(Is the Org source for the C/C++/D Babel syntax[1] committed somewhere, BTW? I could not find it in the Org repo.) I'd like to say that all tests pass now, but I'm getting failures on master (even without my changes) for two other tests: > FAILED ob-tangle/jump-to-org > FAILED test-org-attach/dir [1] https://orgmode.org/worg/org-contrib/babel/languages/ob-doc-C.html