.dir-locals.el

;; Per-directory local variables for GNU Emacs 23 and later.

;; Syntax: ((MODE (VAR . VAL) ...) ...)
;; MODE is a symbol like `c-mode', or `nil' for all modes.
((c-mode
  (indent-tabs-mode . nil)
  (c-basic-offset . 4))
 (c++-mode
  (indent-tabs-mode . nil)
  (c-basic-offset . 4))
 (java-mode
  (indent-tabs-mode . nil)
  (c-basic-offset . 4))
 (ruby-mode
  (ruby-indent-level . 4))
 (change-log-mode
  (indent-tabs-mode . nil)))