(make-help-screen): Handle case where *Help* comes up in a separate frame.

lisp/help-macro.el

@@ -99,7 +99,8 @@ and then returns."
 		    ;; and where we execute the chosen help command.
 		    (local-map (make-sparse-keymap))
 		    (minor-mode-map-alist nil)
-		    config key char)
+		    (prev-frame (selected-frame))
+		    config new-frame key char)
 	       (unwind-protect
 		   (progn
 		     (setcdr local-map (, helped-map))
@@ -113,13 +114,20 @@ and then returns."
 			 (progn
 			   (setq config (current-window-configuration))
 			   (switch-to-buffer-other-window "*Help*")
+			   (if (not (eq (window-frame (selected-window))
+					prev-frame))
+			       (setq new-frame (window-frame (selected-window))
+				     config nil))
 			   (erase-buffer)
 			   (insert help-screen)
 			   (goto-char (point-min))
 			   (while (or (memq char (cons help-char '(?? ?\C-v ?\ ?\177 delete ?\M-v)))
+				      (eq (car-safe char) 'switch-frame)
 				      (equal key "\M-v"))
 			     (condition-case nil
 				 (progn
+				   (if (eq (car-safe char) 'switch-frame)
+				       (handle-switch-frame char))
 				   (if (memq char '(?\C-v ?\ ))
 				       (scroll-up))
 				   (if (or (memq char '(?\177 ?\M-v delete))
@@ -149,9 +157,12 @@ and then returns."
 				   (progn
 				     (set-window-configuration config)
 				     (setq config nil)))
-			       (setq overriding-local-map nil)
+			       (if new-frame
+				   (progn (iconify-frame new-frame)
+					  (setq new-frame nil)))
 			       (call-interactively defn))
 			   (ding)))))
+		 (if new-frame (iconify-frame new-frame))
 		 (if config
 		     (set-window-configuration config))))))
      ))