Vladimir Nikishkin <lockyw...@gmail.com> writes: >>> (add-to-list 'org-src-lang-modes '("f90" . fortran)) > > Language alignment is fine. What needs to be done is to make org-babel > use org-babel-execute:fortran for both begin_src fortran, and for > begin_src f90.
Yeah, my suggestion doesn't make sense given you said there is a f90-mode. Try two: (org-babel-make-language-alias "f90" "fortran") Assuming that works for you and is expected to work generally, it'd be good to add that to ob-fortran.el.