diff --git a/lisp/ibuf-ext.el b/lisp/ibuf-ext.el
index f5375612c34..4443383cdf5 100644
--- a/lisp/ibuf-ext.el
+++ b/lisp/ibuf-ext.el
@@ -347,10 +347,14 @@ the mode if ARG is omitted or nil."
    :modifier-p nil)
   (shell-command (concat command " "
 			 (shell-quote-argument
-			  (if buffer-file-name
-			      buffer-file-name
-			    (make-temp-file
-			     (substring (buffer-name) 0 (min 10 (length (buffer-name))))))))))
+			  (or buffer-file-name
+			      (let ((file
+				     (make-temp-file
+				      (substring
+				       (buffer-name) 0
+				       (min 10 (length (buffer-name)))))))
+				(write-region nil nil file nil 0)
+				file))))))
 
 ;;;###autoload (autoload 'ibuffer-do-eval "ibuf-ext")
 (define-ibuffer-op eval (form)
diff --git a/lisp/ibuffer.el b/lisp/ibuffer.el
index 9d23e64cd81..1295ed7a82d 100644
--- a/lisp/ibuffer.el
+++ b/lisp/ibuffer.el
@@ -2336,7 +2336,8 @@ FORMATS is the value to use for `ibuffer-formats'.
     (setq other-window-p t))
   (let ((buf (get-buffer-create (or name "*Ibuffer*"))))
     (if other-window-p
-	(funcall (if noselect (lambda (buf) (display-buffer buf t)) #'pop-to-buffer) buf)
+	(or (and noselect (display-buffer buf t))
+	    (pop-to-buffer buf t))
       (funcall (if noselect #'display-buffer #'switch-to-buffer) buf))
     (with-current-buffer buf
       (save-selected-window
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)