Its magic 🧙‍♂️⭐

magic-oldfiles.vim

if has('viminfo') && !empty(&viminfo)
  " Ignore paths, such as :help files
  set viminfo+=r/usr/share/vim/vim81/doc
endif

set viminfofile=$HOME/.vim/viminfo

function! Oldfiles()
  rviminfo!
  enew
  execute "0put =v:oldfiles"
  normal! Gdd
  set buftype=nofile
  setlocal nomodifiable
  setlocal nobuflisted
  nnoremap <buffer> <CR> :e <C-r>=getline('.')<CR><CR><CR>:0<CR>
endfunction

nnoremap <leader>o :call Oldfiles()<CR>

if has('autocmd')
  augroup vimrc
    autocmd!
    autocmd BufReadPost * wviminfo " Oldfiles()
  augroup END
endif

" nnoremap <leader>o :call Oldfiles()<CR>