Vim 的多文件操作方式

:h buffers
:ls
:bd
:b 3 
:h new-vim-server 

vim --servername VIM-SERVER route.rb
vim --servername VIM-SERVER --remote-silent route.rb 

set laststatus=2
set statusline=%F:\ %l
set hidden "in order to switch between buffers with unsaved change
map <s-tab> :bp<cr>
map <tab> :bn<cr>