Coding style for emacs

At the link:

http://www.postgresql.org/docs/8.1/static/source.html

It gives some style configuration code to put in the .emacs file.
However, when I do that, emacs doesn't appear to follow the style of the
postgresql source. For instance, inside a function definition emacs
always indents by 8 columns.

What emacs scripts do the hackers use? Is that documentation out of
date?

Regards,
Jeff Davis