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-rw-r--r--lisp/emacs-lisp/regexp-opt.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/regexp-opt.el b/lisp/emacs-lisp/regexp-opt.el
index ef752858a4c..40033180770 100644
--- a/lisp/emacs-lisp/regexp-opt.el
+++ b/lisp/emacs-lisp/regexp-opt.el
@@ -1,4 +1,4 @@
-;;; regexp-opt.el --- generate efficient regexps to match strings
+;;; regexp-opt.el --- generate efficient regexps to match strings -*- lexical-binding: t -*-
;; Copyright (C) 1994-2016 Free Software Foundation, Inc.