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(highlight-changes-rotate-faces): Don't set modified flag of buffer.

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Use `inhibit-modification-hooks'.
This commit is contained in:
Chong Yidong 2007-06-04 23:39:06 +00:00
parent 7cfe53dc95
commit 05d6ece7a3
1 changed files with 31 additions and 11 deletions
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42
lisp/hilit-chg.el
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@ -790,17 +790,37 @@ this, eval the following in the buffer to be saved:
(interactive)
;; If not in active mode do nothing but don't complain because this
;; may be bound to a hook.
(if (eq highlight-changes-mode 'active)
(let ((after-change-functions nil))
;; ensure hilit-chg-list is made and up to date
(hilit-chg-make-list)
;; remove our existing overlays
(hilit-chg-hide-changes)
;; for each change text property, increment it
(hilit-chg-map-changes 'hilit-chg-bump-change)
;; and display them all if active
(if (eq highlight-changes-mode 'active)
(hilit-chg-display-changes))))
(when (eq highlight-changes-mode 'active)
(let ((modified (buffer-modified-p))
(inhibit-modification-hooks t))
;; The `modified' related code tries to combine two goals: (1) Record the
;; rotation in `buffer-undo-list' and (2) avoid setting the modified flag
;; of the current buffer due to the rotation. We do this by inserting (in
;; `buffer-undo-list') entries restoring buffer-modified-p to nil before
;; and after the entry for the rotation.
(unless modified
;; Install the "before" entry.
(setq buffer-undo-list
(cons '(apply restore-buffer-modified-p nil)
buffer-undo-list)))
(unwind-protect
(progn
;; ensure hilit-chg-list is made and up to date
(hilit-chg-make-list)
;; remove our existing overlays
(hilit-chg-hide-changes)
;; for each change text property, increment it
(hilit-chg-map-changes 'hilit-chg-bump-change)
;; and display them all if active
(if (eq highlight-changes-mode 'active)
(hilit-chg-display-changes)))
(unless modified
;; Install the "after" entry.
(setq buffer-undo-list
(cons '(apply restore-buffer-modified-p nil)
buffer-undo-list))
(restore-buffer-modified-p nil)))))
;; This always returns nil so it is safe to use in write-file-functions
nil)