Suvayu Ali <fatkasuvayu+linux <at> gmail.com> writes:
>
> On Tue, Mar 05, 2013 at 01:25:03PM -0500, Nick Dokos wrote:
> > Eric S Fraga <e.fraga <at> ucl.ac.uk> wrote:
> >
> > > Suvayu Ali <fatkasuvayu+linux <at> gmail.com> writes:
> > >
> > > [...]
> > >
> > > > Try using your function with a filter. This filter might work:
> > > > org-export-filter-headline-functions. Of course it goes without saying
> > > > you will have to update your function.
> > >
> > > Thanks Suvayu. It is this update that I need help with! The
> > > documentation of that variable is close to impenetrable to me (e.g. what
> > > is a /communication channel/?).
> > >
> >
> > Reading the commentary in ox.el might help, at least to shed light on
> > some terminology.
>
> As far as know, it is a property list returned by the parser. Look in
> lisp/ox.el:1094. Beyond that my understanding is also a bit hazy. I
> think I have gone through that bit of the comments at least once, but it
> is a little difficult to follow for me (my lack of understanding of lisp
> is probably to blame :-p).
If you just want the latex to have "\section{}" you can do this
#+BEGIN_SRC emacs-lisp
(defun org-latex-ignore-heading-filter-headline
(headline backend info)
"Strip headline from HEADLINE. Ignore BACKEND and INFO."
(replace-regexp-in-string
"^[\\]section\\[.*\\textsc{ignoreheading}}$"
"\\section{}" headline nil t))
#+END_SRC
#+BEGIN_SRC emacs-lisp
(require 'ox-latex)
(org-export-define-derived-backend latex3 latex
:filters-alist (
(:filter-headline .
org-latex-ignore-heading-filter-headline)))
#+END_SRC
then (org-export-to-buffer 'latex3 "a-buffer-name")
should do it.
The so-called 'headline' is actually a lot more than I would have thought.
If you use this filter instead:
#+BEGIN_SRC emacs-lisp
(defun filter-headline-show
(text back-end info)
(format "<hdln>%s</hdln>" text))
#+END_SRC
you will see that the headline --- enclosed in
<hdln> .... <\hdln>
will typically contain within it an entire "section" (in exporter
`:filter-section' terms - not latex's \section{})
FWIW, I defun'ed filters like the above for all of the filter functions that can
take (text backend info) as arguments. Then using a derived backend like the
above `latex3', I can see where the filterable elements are. It is trivial to
do, but if anyone is interested, I can post or upload somewhere.
Chuck
