el/dot-emacs.el: Add a heading for `m4'.

diff --git a/el/dot-emacs.el b/el/dot-emacs.el
index 776915c..92614ca 100644 (file)
--- a/el/dot-emacs.el
+++ b/el/dot-emacs.el
@@ -3971,6 +3971,8 @@ that character only to be normal punctuation.")
         (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
               '(0 mdw-punct-face)))))
 
+;; m4.
+
 (defun mdw-setup-m4 ()
 
   ;; Inexplicably, Emacs doesn't match braces in m4 mode.  This is very