[Emacs-diffs] Changes to emacs/lisp/longlines.el,v

[Chong Yidong]

CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     Chong Yidong <cyd>      07/05/12 23:19:08

Index: longlines.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/longlines.el,v
retrieving revision 1.33
retrieving revision 1.34
diff -u -b -r1.33 -r1.34
--- longlines.el        21 Jan 2007 03:53:11 -0000      1.33
+++ longlines.el        12 May 2007 23:19:08 -0000      1.34
@@ -110,6 +110,7 @@
         (add-hook 'change-major-mode-hook 'longlines-mode-off nil t)
        (add-hook 'before-revert-hook 'longlines-before-revert-hook nil t)
         (make-local-variable 'buffer-substring-filters)
+        (make-local-variable 'longlines-auto-wrap)
        (set (make-local-variable 'isearch-search-fun-function)
             'longlines-search-function)
         (add-to-list 'buffer-substring-filters 'longlines-encode-string)
@@ -149,12 +150,10 @@
               (add-to-list 'message-indent-citation-function
                            'longlines-decode-region t)))
 
+       (add-hook 'after-change-functions 'longlines-after-change-function nil 
t)
+       (add-hook 'post-command-hook 'longlines-post-command-function nil t)
         (when longlines-auto-wrap
-          (auto-fill-mode 0)
-          (add-hook 'after-change-functions
-                    'longlines-after-change-function nil t)
-          (add-hook 'post-command-hook
-                    'longlines-post-command-function nil t)))
+          (auto-fill-mode 0)))
     ;; Turn off longlines mode
     (setq buffer-file-format (delete 'longlines buffer-file-format))
     (if longlines-showing
@@ -365,29 +364,27 @@
 ;; Auto wrap
 
 (defun longlines-auto-wrap (&optional arg)
-  "Turn on automatic line wrapping, and wrap the entire buffer.
-With optional argument ARG, turn off line wrapping."
+  "Toggle automatic line wrapping.
+With optional argument ARG, turn on line wrapping if and only if ARG is 
positive.
+If automatic line wrapping is turned on, wrap the entire buffer."
   (interactive "P")
-  (remove-hook 'after-change-functions 'longlines-after-change-function t)
-  (remove-hook 'post-command-hook 'longlines-post-command-function t)
-  (if arg
-      (progn (setq longlines-auto-wrap nil)
-             (message "Auto wrap disabled."))
-    (setq longlines-auto-wrap t)
-    (add-hook 'after-change-functions
-              'longlines-after-change-function nil t)
-    (add-hook 'post-command-hook
-              'longlines-post-command-function nil t)
+  (and (null arg)
+       (null longlines-auto-wrap)
+       (setq arg 1))
+  (if (> (prefix-numeric-value arg) 0)
     (let ((mod (buffer-modified-p)))
+       (setq longlines-auto-wrap t)
       (longlines-wrap-region (point-min) (point-max))
-      (set-buffer-modified-p mod))
-    (message "Auto wrap enabled.")))
+       (set-buffer-modified-p mod)
+       (message "Auto wrap enabled."))
+    (setq longlines-auto-wrap nil)
+    (message "Auto wrap disabled.")))
 
 (defun longlines-after-change-function (beg end len)
   "Update `longlines-wrap-beg' and `longlines-wrap-end'.
 This is called by `after-change-functions' to keep track of the region
 that has changed."
-  (unless undo-in-progress
+  (when (and longlines-auto-wrap (not undo-in-progress))
     (setq longlines-wrap-beg
           (if longlines-wrap-beg (min longlines-wrap-beg beg) beg))
     (setq longlines-wrap-end
@@ -396,7 +393,7 @@
 (defun longlines-post-command-function ()
   "Perform line wrapping on the parts of the buffer that have changed.
 This is called by `post-command-hook' after each command."
-  (when longlines-wrap-beg
+  (when (and longlines-auto-wrap longlines-wrap-beg)
     (if (or (eq this-command 'yank)
            (eq this-command 'yank-pop))
        (longlines-decode-region (point) (mark t)))