   (defun load-ess-on-demand ()
     (interactive)
     (use-package ess-site)
-    (use-package ess-smart-underscore)
+    (use-package ess-smart-equals)
     (use-package ess-R-object-popup)
     (use-package ess-R-data-view)
     )

    ess
    ess-R-data-view
    ess-R-object-popup
    ess-smart-underscore
    )
  "List of all packages to install and/or initialize. Built-in packages
which require an initialization must be listed explicitly in the list.")

         "msT" 'ess-eval-function-and-go
         "mst" 'ess-eval-function
         )
       (define-key ess-mode-map (kbd "<s-return>") 'ess-eval-line)
       (define-key inferior-ess-mode-map (kbd "C-j") 'comint-next-input)
       (define-key inferior-ess-mode-map (kbd "C-k") 'comint-previous-input))))

(defun ess/init-rainbow-delimiters ()
  (add-hook 'ess-mode-hook #'rainbow-delimiters-mode))

(defun ess/init-ess-smart-equals ()
  (add-hook 'ess-mode-hook 'ess-smart-equals-mode)
  (add-hook 'inferior-ess-mode-hook 'ess-smart-equals-mode))
