[Emacs-diffs] emacs-25 fde0cd1: * lisp/saveplace.el (save-place-local-mode): New minor mode

[Stefan Monnier]

branch: emacs-25
commit fde0cd1adc004928a36e323b636c5f7d999fd7d3
Author: Stefan Monnier <address@hidden>
Commit: Stefan Monnier <address@hidden>

    * lisp/saveplace.el (save-place-local-mode): New minor mode
    
    (toggle-save-place): Define as obsolete alias.
    (save-place--setup-hooks): New function.
    (save-place-mode): Use it.
---
 lisp/saveplace.el |   59 +++++++++++++++++++++++-----------------------------
 1 files changed, 26 insertions(+), 33 deletions(-)

diff --git a/lisp/saveplace.el b/lisp/saveplace.el
index 0233a52..0230279 100644
--- a/lisp/saveplace.el
+++ b/lisp/saveplace.el
@@ -120,6 +120,25 @@ disabled, i.e., the position is recorded for all files."
 
 (declare-function dired-current-directory "dired" (&optional localp))
 
+(defun save-place--setup-hooks (add)
+  (cond
+   (add
+    (add-hook 'find-file-hook #'save-place-find-file-hook t)
+    (add-hook 'dired-initial-position-hook #'save-place-dired-hook)
+    (unless noninteractive
+      (add-hook 'kill-emacs-hook #'save-place-kill-emacs-hook))
+    (add-hook 'kill-buffer-hook #'save-place-to-alist))
+   (t
+    ;; We should remove the hooks, but only if save-place-mode
+    ;; is nil everywhere.  Is it worth the trouble, tho?
+    ;; (unless (or (default-value 'save-place-mode)
+    ;;             (cl-some <save-place-local-mode-p> (buffer-list)))
+    ;;   (remove-hook 'find-file-hook #'save-place-find-file-hook)
+    ;;   (remove-hook 'dired-initial-position-hook #'save-place-dired-hook)
+    ;;   (remove-hook 'kill-emacs-hook #'save-place-kill-emacs-hook)
+    ;;   (remove-hook 'kill-buffer-hook #'save-place-to-alist))
+    )))
+
 (define-obsolete-variable-alias 'save-place 'save-place-mode "25.1")
 ;;;###autoload
 (define-minor-mode save-place-mode
@@ -128,23 +147,14 @@ This means when you visit a file, point goes to the last 
place
 where it was when you previously visited the same file."
   :global t
   :group 'save-place
-  (cond
-   (save-place-mode
-    (add-hook 'find-file-hook 'save-place-find-file-hook t)
-    (add-hook 'dired-initial-position-hook 'save-place-dired-hook)
-    (unless noninteractive
-      (add-hook 'kill-emacs-hook 'save-place-kill-emacs-hook))
-    (add-hook 'kill-buffer-hook 'save-place-to-alist))
-   (t
-    (remove-hook 'find-file-hook 'save-place-find-file-hook t)
-    (remove-hook 'dired-initial-position-hook 'save-place-dired-hook)
-    (remove-hook 'kill-emacs-hook 'save-place-kill-emacs-hook)
-    (remove-hook 'kill-buffer-hook 'save-place-to-alist))))
+  (save-place--setup-hooks save-place-mode))
 
-(make-variable-buffer-local 'save-place-mode) ; Hysterical raisins.
+(make-variable-buffer-local 'save-place-mode)
 
+(define-obsolete-function-alias 'toggle-save-place
+  #'save-place-local-mode "25.1")
 ;;;###autoload
-(defun toggle-save-place (&optional parg) ;FIXME: save-place-local-mode!
+(define-minor-mode save-place-local-mode
   "Toggle whether to save your place in this file between sessions.
 If this mode is enabled, point is recorded when you kill the buffer
 or exit Emacs.  Visiting this file again will go to that position,
@@ -157,30 +167,13 @@ To save places automatically in all files, put this in 
your init
 file:
 
 \(save-place-mode 1)"
-  (interactive "P")
+  :variable save-place-mode
   (if (not (or buffer-file-name (and (derived-mode-p 'dired-mode)
                                      (boundp 'dired-subdir-alist)
                                     dired-subdir-alist
                                     (dired-current-directory))))
       (message "Buffer `%s' not visiting a file or directory" (buffer-name))
-    (setq save-place (if parg
-                         (> (prefix-numeric-value parg) 0)
-                       (not save-place)))
-    (cond
-     (save-place
-      (add-hook 'find-file-hook 'save-place-find-file-hook t)
-      (add-hook 'dired-initial-position-hook 'save-place-dired-hook)
-      (unless noninteractive
-        (add-hook 'kill-emacs-hook 'save-place-kill-emacs-hook))
-      (add-hook 'kill-buffer-hook 'save-place-to-alist))
-     (t
-      (remove-hook 'find-file-hook 'save-place-find-file-hook t)
-      (remove-hook 'dired-initial-position-hook 'save-place-dired-hook)
-      (remove-hook 'kill-emacs-hook 'save-place-kill-emacs-hook)
-      (remove-hook 'kill-buffer-hook 'save-place-to-alist)))
-    (message (if save-place
-                 "Place will be saved"
-               "No place will be saved in this file"))))
+    (save-place--setup-hooks save-place-mode)))
 
 (declare-function dired-get-filename "dired" (&optional localp 
no-error-if-not-filep))