;;; Directory Local Variables
;;; See Info node `(emacs) Directory Variables' for more information.

;; You might want to use
;;
;;   (put 'indent-tabs-mode 'permanent-local t)
;;
;; to ensure that it's not reset when you manually switch an .h file
;; that was automatically opened in c-mode to c++-mode.

((c++-mode
  (indent-tabs-mode))
 (c-mode
  (indent-tabs-mode))
 (nxml-mode
  (indent-tabs-mode)))