Emacs: Add indent-defun

Found at: http://emacsredux.com/blog/2013/03/28/indent-defun/

emacs/init.org

@@ -524,6 +524,22 @@ them immediately, they take a little time to load.
   (eval-after-load "org" '(require 'org-init))
 #+END_SRC
 
+Found on [[http://emacsredux.com/blog/2013/03/28/indent-defun/][Indent defun - Emacs Redux]], indents a function. Should be
+just a tiny bit easier than going to the beginning of a function and
+then calling =indent-sexp=, which only works in lisp-like languages
+anyway.
+
+#+BEGIN_SRC emacs-lisp
+  (defun indent-defun ()
+    "Indent the current defun."
+    (interactive)
+    (save-excursion
+      (mark-defun)
+      (indent-region (region-beginning) (region-end))))
+
+  (global-set-key (kbd "C-M-z") 'indent-defun)
+#+END_SRC
+
 #+BEGIN_SRC emacs-lisp
   (eval-after-load "rainbow-mode" '(oni:rainbow-mode-init))
   (eval-after-load "smex" '(oni:smex-init))