emacs-27 2cdf1fd: Fix filing messages when 'rmail-output-reset-deleted-flag' is non-nil

[Eli Zaretskii]

branch: emacs-27
commit 2cdf1fd261128976c5769b7959e7b98e5425a3fd
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    Fix filing messages when 'rmail-output-reset-deleted-flag' is non-nil
    
    * lisp/mail/rmailout.el (rmail-output): Fix off-by-one error in
    deciding when to advance to the next message under non-nil
    'rmail-output-reset-deleted-flag'.  (Bug#44839)
---
 lisp/mail/rmailout.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/mail/rmailout.el b/lisp/mail/rmailout.el
index 49531ea..cfde335 100644
--- a/lisp/mail/rmailout.el
+++ b/lisp/mail/rmailout.el
@@ -579,7 +579,7 @@ from a non-Rmail buffer.  In this case, COUNT is ignored."
                      (progn
                        (if rmail-delete-after-output
                            (rmail-delete-message))
-                       (if (> count 0)
+                       (if (>= count 0)
                            (let ((msgnum rmail-current-message))
                              (rmail-next-message 1)
                              (eq rmail-current-message (1+ msgnum)))))