win32 emacs 22.1 crashes in longlines mode + outline minor mode

win32 emacs 22.1 crashes in longlines mode + outline minor mode

[Dmitry Bolshakov]

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Win xp

GNU Emacs 22.1.1 (i386-mingw-nt5.1.2600) of 2007-06-02 on RELEASE

 

1. Open text file

2.

M-x longlines-mode

M-x longlines-show-hard-newlines

M-x outline-minor-mode

M-x hide-entry

"An unhandled win32 exception occurred in emacs.exe [3780]"

 

With best regards

Dmitry Bolshakov

 


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* H1
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* H2
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* H3
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Re: win32 emacs 22.1 crashes in longlines mode + outline minor mode

[Juanma Barranquero]

On 11/13/07, Dmitry Bolshakov <dmitry.bolshakov@bridge-quest.com> wrote:

> "An unhandled win32 exception occurred in emacs.exe [3780]"

It does not happen in EMACS_22_BASE or the trunk.

             Juanma

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

[Jason Rumney]

Dmitry Bolshakov wrote:
>
> 1. Open text file
>
> 2.
>
> M-x longlines-mode
>
> M-x longlines-show-hard-newlines
>
> M-x outline-minor-mode
>
> M-x hide-entry
>
> “An unhandled win32 exception occurred in emacs.exe [3780]”
>

Thanks for the bug report. This appears to be the same bug as previously
reported:

http://lists.gnu.org/archive/html/emacs-devel/2007-09/msg01996.html
http://lists.gnu.org/archive/html/emacs-devel/2007-10/msg00339.html

If so, it has been fixed already. It would be good if you can try
building Emacs yourself from CVS (the EMACS_22_BASE branch), or try the
pretest for Emacs 22.2 when it comes out soon, to confirm that this is
the case before 22.2 is released.

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

[martin rudalics]

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 > 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.

[-- Attachment #2: longlines.patch --]
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*** 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.