intuited

" Called with a command and a redirection target
"   (see `:help redir` for info on redirection targets)
" Note that since this is executed in function context,
"   in order to target a global variable for redirection you must prefix it with `g:`.
" EG call Redir('ls', '=>g:buffer_list')
funct! Redir(command, to)
  exec 'redir '.a:to
  exec a:command
  redir END
endfunct