Update copyright notices for 2013.

[bpt/emacs.git] / lisp / textmodes / text-mode.el

diff --git a/lisp/textmodes/text-mode.el b/lisp/textmodes/text-mode.el
index bb59bf6..d9ff04c 100644 (file)
--- a/lisp/textmodes/text-mode.el
+++ b/lisp/textmodes/text-mode.el
@@ -1,7 +1,7 @@
 ;;; text-mode.el --- text mode, and its idiosyncratic commands
 
-;; Copyright (C) 1985, 1992, 1994, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1992, 1994, 2001-2013 Free Software Foundation,
+;; Inc.
 
 ;; Maintainer: FSF
 ;; Keywords: wp
@@ -64,8 +64,7 @@ You can thus get the full benefit of adaptive filling
  (see the variable `adaptive-fill-mode').
 \\{text-mode-map}
 Turning on Text mode runs the normal hook `text-mode-hook'."
-  (make-local-variable 'text-mode-variant)
-  (setq text-mode-variant t)
+  (set (make-local-variable 'text-mode-variant) t)
   (set (make-local-variable 'require-final-newline)
        mode-require-final-newline)
   (set (make-local-variable 'indent-line-function) 'indent-relative))
@@ -82,18 +81,29 @@ Turning on Paragraph-Indent Text mode runs the normal hooks
   :abbrev-table nil :syntax-table nil
   (paragraph-indent-minor-mode))
 
-(defun paragraph-indent-minor-mode ()
+(define-minor-mode paragraph-indent-minor-mode
   "Minor mode for editing text, with leading spaces starting a paragraph.
 In this mode, you do not need blank lines between paragraphs when the
 first line of the following paragraph starts with whitespace, as with
 `paragraph-indent-text-mode'.
 Turning on Paragraph-Indent minor mode runs the normal hook
 `paragraph-indent-text-mode-hook'."
-  (interactive)
-  (set (make-local-variable 'paragraph-start)
-       (concat "[ \t\n\f]\\|" paragraph-start))
-  (set (make-local-variable 'indent-line-function) 'indent-to-left-margin)
-  (run-hooks 'paragraph-indent-text-mode-hook))
+  :initial-value nil
+  ;; Change the definition of a paragraph start.
+  (let ((ps-re "[ \t\n\f]\\|"))
+    (if (eq t (compare-strings ps-re nil nil
+                               paragraph-start nil (length ps-re)))
+        (if (not paragraph-indent-minor-mode)
+            (set (make-local-variable 'paragraph-start)
+                 (substring paragraph-start (length ps-re))))
+      (if paragraph-indent-minor-mode
+          (set (make-local-variable 'paragraph-start)
+               (concat ps-re paragraph-start)))))
+  ;; Change the indentation function.
+  (if paragraph-indent-minor-mode
+      (set (make-local-variable 'indent-line-function) 'indent-to-left-margin)
+    (if (eq indent-line-function 'indent-to-left-margin)
+        (set (make-local-variable 'indent-line-function) 'indent-region))))
 
 (defalias 'indented-text-mode 'text-mode)