(help-mode-maybe): Set view-return-to-alist.

(help-return-method): New variable.
(print-help-return-message): Set help-return-method.

diff --git a/lisp/help.el b/lisp/help.el
index 86c2f75b852ff111d037a01250582d2718012962..41f8470fa20e9d3fb7a2ebf22738b08a3c6be9ef 100644 (file)
--- a/lisp/help.el
+++ b/lisp/help.el
@@ -129,7 +129,9 @@ Commands:
 
 (defun help-mode-maybe ()
   (if (eq major-mode 'fundamental-mode)
-      (help-mode)))
+      (help-mode))
+  (setq view-return-to-alist
+       (list (cons (selected-window) help-return-method))))
 
 (add-hook 'temp-buffer-show-hook 'help-mode-maybe)
 
@@ -228,6 +230,13 @@ If INSERT (the prefix arg) is non-nil, insert the message in the buffer."
                         key-desc
                         (if (symbolp defn) defn (prin1-to-string defn)))))))))
 
+(defvar help-return-method nil
+  "What to do to \"exit\" the help buffer.
+This is a list
+ (WINDOW . t)              delete the selected window, go to WINDOW.
+ (WINDOW . quit-window)    do quit-window, then select WINDOW.
+ (WINDOW BUF START POINT)  display BUF at START, POINT, then select WINDOW.")
+
 (defun print-help-return-message (&optional function)
   "Display or return message saying how to restore windows after help command.
 Computes a message and applies the optional argument FUNCTION to it.
@@ -235,6 +244,7 @@ If FUNCTION is nil, applies `message' to it, thus printing it."
   (and (not (get-buffer-window standard-output))
        (let ((first-message
              (cond ((special-display-p (buffer-name standard-output))
+                    (setq help-return-method (cons (selected-window) t))
                     ;; If the help output buffer is a special display buffer,
                     ;; don't say anything about how to get rid of it.
                     ;; First of all, the user will do that with the window
@@ -243,10 +253,16 @@ If FUNCTION is nil, applies `message' to it, thus printing it."
                     ;; so we don't know whether its frame will be selected.
                     nil)
                    ((not (one-window-p t))
+                    (setq help-return-method
+                          (cons (selected-window) 'quit-window))
                     "Type \\[switch-to-buffer-other-window] RET to restore the other window.")
                    (pop-up-windows
+                    (setq help-return-method (cons (selected-window) t))
                     "Type \\[delete-other-windows] to remove help window.")
                    (t
+                    (setq help-return-method
+                          (list (selected-window) (window-buffer)
+                                (window-start) (window-point)))
                     "Type \\[switch-to-buffer] RET to remove help window."))))
         (funcall (or function 'message)
                  (concat