原文地址：http://www.2cto.com/os/201309/246271.html
" This must be first, beacuse it changes other options as a side effect.
set nocompatible " show line numbers
set number " display "-- INSERT --" when entering insert mode
set showmode " incremental search
set incsearch " highlight matching search terms
set hlsearch " set ic means case-insensitive search; noic means case-sensitive.
set noic " allow backspacing over any character insert mode
set backspace=indent,eol,start " do not wrap lines
set nowrap " set mouse to work in the console
" set mouse=a " keep 50 lines of command line history
set history= " show the cursor position
set ruler " save a backup file
set backup " the visual bell flashes the background instead of an audible bell.
set visualbell " set sensible defaults for different types of text files.
au filetype c set cindent tw=
au filetype sh set ai et sw= sts= noexpandtab
au filetype vim set ai et sw= sts= noexpandtab " indent new lines to match the current identation
set autoindent " don't replace tabs with spaces
set noexpandtab " use tabs at the start of a line, spaces elsewhere
set smarttab " show syntax highlighting
syntax on " show whitespace at the end of a line
highlight whitespaceEOF ctermbg=blue guibg=blue
match whitespaceEOF /\s\+$/ set tabstop=
set shiftwidth=
set cursorline