+(deffoo nnagent-retrieve-headers (articles &optional group server fetch-old)
+ (let ((file (gnus-agent-article-name ".overview" group))
+ arts n first)
+ (save-excursion
+ (gnus-agent-load-alist group)
+ (setq arts (gnus-sorted-difference
+ articles (mapcar 'car gnus-agent-article-alist)))
+ ;; Assume that articles with smaller numbers than the first one
+ ;; Agent knows are gone.
+ (setq first (caar gnus-agent-article-alist))
+ (when first
+ (while (and arts (< (car arts) first))
+ (pop arts)))
+ (set-buffer nntp-server-buffer)
+ (erase-buffer)
+ (let ((file-name-coding-system nnmail-pathname-coding-system))
+ (nnheader-insert-nov-file file (car articles)))
+ (goto-char (point-min))
+ (gnus-parse-without-error
+ (while (and arts (not (eobp)))
+ (setq n (read (current-buffer)))
+ (when (> n (car arts))
+ (beginning-of-line))
+ (while (and arts (> n (car arts)))
+ (insert (format
+ "%d\t[Undownloaded article %d]\tGnus Agent\t\t\t\n"
+ (car arts) (car arts)))
+ (pop arts))
+ (when (and arts (= n (car arts)))
+ (pop arts))
+ (forward-line 1)))
+ (while arts
+ (insert (format
+ "%d\t[Undownloaded article %d]\tGnus Agent\t\t\t\n"
+ (car arts) (car arts)))
+ (pop arts))
+ (if (and fetch-old
+ (not (numberp fetch-old)))
+ t ; Don't remove anything.
+ (nnheader-nov-delete-outside-range
+ (if fetch-old (max 1 (- (car articles) fetch-old))
+ (car articles))
+ (car (last articles)))
+ t)
+ 'nov)))
+
+(deffoo nnagent-request-expire-articles (articles group &optional server force)
+ articles)
+
+(deffoo nnagent-request-group (group &optional server dont-check info)