+(defun gnus-group-prepare-flat-list-dead-predicate
+ (groups level mark predicate)
+ (let (group)
+ (if predicate
+ ;; This loop is used when listing groups that match some
+ ;; regexp.
+ (while (setq group (pop groups))
+ (when (funcall predicate group)
+ (gnus-add-text-properties
+ (point) (prog1 (1+ (point))
+ (insert " " mark " *: "
+ (gnus-group-name-decode group
+ (gnus-group-name-charset
+ nil group))
+ "\n"))
+ (list 'gnus-group (gnus-intern-safe group gnus-active-hashtb)
+ 'gnus-unread t
+ 'gnus-level level)))))))
+
+(defun gnus-group-prepare-flat-predicate (level predicate &optional lowest
+ dead-predicate)
+ "List all newsgroups with unread articles of level LEVEL or lower.
+If LOWEST is non-nil, list all newsgroups of level LOWEST or higher.
+If PREDICATE, only list groups which PREDICATE returns non-nil.
+If DEAD-PREDICATE, list dead groups which DEAD-PREDICATE returns non-nil."
+ (set-buffer gnus-group-buffer)
+ (let ((buffer-read-only nil)
+ (newsrc (cdr gnus-newsrc-alist))
+ (lowest (or lowest 1))
+ info clevel unread group params)
+ (erase-buffer)
+ ;; List living groups.
+ (while newsrc
+ (setq info (car newsrc)
+ group (gnus-info-group info)
+ params (gnus-info-params info)
+ newsrc (cdr newsrc)
+ unread (car (gnus-gethash group gnus-newsrc-hashtb)))
+ (and unread ; This group might be unchecked
+ (funcall predicate info)
+ (<= (setq clevel (gnus-info-level info)) level)
+ (>= clevel lowest)
+ (gnus-group-insert-group-line
+ group (gnus-info-level info)
+ (gnus-info-marks info) unread (gnus-info-method info))))
+
+ ;; List dead groups.
+ (and (>= level gnus-level-zombie) (<= lowest gnus-level-zombie)
+ (gnus-group-prepare-flat-list-dead-predicate
+ (setq gnus-zombie-list (sort gnus-zombie-list 'string<))
+ gnus-level-zombie ?Z
+ dead-predicate))
+ (and (>= level gnus-level-killed) (<= lowest gnus-level-killed)
+ (gnus-group-prepare-flat-list-dead-predicate
+ (setq gnus-killed-list (sort gnus-killed-list 'string<))
+ gnus-level-killed ?K dead-predicate))
+
+ (gnus-group-set-mode-line)
+ (setq gnus-group-list-mode (cons level t))
+ (gnus-run-hooks 'gnus-group-prepare-hook)
+ t))
+
+(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))
+ (gnus-group-prepare-flat-predicate (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))
+ (gnus-group-prepare-flat-predicate (or level gnus-level-subscribed)
+ #'(lambda (info)
+ (let ((marks (gnus-info-marks info)))
+ (assq 'dormant marks)))
+ lowest)
+ (goto-char (point-min))
+ (gnus-group-position-point))
+