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[bpt/emacs.git] / lisp / compare-w.el

diff --git a/lisp/compare-w.el b/lisp/compare-w.el
index 7e23c9e..3fda5f5 100644 (file)
--- a/lisp/compare-w.el
+++ b/lisp/compare-w.el
@@ -1,6 +1,7 @@
 ;;; compare-w.el --- compare text between windows for Emacs
 
-;; Copyright (C) 1986,1989,1993,1997,2003,2004 Free Software Foundation, Inc.
+;; Copyright (C) 1986, 1989, 1993, 1997, 2002, 2003, 2004,
+;;   2005 Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: convenience files
@@ -19,8 +20,8 @@
 
 ;; 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., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
 
 ;;; Commentary:
 
@@ -56,7 +57,8 @@ whitespace is considered to match, and is skipped."
 (defcustom compare-ignore-whitespace nil
   "*Non-nil means `compare-windows' ignores whitespace."
   :type 'boolean
-  :group 'compare-w)
+  :group 'compare-w
+  :version "22.1")
 
 (defcustom compare-ignore-case nil
   "*Non-nil means `compare-windows' ignores case differences."
@@ -88,7 +90,8 @@ be made buffer-local.
 If the value of this variable is `nil', then function `ding' is
 called to beep or flash the screen when points are mismatched."
   :type '(choice regexp function)
-  :group 'compare-w)
+  :group 'compare-w
+  :version "22.1")
 
 (defcustom compare-windows-sync-string-size 32
   "*Size of string from one window that is searched in second window.
@@ -99,7 +102,8 @@ difference regions more coarse-grained.
 
 The default value 32 is good for the most cases."
   :type 'integer
-  :group 'compare-w)
+  :group 'compare-w
+  :version "22.1")
 
 (defcustom compare-windows-recenter nil
   "*List of two values, each of which is used as argument of
@@ -109,23 +113,20 @@ matching points side-by-side.
 The value `(-1 0)' is useful if windows are split vertically,
 and the value `((4) (4))' for horizontally split windows."
   :type '(list sexp sexp)
-  :group 'compare-w)
+  :group 'compare-w
+  :version "22.1")
 
 (defcustom compare-windows-highlight t
   "*Non-nil means compare-windows highlights the differences."
   :type 'boolean
-  :group 'compare-w)
+  :group 'compare-w
+  :version "22.1")
 
-(defface compare-windows-face
-  '((((class color) (min-colors 88) (background light))
-     (:background "paleturquoise"))
-    (((class color) (min-colors 88) (background dark))
-     (:background "paleturquoise4"))
-    (((class color))
-     (:background "turquoise3"))
-    (t (:underline t)))
+(defface compare-windows
+  '((t :inherit lazy-highlight))
   "Face for highlighting of compare-windows difference regions."
-  :group 'compare-w)
+  :group 'compare-w
+  :version "22.1")
 
 (defvar compare-windows-overlay1 nil)
 (defvar compare-windows-overlay2 nil)
@@ -283,7 +284,8 @@ on third call it again advances points to the next difference and so on."
 ;; to be used when this function is called on second window.
 (defun compare-windows-sync-default-function ()
   (if (not compare-windows-sync-point)
-      (let* ((w2 (next-window (selected-window)))
+      (let* ((w1 (selected-window))
+             (w2 (next-window w1))
              (b2 (window-buffer w2))
              (point-max2 (with-current-buffer b2 (point-max)))
              (op2 (window-point w2))
@@ -326,7 +328,8 @@ on third call it again advances points to the next difference and so on."
           ;; use closest matching points (i.e. points with minimal sum)
           (setq p12 (cdr (assq (apply 'min (mapcar 'car p12s)) p12s)))
           (goto-char (car p12))
-          (compare-windows-highlight op1 (car p12) op2 (cadr p12) b2))
+          (compare-windows-highlight op1 (car p12) (current-buffer) w1
+                                     op2 (cadr p12) b2 w2))
         (setq compare-windows-sync-point (or (cadr p12) t)))
     ;; else set point in the second window to the pre-calculated value
     (if (numberp compare-windows-sync-point)
@@ -334,18 +337,20 @@ on third call it again advances points to the next difference and so on."
     (setq compare-windows-sync-point nil)))
 
 ;; Highlight differences
-(defun compare-windows-highlight (beg1 end1 beg2 end2 buf2)
+(defun compare-windows-highlight (beg1 end1 b1 w1 beg2 end2 b2 w2)
   (when compare-windows-highlight
     (if compare-windows-overlay1
-        (move-overlay compare-windows-overlay1 beg1 end1 (current-buffer))
-      (setq compare-windows-overlay1 (make-overlay beg1 end1 (current-buffer)))
-      (overlay-put compare-windows-overlay1 'face 'compare-windows-face)
+        (move-overlay compare-windows-overlay1 beg1 end1 b1)
+      (setq compare-windows-overlay1 (make-overlay beg1 end1 b1))
+      (overlay-put compare-windows-overlay1 'face 'compare-windows)
       (overlay-put compare-windows-overlay1 'priority 1))
+    (overlay-put compare-windows-overlay1 'window w1)
     (if compare-windows-overlay2
-        (move-overlay compare-windows-overlay2 beg2 end2 buf2)
-      (setq compare-windows-overlay2 (make-overlay beg2 end2 buf2))
-      (overlay-put compare-windows-overlay2 'face 'compare-windows-face)
+        (move-overlay compare-windows-overlay2 beg2 end2 b2)
+      (setq compare-windows-overlay2 (make-overlay beg2 end2 b2))
+      (overlay-put compare-windows-overlay2 'face 'compare-windows)
       (overlay-put compare-windows-overlay2 'priority 1))
+    (overlay-put compare-windows-overlay2 'window w2)
     ;; Remove highlighting before next command is executed
     (add-hook 'pre-command-hook 'compare-windows-dehighlight)))