I think the way to do this is to use a function in org-export-before-processing-hook to add it if you don't find it.
you can still use org-ml to generate the string that gets inserted. I guess you would just go to the end of the buffer and insert it. John ----------------------------------- Professor John Kitchin (he/him/his) Doherty Hall A207F Department of Chemical Engineering Carnegie Mellon University Pittsburgh, PA 15213 412-268-7803 @johnkitchin http://kitchingroup.cheme.cmu.edu On Fri, Jul 30, 2021 at 8:18 PM Matt Price <mopto...@gmail.com> wrote: > Goal: > conditionally add a headline with content to parse tree using either > org-export-before-parsing-hook or org-export-filter-parse-tree-functions > > Explanation: > I use org-re-reveal to make lecture slides from subtrees. Often I forget > to add a heading with #+print_bibliography: and as a result org-cite does > not generate the bibliography, and my citations are not wrapped in links. > I'd like to search *either* the parse tree *or* the temporary export > buffer for the #+print_bibliography keyword, and if it's not found, add a > headline to the end of the subtree/parse-tree with the appropriate > information. > > I can easily generate the proper lisp object with the org-ml package: > > (org-ml-build-headline :title '("Sources") > (org-ml-build-section > (org-ml-build-property-drawer > (org-ml-build-node-property "CUSTOM_ID" > "bibliography")) > (org-ml-build-keyword "print_bibliography" "" ) > )) > > And if I want I can turn that into a string by wrapping it in > (org-ml-to-trimmed-string ...) > > However, I'm not sure how best to add it to the exported data. I believe > I can add a function to either org-export-before-parsing-hook or > org-export-filter-parse-tree-functions, but beyond that I'm a bit lost. > It's not immediately obvious how to find the last headline and append > another headline after that headline's section. Looking at the nesting > confuses me somewhat and I'm afraid I'll break the data structure. > > Has anyone done something like this before and do you have ideas? > > Thank you! >
