akatov/pretty-mode — pull request #41 by grettke (2014-08-03 15:25:21+00:00)
Title: Added support to R for NULL.

Tested:

GNU Emacs 24.3.1 (x86_64-apple-darwin13.2.0, Carbon Version 1.6.0 AppKit 1265.2) of 2014-07-03 on orion