Install undo-tree mode

.config/emacs/init.el

@@ -32,6 +32,11 @@
 (use-package better-defaults
   :straight (:host nil :repo "https://git.sr.ht/~technomancy/better-defaults"))
 
+(use-package undo-tree
+  :init (global-undo-tree-mode)
+  :custom
+  (undo-tree-history-directory-alist '(("." . "~/.config/emacs/undo-tree"))))
+
 (use-package magit
   :bind (("C-x g" . magit-status)
          ("C-x M-g" . magit-list-repositories))