(undo-tree-save-format-version . 1)
"d0b6aa104cdeac15e0a74c5ece8edd8bf0323bb6"
[nil nil nil nil (25198 56313 240353 344000) 0 nil]
([nil current ((1 . 5521) (t . 0)) nil (25198 56313 240349 186000) 0 nil])
nil