(gnus-update-read-articles): Remove duplicated article numbers on group exit.

diff --git a/lisp/gnus.el b/lisp/gnus.el
index 299abcb257eb26ffd7ca6515c34ea812a28dceac..7b89b24994fdc3160ebfe6eb8df4c4dcea56e909 100644 (file)
--- a/lisp/gnus.el
+++ b/lisp/gnus.el
@@ -12713,6 +12713,12 @@ Returns whether the updating was successful."
       (while (and dormant (< (car dormant) (car active)))
        (setq dormant (cdr dormant)))
       (setq unread (sort (append unselected unread) '<))
+      ;; Weed out duplicates.
+      (let ((un unread))
+       (while (cdr un)
+         (if (eq (car un) (car (cdr un)))
+             (setcdr un (cdr (cdr un)))
+           (setq un (cdr un)))))
       ;; Compute the ranges of read articles by looking at the list of
       ;; unread articles.  
       (while unread