;;; autorevert.el --- revert buffers when files on disk change
;; Copyright (C) 1997, 1998, 1999, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007 Free Software Foundation, Inc.
+;; 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
;; Author: Anders Lindgren <andersl@andersl.com>
;; Keywords: convenience
;; 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:
"Revert current buffer, if appropriate.
This is an internal function used by Auto-Revert Mode."
(when (or auto-revert-tail-mode (not (buffer-modified-p)))
- (let* ((buffer (current-buffer))
+ (let* ((buffer (current-buffer)) size
(revert
(or (and buffer-file-name
(not (file-remote-p buffer-file-name))
(file-readable-p buffer-file-name)
- (not (verify-visited-file-modtime buffer)))
+ (if auto-revert-tail-mode
+ (/= auto-revert-tail-pos
+ (setq size
+ (nth 7 (file-attributes buffer-file-name))))
+ (not (verify-visited-file-modtime buffer))))
(and (or auto-revert-mode
global-auto-revert-non-file-buffers)
revert-buffer-function
(push window eoblist)))
'no-mini t))
(if auto-revert-tail-mode
- (auto-revert-tail-handler)
+ (auto-revert-tail-handler size)
;; Bind buffer-read-only in case user has done C-x C-q,
;; so as not to forget that. This gives undesirable results
;; when the file's mode changes, but that is less common.
(when (or revert auto-revert-check-vc-info)
(vc-find-file-hook)))))
-(defun auto-revert-tail-handler ()
- (let ((size (nth 7 (file-attributes buffer-file-name)))
- (modified (buffer-modified-p))
+(defun auto-revert-tail-handler (size)
+ (let ((modified (buffer-modified-p))
(inhibit-read-only t) ; Ignore.
(file buffer-file-name)
(buffer-file-name nil)) ; Ignore that file has changed.
- (when (> size auto-revert-tail-pos)
+ (when (/= auto-revert-tail-pos size)
(run-hooks 'before-revert-hook)
(undo-boundary)
(save-restriction
(widen)
(save-excursion
(goto-char (point-max))
- (insert-file-contents file nil auto-revert-tail-pos size)))
+ (insert-file-contents file nil
+ (and (< auto-revert-tail-pos size)
+ auto-revert-tail-pos)
+ size)))
(run-hooks 'after-revert-hook)
(undo-boundary)
(setq auto-revert-tail-pos size)
(not (and auto-revert-stop-on-user-input
(input-pending-p))))
(let ((buf (car bufs)))
- (if (buffer-name buf) ; Buffer still alive?
+ (if (buffer-live-p buf)
(with-current-buffer buf
;; Test if someone has turned off Auto-Revert Mode in a
;; non-standard way, for example by changing major mode.