"设置快捷以使用xshell的复制

 let g_copy_mode =

 function! CopyToggle()

     if g:g_copy_mode ==

         let g:g_copy_mode =

         set mouse=c

         set nonu

     else

         let g:g_copy_mode =

         set mouse=a

         set nu

     endif

 endfunction

 nmap <silent><F3> :call  CopyToggle()<CR>