Standardize #+BIBLIOGRAPHY line

[Jambunathan K <kjambunathan@gmail.com>]

(Fixed up the subject and CC line.)

As for #+ATTR_BACKEND lines, they *must* be prefixed with the citation
processor's name.

It is unlikely that there will be a convergence of what Org-wide
':citation-style' values are.  In that case, they can be converted to
citation-processor specific style.

#+ATTR_LATEX: :bib-style plain
#+ATTR_HTML: :bib2html-style apa
#+ATTR_ODT: :jabref-style chicago-author-date

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In ODT case, I translate (latex-frag ...) to (citation-reference ....)
I have the following defcustom to choose JabRef as the "citation
processor" for ODT backend.

If we standardize on this convention, one can for example choose JabRef
or Zotero as the citation processor for various backends.


    (defcustom org-odt-citation-transcoders
      '(ox-jabref-citation-reference . ox-jabref-bibliography)
      "Transcoders to handle citations."
      :type '(choice (const :tag "Don't process citations" nil)
                     (cons  :tag "Citation transcoders"
                            (function :tag "For \\cite{} fragments" :value ox-jabref-citation-reference)
                            (function :tag "For BIBLIOGRAPHY     " :value ox-jabref-bibliography)))
      :group 'org-export-odt
      :version "24.1")


You *may* want to wrap this aspect in to a tool.

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<- The following part is same as earlier message ->

Nicolas

I am finalizing JabRef support for ODT.  At *some* future point in time,
I will include ox-jabref.el (and all other patches) in official Emacs
distribution.

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Meanwhile, could you standardize the syntax for some `keyword' elements
so that they can be parse with `org-export-read-attribute'.

Currently, I am interested in BIBLIOGRAPHY.  You may also want to do the
same for #+toc: lines.


#+ATTR_ODT: :jabref-intext-filter chicago.ODF.text :jabref-reference-filter chicago.ODF.reference
#+ATTR_HTML: :bib2html-options "-a b -c -d"
#+BIBLIOGRAPHY:  :bib-file MyLibrary.bib :citation-style "chicago-note" :limit t

    :bib-file will be mandatory.  (It is basically the input database, need
    not *necessarily* be a .bib file.)

    :citation-style will be advisory.  Backends may choose to ignore or
    honor the style.

    :limit t can be supported by ODT via jabref.

You may also want to review the #+TOC settings, more for consistency
than anything else.

Instead of
        #+toc: headlines 4

we can have 
        #+toc: headlines :levels 4

or 
        #+toc: :type headlines :levels 4