(This article was first published on Shravan Vasishth's Slog (Statistics blog), and kindly contributed to R-bloggers)
This should be standard in Textmate, I don't know why one has to go through so many steps to get it working:http://gragusa.wordpress.com/2007/11/11/textmate-emacs-like-indentation-for-r-files/
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Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).