I have been trying org-export with ox-trac for trac wiki format but ox-trac was developed for org version 8.x and I am running org version 9. Given that :export-block
is obsolete now, so the export fails. I have opened an issue on the ox-trac github development page but it appears that the development has ceased.
I am willing to upgrade it to v9, please help with some pointers to begin with.
org-export-define-derived-backend: Unknown keyword: :export-block
Here is the ox-trac.el, please see line:89 and line:150 Thanks.