Hi List,
assume I want to derive an exporter backend from ox-org.el, and there
are just a few new transcoder functions, so all other elements/object
should be exported as Org-syntax (with inherited function
`org-org-identity').
Using this example Org-snippet
#+begin_src org
* A1
Text *A1*
** A2
Text *A2*
* B1
Text *B1*
** B2
Text *B2*
#+end_src
I get something like this if I write a transcoder function for 'headline'
ignoring argument 'contents' (don't bother with the details please):
#+begin_src emacs-lisp
(org-data nil "(headline (title-string \"A1\"
alt-title-string \"A1\" category \"tmp5\" level 1 priority nil tags nil
todo-keyword nil quotedp nil archivedp nil commentedp nil footnote-secion-p
nil))
(headline (title-string \"B1\" alt-title-string \"B1\" category \"tmp5\" level
1 priority nil tags nil todo-keyword nil quotedp nil archivedp nil commentedp
nil footnote-secion-p nil)) ")
#+end_src
Only the two 1st level headlines are successfully transcoded, their content is
missing.
But when I use something like this in the headline transcode function
#+begin_src emacs-lisp
(format "(headline %S %s) "
[... return headline string ...]
contents)
#+end_src
I get the parse-tree structure as output instead of elements/object
in their original Org text syntax as expected:
#+begin_src emacs-lisp
(org-data nil "(headline (title-string \"A1\" alt-title-string \"A1\"
category \"tmp5\" level 1 priority nil tags nil todo-keyword nil
quotedp nil archivedp nil commentedp nil footnote-secion-p nil)
(section (#(\"Text *A1* \" 0 5 (:parent (paragraph (:begin 6 :end 16
:contents-begin 6 :contents-end 16 :post-blank 0 :post-affiliated 6
:parent (section (:begin 6 :end 16 :contents-begin 6 :contents-end 16
:post-blank 0 :parent (headline (:raw-value \"A1\" :begin 1 :end 32
:pre-blank 0 :contents-begin 6 :contents-end 32 :level 1 :priority nil
:tags [...]
#+end_src
Note that I have a simple filter-function for section that looks like this:
#+begin_src emacs-lisp
(defun org-iorg-data-filter-section-function (section backend info)
(format "(section (%S))" section))
#+end_src
I'm sure there is some misunderstanding on my side here. I would expect
that all elements/objects inside the section have already been
transcoded back to Org-syntax when this filter is applied, so I should
not see parse-tree structures in the output.
I had a look at other backends for inspiration on how to deal with
'contents' in my headline transcoder function, e.g.
#+begin_src emacs-lisp
(defun org-html-section (section contents info)
[...]
;; Build return value.
(format "<div class=\"outline-text-%d\" id=\"text-%s\">\n%s</div>"
class-num
(or (org-element-property :CUSTOM_ID parent) section-number)
contents)))))
#+end_src
but that looks to me just how I treated 'contents' above.
Any tips would be appreciated.
--
cheers,
Thorsten
