Some remember doc

[bpt/emacs.git] / lisp / whitespace.el

diff --git a/lisp/whitespace.el b/lisp/whitespace.el
index 801cdc5..3208c57 100644 (file)
--- a/lisp/whitespace.el
+++ b/lisp/whitespace.el
@@ -1,6 +1,6 @@
 ;;; whitespace.el --- minor mode to visualize TAB, (HARD) SPACE, NEWLINE
 
-;; Copyright (C) 2000-2013 Free Software Foundation, Inc.
+;; Copyright (C) 2000-2014 Free Software Foundation, Inc.
 
 ;; Author: Vinicius Jose Latorre <viniciusjl@ig.com.br>
 ;; Maintainer: Vinicius Jose Latorre <viniciusjl@ig.com.br>
@@ -344,7 +344,7 @@
 ;; Thanks to Andreas Roehler <andreas.roehler@easy-emacs.de> for
 ;; indicating defface byte-compilation warnings.
 ;;
-;; Thanks to TimOCallaghan (EmacsWiki) for the idea about highlight
+;; Thanks to Tim O'Callaghan (EmacsWiki) for the idea about highlight
 ;; "long" lines.  See EightyColumnRule (EmacsWiki).
 ;;
 ;; Thanks to Yanghui Bian <yanghuibian@gmail.com> for indicating a new
@@ -1084,7 +1084,7 @@ See also `whitespace-style', `whitespace-newline' and
                (not (memq major-mode (cdr whitespace-global-modes)))
              (memq major-mode whitespace-global-modes)))
           (t nil))
-         ;; ...we have a display (we're running a batch job)
+         ;; ...we have a display (not running a batch job)
          (not noninteractive)
          ;; ...the buffer is not internal (name starts with a space)
          (not (eq (aref (buffer-name) 0) ?\ ))
@@ -1471,6 +1471,12 @@ documentation."
     ;; PROBLEM 6: 8 or more SPACEs after TAB
     (whitespace-cleanup-region (point-min) (point-max)))))
 
+(defun whitespace-ensure-local-variables ()
+  "Set `whitespace-indent-tabs-mode' and `whitespace-tab-width' locally."
+  (set (make-local-variable 'whitespace-indent-tabs-mode)
+       indent-tabs-mode)
+  (set (make-local-variable 'whitespace-tab-width)
+       tab-width))
 
 ;;;###autoload
 (defun whitespace-cleanup-region (start end)
@@ -1517,6 +1523,7 @@ documentation."
       ;; read-only buffer
       (whitespace-warn-read-only "cleanup region")
     ;; non-read-only buffer
+    (whitespace-ensure-local-variables)
     (let ((rstart           (min start end))
          (rend             (copy-marker (max start end)))
          (indent-tabs-mode whitespace-indent-tabs-mode)
@@ -2095,7 +2102,6 @@ resultant list will be returned."
 (defvar whitespace-display-table-was-local nil
   "Used to remember whether a buffer initially had a local display table.")
 
-
 (defun whitespace-turn-on ()
   "Turn on whitespace visualization."
   ;; prepare local hooks
@@ -2108,10 +2114,7 @@ resultant list will be returned."
        (if (listp whitespace-style)
           whitespace-style
         (list whitespace-style)))
-  (set (make-local-variable 'whitespace-indent-tabs-mode)
-       indent-tabs-mode)
-  (set (make-local-variable 'whitespace-tab-width)
-       tab-width)
+  (whitespace-ensure-local-variables)
   ;; turn on whitespace
   (when whitespace-active-style
     (whitespace-color-on)