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-rw-r--r--lisp/emacs-lisp/eieio-opt.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/eieio-opt.el b/lisp/emacs-lisp/eieio-opt.el
index edf4d34b649..e65f424cbab 100644
--- a/lisp/emacs-lisp/eieio-opt.el
+++ b/lisp/emacs-lisp/eieio-opt.el
@@ -1,4 +1,4 @@
-;;; eieio-opt.el -- eieio optional functions (debug, printing, speedbar)
+;;; eieio-opt.el -- eieio optional functions (debug, printing, speedbar) -*- lexical-binding: t; -*-
;; Copyright (C) 1996, 1998-2003, 2005, 2008-2021 Free Software
;; Foundation, Inc.