;;; Edit files as root
;; https://emacsredux.com/blog/2013/04/21/edit-files-as-root/
(defun emacsredux-sudo-edit (&optional arg)
  "Edit currently visited file as root. With a prefix ARG prompt
   for a file to visit.  Will also prompt for a file to visit if
   current buffer is not visiting a file."
  (interactive "P")
  (if (or arg (not buffer-file-name))
      (find-file (concat "/sudo:root@localhost:"
                         (read-file-name "Find file(as root): ")))
    (find-alternate-file (concat "/sudo:root@localhost:" buffer-file-name))))