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-rw-r--r--lisp/emacs-lisp/comp.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/emacs-lisp/comp.el b/lisp/emacs-lisp/comp.el
index 869781bea15..304ea8cc6c1 100644
--- a/lisp/emacs-lisp/comp.el
+++ b/lisp/emacs-lisp/comp.el
@@ -520,7 +520,7 @@ Useful to hook into pass checkers.")
(string-to-char (function (string) fixnum))
(string-to-multibyte (function (string) string))
(string-to-number (function (string &optional integer) number))
- (string-to-syntax (function (string) cons))
+ (string-to-syntax (function (string) (or cons null)))
(string< (function ((or string symbol) (or string symbol)) boolean))
(string= (function ((or string symbol) (or string symbol)) boolean))
(stringp (function (t) boolean))