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-rw-r--r--lisp/emacs-lisp/bytecomp.el3
1 files changed, 2 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 5cff86784f0..3af7ede4c8e 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -2234,7 +2234,8 @@ See also `emacs-lisp-byte-compile-and-load'."
(setq buffer-read-only nil
filename buffer-file-name))
;; Don't inherit lexical-binding from caller (bug#12938).
- (unless (local-variable-p 'lexical-binding)
+ (unless (or (local-variable-p 'lexical-binding)
+ (null lexical-binding))
(let ((byte-compile-current-buffer (current-buffer)))
(displaying-byte-compile-warnings
(byte-compile-warn-x