set nowritebackup
set nobackup
set noswapfile
set ic
set hlsearch
syntax on
"colorscheme darkblue
set background=dark
"set autoindent
set termencoding=utf-8
set encoding=utf-8
set tabstop=4
set softtabstop=4
set shiftwidth=4
set ts=4
set expandtab
原文：http://www.cnblogs.com/shuly/p/5092451.html