Set Vim's shiftwidth and tabstop based on directory

Question

I have a project I'm working on currently where the coding standard is to use 2 space indentation. On other projects, however, I use 4 space indentation.

Is there an easy way to tell vim that all files within a certain directory should have a tabstop of 2 spaces?

Answer 1

Use an autocmd that matches the directory and sets whatever options you need:

au BufRead,BufNewFile,BufEnter /path/to/dir/* setlocal ts=2 sts=2 sw=2

This will apply to files in subdirectories as well.

As Ingo Karkat points out, such commands should use setlocal instead of set so as to be specific to buffers.