If you, like I did, ever wanted to use vim with more option, e.g. support for python, or ruby.. then you have to re-compile vim in order to use it in your Mac OS X. You can compile from source, or using Macports like me. You can also view several daily used command for macports in my blogpost here.

$ sudo port -v install vim +python

After finished, you can find that newest version of vim (compare to built-in version of vim), is located in: /opt/local/share/vim/ directory

Or you can find it using find command:

$ sudo find / -name "vim"

After that, you need to put the path into $PATH, because if you're not doing that, Terminal apps in Mac OS X will execute the default built-in vim. Also, you need to put it in the beginning of your path:

PATH=/opt/local/share:/opt/local/bin:/opt/local/sbin:$PATH

That's it. Close your Terminal window/ tab, and start a new one. Type "vim" on your shell, and you'll see that you already have the new version of vim. Enjoy! :)