurep 'xemacs)
+ (events-to-keys (read-key-sequence nil))
+ (read-key-sequence nil)))
+ (setq func (lookup-key (current-local-map) keys)))
+ (if (or (not func)
+ (numberp func))
+ (ding)
+ (call-interactively func))))
+
+(defun gnus-group-list-flush (&optional args)
+ "Flush groups from the current selection."
+ (interactive "P")
+ (let ((gnus-group-list-option 'flush))
+ (gnus-group-list-plus args)))
+
+(defun gnus-group-list-limit (&optional args)
+ "List groups limited within the current selection."
+ (interactive "P")
+ (let ((gnus-group-list-option 'limit))
+ (gnus-group-list-plus args)))
+
+(defun gnus-group-mark-article-read (group article)
+ "Mark ARTICLE read."
+ (gnus-activate-group group)
+ (let ((buffer (gnus-summary-buffer-name group))
+ (mark gnus-read-mark))
+ (unless
+ (and
+ (get-buffer buffer)
+ (with-current-buffer buffer
+ (when gnus-newsgroup-prepared
+ (when (and gnus-newsgroup-auto-expire
+ (memq mark gnus-auto-expirable-marks))
+ (setq mark gnus-expirable-mark))
+ (setq mark (gnus-request-update-mark
+ group article mark))
+ (gnus-mark-article-as-read article mark)
+ (setq gnus-newsgroup-active (gnus-active group))
+ t)))
+ (gnus-group-make-articles-read group
+ (list article))
+ (when (gnus-group-auto-expirable-p group)
+ (gnus-add-marked-articles
+ group 'expire (list article))))))
+