Re: tex-font-lock-suscript may mark buffer as modified

[Richard Stallman]

This seems to fix it.  Does it give good results overall?

*** font-lock.el        27 Nov 2004 14:02:46 -0500      1.231
--- font-lock.el        06 Dec 2004 15:13:33 -0500      
***************
*** 958,964 ****
    (funcall font-lock-fontify-region-function beg end loudly))
  
  (defun font-lock-unfontify-region (beg end)
!   (funcall font-lock-unfontify-region-function beg end))
  
  (defun font-lock-default-fontify-buffer ()
    (let ((verbose (if (numberp font-lock-verbose)
--- 958,970 ----
    (funcall font-lock-fontify-region-function beg end loudly))
  
  (defun font-lock-unfontify-region (beg end)
!   (if (eq font-lock-unfontify-region-function
!         'font-lock-default-unfontify-region)
!       (font-lock-default-unfontify-region beg end)
!     ;; Some of these functions add or remove properties,
!     ;; so protect the buffer from that.
!     (save-buffer-state
!      (funcall font-lock-unfontify-region-function beg end))))
  
  (defun font-lock-default-fontify-buffer ()
    (let ((verbose (if (numberp font-lock-verbose)