(if force
(if (null articles)
(setcar (nthcdr 3 info)
- (delq (assq type (car marked)) (car marked)))
+ (gnus-delete-alist type (car marked)))
(setcdr m (gnus-compress-sequence articles t)))
(setcdr m (gnus-compress-sequence
(sort (nconc (gnus-uncompress-range (cdr m))