From 7aa8eec2fbf6c79f2e1ec2dcbbdacea311389538 Mon Sep 17 00:00:00 2001
From: Chong Yidong <cyd@stupidchicken.com>
Date: Sun, 8 Jul 2007 18:05:53 +0000
Subject: [PATCH] (longlines-wrap-region): Avoid marking buffer as modified.
(longlines-auto-wrap, longlines-window-change-function): Remove unnecessary
calls to set-buffer-modified-p.
---
lisp/longlines.el | 29 ++++++++++++++---------------
1 file changed, 14 insertions(+), 15 deletions(-)
diff --git a/lisp/longlines.el b/lisp/longlines.el
index 149f69c9f26..b75adb4f0d9 100644
--- a/lisp/longlines.el
+++ b/lisp/longlines.el
@@ -223,16 +223,18 @@ With optional argument ARG, make the hard newlines invisible again."
"Wrap each successive line, starting with the line before BEG.
Stop when we reach lines after END that don't need wrapping, or the
end of the buffer."
- (setq longlines-wrap-point (point))
- (goto-char beg)
- (forward-line -1)
- ;; Two successful longlines-wrap-line's in a row mean successive
- ;; lines don't need wrapping.
- (while (null (and (longlines-wrap-line)
- (or (eobp)
- (and (>= (point) end)
- (longlines-wrap-line))))))
- (goto-char longlines-wrap-point))
+ (let ((mod (buffer-modified-p)))
+ (setq longlines-wrap-point (point))
+ (goto-char beg)
+ (forward-line -1)
+ ;; Two successful longlines-wrap-line's in a row mean successive
+ ;; lines don't need wrapping.
+ (while (null (and (longlines-wrap-line)
+ (or (eobp)
+ (and (>= (point) end)
+ (longlines-wrap-line))))))
+ (goto-char longlines-wrap-point)
+ (set-buffer-modified-p mod)))
(defun longlines-wrap-line ()
"If the current line needs to be wrapped, wrap it and return nil.
@@ -372,10 +374,9 @@ If automatic line wrapping is turned on, wrap the entire buffer."
(> (prefix-numeric-value arg) 0)
(not longlines-auto-wrap)))
(if arg
- (let ((mod (buffer-modified-p)))
+ (progn
(setq longlines-auto-wrap t)
(longlines-wrap-region (point-min) (point-max))
- (set-buffer-modified-p mod)
(message "Auto wrap enabled."))
(setq longlines-auto-wrap nil)
(message "Auto wrap disabled.")))
@@ -410,9 +411,7 @@ This is called by `post-command-hook' after each command."
This is called by `window-configuration-change-hook'."
(when (/= fill-column (- (window-width) window-min-width))
(setq fill-column (- (window-width) window-min-width))
- (let ((mod (buffer-modified-p)))
- (longlines-wrap-region (point-min) (point-max))
- (set-buffer-modified-p mod))))
+ (longlines-wrap-region (point-min) (point-max))))
;; Isearch
--
2.39.5