From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric S Fraga <e.fraga@ucl.ac.uk>
Subject: Re: Should comments break paragraphs?
Date: Wed, 17 Jul 2013 21:18:48 +0100
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To: Nicolas Goaziou <n.goaziou@gmail.com>
Cc: emacs-orgmode@gnu.org

Nicolas Goaziou <n.goaziou@gmail.com> writes:

> Hello,
>
> Eric S Fraga <e.fraga@ucl.ac.uk> writes:
>
>> This little snippet works just fine for comment lines.  However, I tried
>> changing the regexp to one that matches an :ignoreheading: tag on a
>> headline.  This works when I do a LaTeX export but not an HTML one.  Why
>> would the behaviour be different in each case?
>
> It shouldn't. Would you mind sending your hook?

Actually, it works so sorry about the noise.  I just tried emacs -Q and
realised that one of my other customisations was getting in the way.

For the record, this is what I have which (almost) does what I want:

#+begin_src emacs-lisp
  (defun esf/remove-lines-with-ignore-heading-tag (backend)
    (message "Deleting lines with ignore heading tag")
    (delete-matching-lines "^\\*+.*[ \t]+[a-ZA-Z0-9:]*:ignoreheading:[a-ZA-Z0-9:]*$"))
  (add-hook 'org-export-before-processing-hook 'esf/remove-lines-with-ignore-heading-tag)
#+end_src

I say almost because I actually want to replace matching lines by "\n"
and not simply delete them (sort of going against the whole
thread... ;-).  But I'll figure this bit out -- good emacs lisp practice
for me!

thanks,
eric

-- 
: Eric S Fraga (0xFFFCF67D), Emacs 24.3.50.1, Org release_8.0.5-337-g9f3bed