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From: Suvayu Ali <fatkasuvayu+linux@gmail.com>
Subject: Re: Export to LaTeX and Beamer
Date: Mon, 15 Jul 2013 11:49:42 +0200
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To: Julien Cubizolles <j.cubizolles@free.fr>
Cc: Org-mode Discussion <emacs-orgmode@gnu.org>

On Mon, Jul 15, 2013 at 11:40:34AM +0200, Suvayu Ali wrote:
> On Mon, Jul 15, 2013 at 11:15:16AM +0200, Julien Cubizolles wrote:
> > (defun jc-ignore-headline (contents backend info)
> >   "Ignore headlines with tag `ignoreheading'."
> >   (if (eq backend 'latex) (message contents)
> >     contents))

Here is an older version of the function:

 (defun my-org-export-remove-tagged-headlines (tag)
   (save-excursion
     (goto-char (point-min))
     (while (re-search-forward (concat ":" tag ":") nil t)
       (delete-region (point-at-bol) (point-at-eol)))))

Here I'm parsing the buffer in a pre-process hook.  In a filter, you
have to parse a string instead.  But the logic should be the same.

Hope this helps,

-- 
Suvayu

Open source is the future. It sets us free.