Re: win32 emacs 22.1 crashes in longlines mode + outline minor mode

[martin rudalics]

> 1. Open text file
>
> 2.
>
> M-x longlines-mode
>
> M-x longlines-show-hard-newlines

At the time I'm here the buffer is already modified since modification
hooks are not inhibited in `longlines-show-hard-newlines', thus calling
`longlines-after-change-function' which subsequently causes to run
`longlines-post-command-function' which runs `longlines-show-region' a
second time _without_ saving the buffer-modified state though, ...

The attached patch should handle this.

*** longlines.el.~1.40.~        Fri Nov  2 09:54:54 2007
--- longlines.el        Wed Nov 14 09:42:18 2007
***************
*** 220,226 ****
    (let* ((pmin (min beg end))
           (pmax (max beg end))
           (pos (text-property-not-all pmin pmax 'hard nil))
!          (inhibit-read-only t))
      (while pos
        (put-text-property pos (1+ pos) 'display
                           (copy-sequence longlines-show-effect))
--- 220,227 ----
    (let* ((pmin (min beg end))
           (pmax (max beg end))
           (pos (text-property-not-all pmin pmax 'hard nil))
!        (inhibit-read-only t)
!        (inhibit-modification-hooks t))
      (while pos
        (put-text-property pos (1+ pos) 'display
                           (copy-sequence longlines-show-effect))
***************
*** 230,239 ****
    "Make hard newlines invisible again."
    (interactive)
    (setq longlines-showing nil)
!   (let ((pos (text-property-not-all (point-min) (point-max) 'hard nil)))
      (while pos
        (remove-text-properties pos (1+ pos) '(display))
!       (setq pos (text-property-not-all (1+ pos) (point-max) 'hard nil)))))

  ;; Wrapping the paragraphs.

--- 231,245 ----
    "Make hard newlines invisible again."
    (interactive)
    (setq longlines-showing nil)
!   (let ((pos (text-property-not-all (point-min) (point-max) 'hard nil))
!       (buffer-undo-list t)
!       (mod (buffer-modified-p))
!       (inhibit-read-only t)
!       (inhibit-modification-hooks t))
      (while pos
        (remove-text-properties pos (1+ pos) '(display))
!       (setq pos (text-property-not-all (1+ pos) (point-max) 'hard nil)))
!     (set-buffer-modified-p mod)))

  ;; Wrapping the paragraphs.