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-rw-r--r--test/src/syntax-tests.el15
1 files changed, 15 insertions, 0 deletions
diff --git a/test/src/syntax-tests.el b/test/src/syntax-tests.el
index 3b9f21cde37..751a900a23e 100644
--- a/test/src/syntax-tests.el
+++ b/test/src/syntax-tests.el
@@ -506,4 +506,19 @@ the `parse-partial-sexp's are expected to stop. See
(should (parse-partial-sexp 1 1))
(should-error (parse-partial-sexp 2 1))))
+(ert-deftest syntax-char-syntax ()
+ ;; Verify that char-syntax behaves identically in interpreted and
+ ;; byte-compiled code (bug#53260).
+ (let ((cs (byte-compile (lambda (x) (char-syntax x)))))
+ ;; Use a unibyte buffer with a syntax table using symbol syntax
+ ;; for raw byte 128.
+ (with-temp-buffer
+ (set-buffer-multibyte nil)
+ (let ((st (make-syntax-table)))
+ (modify-syntax-entry (unibyte-char-to-multibyte 128) "_" st)
+ (set-syntax-table st)
+ (should (equal (eval '(char-syntax 128) t) ?_))
+ (should (equal (funcall cs 128) ?_))))
+ (list (char-syntax 128) (funcall cs 128))))
+
;;; syntax-tests.el ends here