;;; shadowfile.el --- automatic file copying
;; Copyright (C) 1993, 1994, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007 Free Software Foundation, Inc.
+;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
;; Author: Boris Goldowsky <boris@gnu.org>
;; Keywords: comm files
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This package helps you to keep identical copies of files in more than one
;; place - possibly on different machines. When you save a file, it checks
;; whether it is on the list of files with "shadows", and if so, it tries to
-;; copy it when you exit emacs (or use the shadow-copy-files command).
+;; copy it when you exit Emacs (or use the shadow-copy-files command).
;; Installation & Use:
;; them). After doing this once, everything should be automatic.
;; The lists of clusters and shadows are saved in a file called .shadows,
-;; so that they can be remembered from one emacs session to another, even
-;; (as much as possible) if the emacs session terminates abnormally. The
+;; so that they can be remembered from one Emacs session to another, even
+;; (as much as possible) if the Emacs session terminates abnormally. The
;; files needing to be copied are stored in .shadow_todo; if a file cannot
;; be copied for any reason, it will stay on the list to be tried again
;; next time. The .shadows file should itself have shadows on all your
;; .shadow_todo is local information and should have no shadows.
;; If you do not want to copy a particular file, you can answer "no" and
-;; be asked again next time you hit C-x 4 s or exit emacs. If you do not
+;; be asked again next time you hit C-x 4 s or exit Emacs. If you do not
;; want to be asked again, use shadow-cancel, and you will not be asked
;; until you change the file and save it again. If you do not want to
;; shadow that file ever again, you can edit it out of the .shadows
:group 'files)
(defcustom shadow-noquery nil
- "*If t, always copy shadow files without asking.
+ "If t, always copy shadow files without asking.
If nil \(the default), always ask. If not nil and not t, ask only if there
is no buffer currently visiting the file."
:type '(choice (const t) (const nil) (other :tag "Ask if no buffer" maybe))
:group 'shadow)
(defcustom shadow-inhibit-message nil
- "*If non-nil, do not display a message when a file needs copying."
+ "If non-nil, do not display a message when a file needs copying."
:type 'boolean
:group 'shadow)
(cons (car list) (shadow-remove-if func (cdr list))))
nil))
-(defun shadow-join (strings sep)
- "Concatenate elements of the list of STRINGS with SEP between each."
- (cond ((null strings) "")
- ((null (cdr strings)) (car strings))
- ((concat (car strings) " " (shadow-join (cdr strings) sep)))))
-
(defun shadow-regexp-superquote (string)
"Like `regexp-quote', but includes the ^ and $.
This makes sure regexp matches nothing but STRING."
;; Mostly for debugging.
"Interactive function to display shadows of a buffer."
(interactive)
- (let ((msg (shadow-join (mapcar (function cdr)
- (shadow-shadows-of (buffer-file-name)))
- " ")))
+ (let ((msg (mapconcat #'cdr (shadow-shadows-of (buffer-file-name)) " ")))
(message "%s"
(if (zerop (length msg))
"No shadows."
call it manually."
(interactive "P")
(if (not shadow-files-to-copy)
- (if (interactive-p)
+ (if (called-interactively-p 'interactive)
(message "No files need to be shadowed."))
(save-excursion
(map-y-or-n-p (function
(to (shadow-expand-cluster-in-file-name (cdr s))))
(when buffer
(set-buffer buffer)
- (save-restriction
- (widen)
- (condition-case i
- (progn
- (write-region (point-min) (point-max) to)
- (shadow-remove-from-todo s))
- (error (message "Shadow %s not updated!" (cdr s))))))))
+ (condition-case i
+ (progn
+ (write-region nil nil to)
+ (shadow-remove-from-todo s))
+ (error (message "Shadow %s not updated!" (cdr s)))))))
(defun shadow-shadows-of (file)
"Return copy operations needed to update FILE.
"Use \\[shadow-copy-files] to update shadows."))
(sit-for 1))
(shadow-write-todo-file)))
- nil) ; Return nil for write-file-hooks
+ nil) ; Return nil for write-file-functions
(defun shadow-remove-from-todo (pair)
"Remove PAIR from `shadow-files-to-copy'.
(defun shadow-save-todo-file ()
(if (and shadow-todo-buffer (buffer-modified-p shadow-todo-buffer))
- (save-excursion
- (set-buffer shadow-todo-buffer)
+ (with-current-buffer shadow-todo-buffer
(condition-case nil ; have to continue even in case of
(basic-save-buffer) ; error, otherwise kill-emacs might
(error ; not work!
(buffer-list))))
(yes-or-no-p "Modified buffers exist; exit anyway? "))
(or (not (fboundp 'process-list))
- ;; process-list is not defined on VMS.
+ ;; process-list is not defined on MSDOS.
(let ((processes (process-list))
active)
(while processes
(file-name-as-directory (shadow-expand-file-name "~"))))
(if (null shadow-info-file)
(setq shadow-info-file
- (shadow-expand-file-name "~/.shadows")))
+ (shadow-expand-file-name (convert-standard-filename "~/.shadows"))))
(if (null shadow-todo-file)
(setq shadow-todo-file
- (shadow-expand-file-name "~/.shadow_todo")))
+ (shadow-expand-file-name
+ (convert-standard-filename "~/.shadow_todo"))))
(if (not (shadow-read-files))
(progn
(message "Shadowfile information files not found - aborting")
(defalias 'shadow-orig-save-buffers-kill-emacs
(symbol-function 'save-buffers-kill-emacs))
(defalias 'save-buffers-kill-emacs 'shadow-save-buffers-kill-emacs))
- (add-hook 'write-file-hooks 'shadow-add-to-todo)
+ (add-hook 'write-file-functions 'shadow-add-to-todo)
(define-key ctl-x-4-map "s" 'shadow-copy-files)))
-(defun shadowfile-unload-hook ()
- (if (fboundp 'shadow-orig-save-buffers-kill-emacs)
- (fset 'save-buffers-kill-emacs
- (symbol-function 'shadow-orig-save-buffers-kill-emacs)))
- (remove-hook 'write-file-hooks 'shadow-add-to-todo))
-
-(add-hook 'shadowfile-unload-hook 'shadowfile-unload-hook)
+(defun shadowfile-unload-function ()
+ (substitute-key-definition 'shadow-copy-files nil ctl-x-4-map)
+ (when (fboundp 'shadow-orig-save-buffers-kill-emacs)
+ (fset 'save-buffers-kill-emacs
+ (symbol-function 'shadow-orig-save-buffers-kill-emacs)))
+ ;; continue standard unloading
+ nil)
(provide 'shadowfile)
-;;; arch-tag: e2f4cdd7-2bab-4def-9130-9e69b412b79e
+;; arch-tag: e2f4cdd7-2bab-4def-9130-9e69b412b79e
;;; shadowfile.el ends here