Ensure that gnus-summary-attach-article finds the right articles

* lisp/gnus/gnus-msg.el (gnus-summary-attach-article): Before
iterating over the articles to attach, first close any open
article. Using `set-buffer' required `gnus-summary-select-article' to
re-set the buffer every time, meaning we never got off the original
article.

1 files changed, 6 insertions, 5 deletions

diff --git a/lisp/gnus/gnus-msg.el b/lisp/gnus/gnus-msg.el
index 466a62713ed..daaea3980b5 100644
--- a/lisp/gnus/gnus-msg.el
+++ b/lisp/gnus/gnus-msg.el
@@ -1985,13 +1985,14 @@ process-mark several articles, they will all be attached."
                                       buffers t nil nil (car buffers))))
       (gnus-summary-mail-other-window)
       (setq destination (current-buffer)))
+    (gnus-summary-expand-window)
     (gnus-summary-iterate n
       (gnus-summary-select-article)
-      (set-buffer destination)
-      ;; Attach at the end of the buffer.
-      (save-excursion
-        (goto-char (point-max))
-        (message-forward-make-body-mime gnus-original-article-buffer)))
+      (with-current-buffer destination
+       ;; Attach at the end of the buffer.
+       (save-excursion
+         (goto-char (point-max))
+         (message-forward-make-body-mime gnus-original-article-buffer))))
     (gnus-configure-windows 'message t)))
 
 (provide 'gnus-msg)