.vimrc

" Capture {{{
command!
      \ -nargs=1
      \ -complete=command
      \ Capture
      \ call Capture(<f-args>)

function! Capture(cmd)
  redir => result
  silent execute a:cmd
  redir END

  let bufname = 'Capture: ' . a:cmd
  new
  setlocal bufhidden=unload
  setlocal nobuflisted
  setlocal buftype=nofile
  setlocal noswapfile
  silent file `=bufname`
  silent put =result
  1,2delete _
endfunction
" }}}