Defining settings based on file ext/type.

Hi, I would like to know how to define file specific settings (based on file extension/type). I would prefer modifying my .vimrc file instead of language specific .vim files. I am trying to achieve something like- if file-extension is .c or .cpp # expand tabs to spaces set sw=4 ts=4

Associating file extension with filetype.

Hi, Apologies if this has been answered before (I couldn't find anywhere). How can I associate a file extension to a file type in my .vimrc file (e.g. .hpp extension to c++/cpp file)? Ram