Auto save file case redo<C-R> cmd can not use. about vim-workspace HOT 2 OPEN

function! s:Autosave(timed)
  if index(g:workspace_autosave_ignore, &filetype) != -1 || &readonly || mode() == 'c' || pumvisible()
    return
  endif

  let current_time = localtime()
  let s:last_update = get(s:, 'last_update', 0)
  let s:time_delta = current_time - s:last_update

  if a:timed == 0 || s:time_delta >= 1
    let s:last_update = current_time
    checktime  " checktime with autoread will sync files on a last-writer-wins basis.
    call s:UntrailSpaces()
    call s:UntrailTabs()
    silent! doautocmd BufWritePre %  " needed for soft checks
    silent! update  " only updates if there are changes to the file.
    if a:timed == 0 || s:time_delta >= g:workspace_autosave_au_updatetime
      silent! doautocmd BufWritePost %  " Periodically trigger BufWritePost.
    endif
  endif
endfunction

    call s:UntrailSpaces()
    call s:UntrailTabs()

let g:workspace_autosave = 1
let g:workspace_autosave_untrailspaces = 0
let g:workspace_autosave_untrailtabs = 0