(global-set-key (kbd "C-, c") 'comment-region)
(global-set-key (kbd "C-, u") 'uncomment-region)
(global-set-key (kbd "C-, w") 'delete-trailing-whitespace)
(global-set-key (kbd "C-, r") 'revert-buffer)
(global-set-key (kbd "C-, K") 'kill-rectangle)
(global-set-key (kbd "C-, e") 'eval-region)
(global-set-key (kbd "C-, a") 'align-regexp)
(global-set-key (kbd "C-, s") 'delete-trailing-whitespace)