Hi Marcin,
Marcin Borkowski <mb...@wmi.amu.edu.pl> writes:
> 1. How can I know (in org-html-underline, for instance) whether I am in
> a MYBLOCK or not?
I don't know whether this is the best approach, but given an element,
you can walk up its parents in the parse tree until you either reach a
MYBLOCK (in which case, you are in such a block) or the top of the tree
(in which case, you aren't).
Here's an approach I use in a custom backend[1] to do something similar.
The following function is used to identify paragraphs (or other
elements) that are within lists which have an #+ATTR_LINGUISTICS
declaration specifying a :package property. (Because it recursively
walks up the parse tree, this works even for paragraphs in
arbitrarily-nested sublists.)
#+BEGIN_SRC emacs-lisp
(defun org-linguistics-find-enclosing-pkg (element)
"Find the enclosing linguistics package of a (list) element during export."
(let ((pkg (org-export-read-attribute :attr_linguistics element
:package))
(parent (org-export-get-parent element)))
(cond
; return if we found a :package attribute on element
(pkg pkg)
; recurse on the parent if element has a parent but we found no
; :package attribute
(parent (org-linguistics-find-enclosing-pkg parent))
; otherwise, no :package attribute was found
(t nil))))
#+END_SRC
(In your case, a similar function might only need to return a boolean
value that indicates whether an element is inside a MYBLOCK, rather than
returning a string, as this function does.)
Then, in other code, I can treat paragraphs differentially based on
whether they are in a list with this :package attribute set, e.g.
#+BEGIN_SRC emacs-lisp
(defun some-function-that-handles-paragraphs (paragraph)
(let* ((enclosing-pkg (org-linguistics-find-enclosing-pkg paragraph))
; ...
)
; ....
(cond
((string= enclosing-pkg "gb4e")
; do something for paragraphs in lists with :package gb4e ...
)
((string= enclosing-pkg "linguex")
; do something for paragraphs in lists with :package linguex ...
)
(t
; do a default thing for paragraphs that are not in such lists
))))
#+END_SRC
Hope that's helpful!
Best,
Richard
[1] The backend is ox-linguistics, a package for writing
linguistics-style examples in Org:
https://github.com/wyleyr/ox-linguistics
