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14.7 Languages

Code blocks in the following languages are supported.

Language Identifier Language Identifier
Asymptote asymptote Awk awk
Emacs Calc calc C C
C++ C++ Clojure clojure
CSS css ditaa ditaa
Graphviz dot Emacs Lisp emacs-lisp
gnuplot gnuplot Haskell haskell
Java java
Javascript js LaTeX latex
Ledger ledger Lisp lisp
Lilypond lilypond MATLAB matlab
Mscgen mscgen Objective Caml ocaml
Octave octave Org mode org
Oz oz Perl perl
Plantuml plantuml Python python
R R Ruby ruby
Sass sass Scheme scheme
GNU Screen screen shell sh
SQL sql SQLite sqlite

Language-specific documentation is available for some languages. If available, it can be found at

The option org-babel-load-languages controls which languages are enabled for evaluation (by default only emacs-lisp is enabled). This variable can be set using the customization interface or by adding code like the following to your emacs configuration.

The following disables emacs-lisp evaluation and enables evaluation of R code blocks.
      '((emacs-lisp . nil)
        (R . t)))

It is also possible to enable support for a language by loading the related elisp file with require.

The following adds support for evaluating clojure code blocks.
     (require 'ob-clojure)