-;;; saveplace.el --- automatically save place in files.
+;;; saveplace.el --- automatically save place in files
-;; Copyright (C) 1993, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1993, 1994, 2001 Free Software Foundation, Inc.
-;; Author: Karl Fogel <kfogel@cs.oberlin.edu>
+;; Author: Karl Fogel <kfogel@red-bean.com>
;; Maintainer: FSF
;; Created: July, 1993
-;; Version: See variable `save-place-version'.
;; Keywords: bookmarks, placeholders
;; This file is part of GNU Emacs.
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
+;;; Commentary:
+
;; Automatically save place in files, so that visiting them later
;; (even during a different Emacs session) automatically moves point
;; to the saved position, when the file is first found. Uses the
;; Thanks to Stefan Schoef, who sent a patch with the
;; `save-place-version-control' stuff in it.
+;;; Code:
+
;; this is what I was using during testing:
;; (define-key ctl-x-map "p" 'toggle-save-place)
-(defconst save-place-version "1.4"
- "The version number of this release of saveplace. This is unrelated
-to the version of Emacs itself, except that they change colinearly.")
+(defgroup save-place nil
+ "Automatically save place in files."
+ :group 'data)
+
(defvar save-place-alist nil
"Alist of saved places to go back to when revisiting files.
rather than the beginning of the buffer.
This alist is saved between Emacs sessions.")
-(defvar save-place nil
+(defcustom save-place nil
"*Non-nil means automatically save place in each file.
This means when you visit a file, point goes to the last place
where it was when you previously visited the same file.
If you wish your place in any file to always be automatically saved,
simply put this in your `~/.emacs' file:
-\(setq-default save-place t\)")
+\(setq-default save-place t\)"
+ :type 'boolean
+ :require 'saveplace
+ :group 'save-place)
(make-variable-buffer-local 'save-place)
-(defvar save-place-file (convert-standard-filename "~/.emacs-places")
- "*Name of the file that records `save-place-alist' value.")
+(defcustom save-place-file (convert-standard-filename "~/.emacs-places")
+ "*Name of the file that records `save-place-alist' value."
+ :type 'file
+ :group 'save-place)
-(defvar save-place-version-control 'nospecial
+(defcustom save-place-version-control nil
"*Controls whether to make numbered backups of master save-place file.
It can have four values: t, nil, `never', and `nospecial'. The first
three have the same meaning that they do for the variable
`version-control', and the final value `nospecial' means just use the
-value of `version-control'.")
+value of `version-control'."
+ :type '(radio (const :tag "Unconditionally" t)
+ (const :tag "For VC Files" nil)
+ (const never)
+ (const :tag "Use value of `version-control'" nospecial))
+ :group 'save-place)
(defvar save-place-loaded nil
"Non-nil means that the `save-place-file' has been loaded.")
-(defvar save-place-limit nil
- "Maximum number of entries to retain in the list; nil means no limit.")
+(defcustom save-place-limit nil
+ "Maximum number of entries to retain in the list; nil means no limit."
+ :type '(choice (integer :tag "Entries" :value 1)
+ (const :tag "No Limit" nil))
+ :group 'save-place)
(defun toggle-save-place (&optional parg)
"Toggle whether to save your place in this file between sessions.
(or save-place-loaded (load-save-place-alist-from-file))
(if buffer-file-name
(progn
- (let ((cell (assoc buffer-file-name save-place-alist)))
+ (let ((cell (assoc buffer-file-name save-place-alist))
+ (position (if (not (eq major-mode 'hexl-mode))
+ (point)
+ (1+ (hexl-current-address)))))
(if cell
- (setq save-place-alist (delq cell save-place-alist))))
- (if save-place
- (setq save-place-alist
- (cons (cons buffer-file-name
- (if (not (eq major-mode 'hexl-mode))
- (point)
- (1+ (hexl-current-address))))
- save-place-alist))))))
+ (setq save-place-alist (delq cell save-place-alist)))
+ (if (and save-place
+ (not (= position 1))) ;; Optimize out the degenerate case.
+ (setq save-place-alist
+ (cons (cons buffer-file-name position)
+ save-place-alist)))))))
(defun save-place-alist-to-file ()
(let ((file (expand-file-name save-place-file)))
(message "Saving places to %s..." file)
(set-buffer (get-buffer-create " *Saved Places*"))
(delete-region (point-min) (point-max))
- (if (file-readable-p file)
- (insert-file-contents file))
- (delete-region (point-min) (point-max))
- (goto-char (point-min))
(print save-place-alist (current-buffer))
(let ((version-control
(cond
(delete-region (point-min) (point-max))
(insert-file-contents file)
(goto-char (point-min))
- (setq save-place-alist
+ (setq save-place-alist
(car (read-from-string
(buffer-substring (point-min) (point-max)))))
(setcdr s nil)
(setq count (1+ count)))
(setq s (cdr s))))))
-
+
(kill-buffer (current-buffer))
- (message "Loading places from %s...done" file)
- t)
- t)
+ (message "Loading places from %s...done" file)))
nil))))
(defun save-places-to-alist ()
(or save-place-loaded (load-save-place-alist-from-file))
(let ((cell (assoc buffer-file-name save-place-alist)))
(if cell
- (progn
- (or after-find-file-from-revert-buffer
- (goto-char (cdr cell)))
+ (progn
+ (or after-find-file-from-revert-buffer
+ (goto-char (cdr cell)))
;; and make sure it will be saved again for later
(setq save-place t)))))
(if save-place-loaded
(save-place-alist-to-file)))
-(add-hook 'find-file-hooks 'save-place-find-file-hook t)
+(add-hook 'find-file-hook 'save-place-find-file-hook t)
(add-hook 'kill-emacs-hook 'save-place-kill-emacs-hook)
(provide 'saveplace) ; why not...
+;;; arch-tag: 3c2ef47b-0a22-4558-b116-118c9ef454a0
;;; saveplace.el ends here
-
HCoop / bpt / emacs.git / blobdiff