Part of my vimrc which sets indentation (tabs, spaces, etc.)

.vimrc-snip

" I'm using the following config to make my code look the same everywhere.

set bs=indent,eol,start               " allow backspacing over everything
set autoindent                        " enable auto-indentation
set tabstop=2                         " no. of spaces for tab in file
set shiftwidth=2                      " no. of spaces for step in autoindent
set softtabstop=2                     " no. of spaces for tab when editing
set expandtab                         " expand tabs into spaces
set smarttab                          " smart tabulation and backspace

" Then I use an additional block to set indentation for exceptions.

if has("autocmd")
  augroup styles
    autocmd!
    " Custom filetypes settings: Python, Shell, Go, JSON, Vagrant
    au FileType python,sh set tabstop=4 shiftwidth=4 softtabstop=4
    au FileType go set noexpandtab tabstop=8 shiftwidth=8 softtabstop=8
    au BufRead,BufNewFile *.json setfiletype javascript
    au BufRead,BufNewFile Vagrantfile setfiletype ruby
  augroup END
endif