Remove incorrect uses of "modeline".

[bpt/emacs.git] / lisp / vc / diff.el

diff --git a/lisp/vc/diff.el b/lisp/vc/diff.el
index 9655ce6..6cfee52 100644 (file)
--- a/lisp/vc/diff.el
+++ b/lisp/vc/diff.el
@@ -1,6 +1,6 @@
-;;; diff.el --- run `diff'
+;;; diff.el --- run `diff'  -*- lexical-binding: t -*-
 
-;; Copyright (C) 1992, 1994, 1996, 2001-2011 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 1994, 1996, 2001-2012 Free Software Foundation, Inc.
 
 ;; Author: Frank Bresz
 ;; (according to authors.el)
@@ -30,6 +30,8 @@
 
 ;;; Code:
 
+(declare-function diff-setup-whitespace "diff-mode" ())
+
 (eval-when-compile (require 'cl))
 
 (defgroup diff nil
@@ -64,6 +66,8 @@ If optional args OLD-TEMP-FILE and/or NEW-TEMP-FILE are non-nil,
 delete the temporary files so named."
   (if old-temp-file (delete-file old-temp-file))
   (if new-temp-file (delete-file new-temp-file))
+  (diff-setup-whitespace)
+  (goto-char (point-min))
   (save-excursion
     (goto-char (point-max))
     (let ((inhibit-read-only t))
@@ -76,10 +80,10 @@ delete the temporary files so named."
 ;;;###autoload
 (defun diff (old new &optional switches no-async)
   "Find and display the differences between OLD and NEW files.
-When called interactively, read OLD and NEW using the minibuffer;
-the default for NEW is the current buffer's file name, and the
-default for OLD is a backup file for NEW, if one exists.
-If NO-ASYNC is non-nil, call diff synchronously.
+When called interactively, read NEW, then OLD, using the
+minibuffer.  The default for NEW is the current buffer's file
+name, and the default for OLD is a backup file for NEW, if one
+exists.  If NO-ASYNC is non-nil, call diff synchronously.
 
 When called interactively with a prefix argument, prompt
 interactively for diff switches.  Otherwise, the switches
@@ -144,11 +148,8 @@ specified in `diff-switches' are passed to the diff command."
       (buffer-enable-undo (current-buffer))
       (diff-mode)
       (set (make-local-variable 'revert-buffer-function)
-           (lexical-let ((old old) (new new)
-                         (switches switches)
-                         (no-async no-async))
-             (lambda (ignore-auto noconfirm)
-               (diff-no-select old new switches no-async (current-buffer)))))
+           (lambda (_ignore-auto _noconfirm)
+             (diff-no-select old new switches no-async (current-buffer))))
       (setq default-directory thisdir)
       (let ((inhibit-read-only t))
        (insert command "\n"))
@@ -156,12 +157,11 @@ specified in `diff-switches' are passed to the diff command."
          (let ((proc (start-process "Diff" buf shell-file-name
                                      shell-command-switch command)))
            (set-process-filter proc 'diff-process-filter)
-            (lexical-let ((old-alt old-alt) (new-alt new-alt))
-              (set-process-sentinel
-               proc (lambda (proc msg)
-                      (with-current-buffer (process-buffer proc)
-                        (diff-sentinel (process-exit-status proc)
-                                       old-alt new-alt))))))
+            (set-process-sentinel
+             proc (lambda (proc _msg)
+                    (with-current-buffer (process-buffer proc)
+                      (diff-sentinel (process-exit-status proc)
+                                     old-alt new-alt)))))
        ;; Async processes aren't available.
        (let ((inhibit-read-only t))
          (diff-sentinel