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-rw-r--r--lisp/calc/calc-macs.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/calc/calc-macs.el b/lisp/calc/calc-macs.el
index 033f6e9080c..0afba2c1b28 100644
--- a/lisp/calc/calc-macs.el
+++ b/lisp/calc/calc-macs.el
@@ -1,4 +1,4 @@
-;;; calc-macs.el --- important macros for Calc
+;;; calc-macs.el --- important macros for Calc -*- lexical-binding:t -*-
;; Copyright (C) 1990-1993, 2001-2019 Free Software Foundation, Inc.