How do I override the default tabindent for Ruby in Vim?

Question

I'm using Janus for vim and am really liking it, but I can't seem to get my preferred tabstop of 4 working right. This is in my .vimrc

set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab

Later on I have

filetype plugin indent on

But all of my ruby files keep using the default version of 2, which I just don't like. I've tried following the instructions on this page, including creating a ruby.vim file in the after folder (and in the indent folder that janus created). I've added:

au FileType ruby set softtabstop=4 tabstop=4 shiftwidth=4

to my .vimrc, but none of those work.

I can manually call set tabstop, etc from command mode, which works, but that's not a great solution.

What's missing?

Answer 1

Xavier T's comment provided the answer, but since he didn't actually make an answer, here it is:

Can you try :verbose set tabstop sw softtabstop expandtab ?. It should tell which script is modifying your value of 4.

This lead me to see that autoload/rails.vim was what was setting the tab spacing back.