1 files changed, 3 insertions, 1 deletions

diff --git a/lisp/simple.el b/lisp/simple.el
index c43fe548c82..67c02665ea1 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -3749,6 +3749,7 @@ support pty association, if PROGRAM is nil."
 (define-derived-mode process-menu-mode tabulated-list-mode "Process Menu"
   "Major mode for listing the processes called by Emacs."
   (setq tabulated-list-format [("Process" 15 t)
+                               ("PID"      7 t)
                                ("Status"   7 t)
                                ("Buffer"  15 t)
                                ("TTY"     12 t)
@@ -3775,6 +3776,7 @@ Also, delete any process that is exited or signaled."
                (process-query-on-exit-flag p))
            (let* ((buf (process-buffer p))
                   (type (process-type p))
+                  (pid  (if (process-id p) (format "%d" (process-id p)) "--"))
                   (name (process-name p))
                   (status (symbol-name (process-status p)))
                   (buf-label (if (buffer-live-p buf)
@@ -3810,7 +3812,7 @@ Also, delete any process that is exited or signaled."
                                          (format " at %s b/s" speed)
                                        "")))))
                      (mapconcat 'identity (process-command p) " "))))
-             (push (list p (vector name status buf-label tty cmd))
+             (push (list p (vector name pid status buf-label tty cmd))
                    tabulated-list-entries))))))
 
 (defun process-menu-visit-buffer (button)