Re: [Orgmode] Debugger entered--Lisp error: (void-function -mode)

[David Maus]

At Mon, 22 Nov 2010 21:48:25 +0100,
Sébastien Vauban wrote:
> 
> Hello,
> 
> When having the following code in any Org page, I now have an error generated.
> 
> - If the code is in a =begin_src html= block, no problem.
> - If between a =begin_html=, see what I get.
> 
> * Some code
> 
> #+begin_html
> <script type="text/javascript" src="jquery-1.4.4.min.js"></script>
> <script type="text/javascript">
> $(document).ready(function () {
> $('<a class="backtotop" href="#top">^</a>')
>     .insertAfter('h2');
> $('<a id="top"></a>')
>     .prependTo('body');
> });
> </script>
> #+end_html
> 
> * Debug info
> 
> #+begin_src emacs-lisp
> Debugger entered--Lisp error: (void-function -mode)
>   -mode()
>   funcall(-mode)
>   (if (eq major-mode lang-mode) nil (funcall lang-mode))
>   (unless (eq major-mode lang-mode) (funcall lang-mode))
>   (save-current-buffer (set-buffer (get-buffer-create ...)) (delete-region 
> (point-min) (point-max)) (insert string) (unless (eq major-mode lang-mode) 
> (funcall lang-mode)) (font-lock-fontify-buffer) (setq pos (point-min)) (while 
> (setq next ...) (put-text-property ... ... ... ... org-buffer) (setq pos 
> next)))
>   (with-current-buffer (get-buffer-create (concat " org-src-fontification:" 
> ...)) (delete-region (point-min) (point-max)) (insert string) (unless (eq 
> major-mode lang-mode) (funcall lang-mode)) (font-lock-fontify-buffer) (setq 
> pos (point-min)) (while (setq next ...) (put-text-property ... ... ... ... 
> org-buffer) (setq pos next)))
>   (let* ((lang-mode ...) (string ...) (modified ...) (org-buffer ...) pos 
> next) (remove-text-properties start end (quote ...)) (with-current-buffer 
> (get-buffer-create ...) (delete-region ... ...) (insert string) (unless ... 
> ...) (font-lock-fontify-buffer) (setq pos ...) (while ... ... ...)) 
> (add-text-properties start end (quote ...)) (set-buffer-modified-p modified))
>   org-src-font-lock-fontify-block("" 27 287)
> #+end_src
> 
> I don't understand why. Maybe it will ring a bell to you?
> 

I cannot reproduce this on


Org-mode version 7.3 (release_7.3.123.g950be)

GNU Emacs 23.2.1 (i486-pc-linux-gnu, GTK+ Version 2.20.1) of
 2010-11-03 on potassium, modified by Debian

It looks like some problem with the font-locking: I suspect you have
`org-fontify-natively' set to a non-nil value and for whatever reason
Org tries to fontify the #+begin_html as a source block with the
language beeing the empty string.

I have no idea about how font-locking works, but one thing for sure:
The regexp in `org-fontify-meta-lines-in-blocks' does match
a #+begin_html statement and the matching group used to determine the
language (it's 7) returns an empty string.

Best,
  -- David

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