" Thank you teacher Ruan !!
" http://www.ruanyifeng.com/blog/2018/09/vimrc.html
set number
set relativenumber
syntax on
set showcmd
filetype indent on
set autoindent
set cursorline
set hlsearch
set incsearch
set undofile
set visualbell

" 如果行尾有多余的空格（包括 Tab 键），该配置将让这些空格显示成可见的小方块。
set listchars=tab:»■,trail:■
set list

set backupdir=~/.vim/.backup//
set directory=~/.vim/.swp//
set undodir=~/.vim/.undo//