(use-package undo-tree)
;; undo
(add-hook 'ruby-mode-hook 'undo-tree-mode)

(use-package undo-tree
  :init
  (add-hook 'ruby-mode-hook 'undo-tree-mode)
  :defer)


Convert undo tree into use-package format.
Convert undo tree into use-package format.

map7/emacs-config,map7/emacs-config,map7/emacs-config