Thanks Myles,
This is realy what I want. I have just to fix something (may be my org-version).
The variable org-export-before-processing-hook seems missing.
I have org-version 7.8.10 (with emacs 24.2.1)
Regards,
Mohame

2012/12/20 Myles English <mylesenglish@gmail.com>

mohamed writes:

> Myles,
> Thank you for this answer.
> I tried it with
> -------------------------------
> (add-to-list 'org-export-preprocess-hook
> 'my-export-delete-headlines-tagged-noheading)
> -------------------------------

Sorry, I should have said: add it to org-export-before-processing-hook,
so you use it like this:

#+begin_src emacs-lisp
(defun my-export-delete-headlines-tagged-noheading (backend)
  (dolist (hl (nreverse (org-element-map (org-element-parse-buffer 'headline)
                                         'headline
                                         'identity)))
    (when (member "noheading" (org-element-property :tags hl))
      (goto-char (org-element-property :begin hl))
      (delete-region (point) (progn (forward-line) (point))))))

(add-to-list 'org-export-before-processing-hook
             'my-export-delete-headlines-tagged-noheading)
#+end_src

Myles

>
>
> But I got some errors when exporting
>
> -----------------------------------------------------------------
> Exporting to LaTeX...  run-hooks: Wrong number of
> arguments: (lambda (backend) (dolist (hl (nreverse (org-element-map
> (org-element-parse-buffer (quote headline)) (quote headline) (quote identity))))
> (when (member "noheading" (org-element-property :tags hl)) (goto-char
> (org-element-property :begin hl)) (delete-region (point) (progn (forward-line)
> (point)))))), 0 (my-export-delete-headlines-tagged-noheading)
> -----------------------------------------------------------------
>
>
> I guess I have to use it in another way. My knowledge of lisp programming is
> very limited.
>
> Regards,
> Mohamed