Add 2010 to copyright years.

[bpt/emacs.git] / lisp / scroll-bar.el

diff --git a/lisp/scroll-bar.el b/lisp/scroll-bar.el
index 5fce473..c28a417 100644 (file)
--- a/lisp/scroll-bar.el
+++ b/lisp/scroll-bar.el
@@ -1,17 +1,17 @@
 ;;; scroll-bar.el --- window system-independent scroll bar support
 
 ;; Copyright (C) 1993, 1994, 1995, 1999, 2000, 2001, 2002, 2003,
-;;   2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+;;   2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: hardware
 
 ;; 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
@@ -19,9 +19,7 @@
 ;; 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:
 
@@ -96,7 +94,7 @@ This is nil while loading `scroll-bar.el', and t afterward.")
                                              scroll-bar-mode)))))
 
 (defcustom scroll-bar-mode default-frame-scroll-bars
-  "*Specify whether to have vertical scroll bars, and on which side.
+  "Specify whether to have vertical scroll bars, and on which side.
 Possible values are nil (no scroll bars), `left' (scroll bars on left)
 and `right' (scroll bars on right).
 To set this variable in a Lisp program, use `set-scroll-bar-mode'
@@ -119,15 +117,15 @@ Setting the variable with a customization buffer also takes effect."
   "Toggle display of vertical scroll bars on all frames.
 This command applies to all frames that exist and frames to be
 created in the future.
-With a numeric argument, if the argument is negative,
-turn off scroll bars; otherwise, turn on scroll bars."
+With a numeric argument, if the argument is positive
+turn on scroll bars; otherwise turn off scroll bars."
   (interactive "P")
 
   ;; Tweedle the variable according to the argument.
-  (set-scroll-bar-mode (if (if (null flag) 
+  (set-scroll-bar-mode (if (if (null flag)
                               (not scroll-bar-mode)
                             (setq flag (prefix-numeric-value flag))
-                            (or (not (numberp flag)) (>= flag 0)))
+                            (or (not (numberp flag)) (> flag 0)))
                           (or previous-scroll-bar-mode
                               default-frame-scroll-bars))))
 
@@ -158,7 +156,7 @@ Horizontal scroll bars aren't implemented yet."
 \f
 ;;;; Buffer navigation using the scroll bar.
 
-;;; This was used for up-events on button 2, but no longer.
+;; This was used for up-events on button 2, but no longer.
 (defun scroll-bar-set-window-start (event)
   "Set the window start according to where the scroll bar is dragged.
 EVENT should be a scroll bar click or drag event."
@@ -166,8 +164,7 @@ EVENT should be a scroll bar click or drag event."
   (let* ((end-position (event-end event))
         (window (nth 0 end-position))
         (portion-whole (nth 2 end-position)))
-    (save-excursion
-      (set-buffer (window-buffer window))
+    (with-current-buffer (window-buffer window)
       (save-excursion
        (goto-char (+ (point-min)
                      (scroll-bar-scale portion-whole
@@ -197,8 +194,7 @@ EVENT should be a scroll bar click or drag event."
         portion-start
         next-portion-start
         (current-start (window-start window)))
-    (save-excursion
-      (set-buffer (window-buffer window))
+    (with-current-buffer (window-buffer window)
       (setq portion-start (scroll-bar-drag-position portion-whole))
       (setq next-portion-start (max
                                (scroll-bar-drag-position next-portion-whole)
@@ -214,8 +210,7 @@ EVENT should be a scroll bar click or drag event."
   (let* ((start-position (event-start event))
         (window (nth 0 start-position))
         (portion-whole (nth 2 start-position)))
-    (save-excursion
-      (set-buffer (window-buffer window))
+    (with-current-buffer (window-buffer window)
       ;; Calculate position relative to the accessible part of the buffer.
       (goto-char (+ (point-min)
                    (scroll-bar-scale portion-whole
@@ -341,7 +336,7 @@ EVENT should be a scroll bar click."
 \f
 ;;;; Bindings.
 
-;;; For now, we'll set things up to work like xterm.
+;; For now, we'll set things up to work like xterm.
 (cond ((and (boundp 'x-toolkit-scroll-bars) x-toolkit-scroll-bars)
        (global-set-key [vertical-scroll-bar mouse-1]
                       'scroll-bar-toolkit-scroll))
@@ -360,5 +355,5 @@ EVENT should be a scroll bar click."
 \f
 (provide 'scroll-bar)
 
-;;; arch-tag: 6f1d01d0-0b1e-4bf8-86db-d491e0f399f3
+;; arch-tag: 6f1d01d0-0b1e-4bf8-86db-d491e0f399f3
 ;;; scroll-bar.el ends here