Revert "Raise an error when detecting old-style backquotes."

This reverts commit 9613690f6e51e2f2aa2bcbbede3e209d08cfaaad.

2 files changed, 13 insertions, 8 deletions

diff --git a/test/lisp/emacs-lisp/bytecomp-tests.el b/test/lisp/emacs-lisp/bytecomp-tests.el
index 1f85c269780..30d2a4753cf 100644
--- a/test/lisp/emacs-lisp/bytecomp-tests.el
+++ b/test/lisp/emacs-lisp/bytecomp-tests.el
@@ -534,18 +534,23 @@ literals (Bug#20852)."
 
 (ert-deftest bytecomp-tests--old-style-backquotes ()
   "Check that byte compiling warns about old-style backquotes."
+  (should (boundp 'lread--old-style-backquotes))
   (bytecomp-tests--with-temp-file source
     (write-region "(` (a b))" nil source)
     (bytecomp-tests--with-temp-file destination
       (let* ((byte-compile-dest-file-function (lambda (_) destination))
-             (byte-compile-debug t)
-             (err (should-error (byte-compile-file source))))
+            (byte-compile-error-on-warn t)
+            (byte-compile-debug t)
+            (err (should-error (byte-compile-file source))))
         (should (equal (cdr err)
-                       '("Loading `nil': old-style backquotes detected!")))))))
+                       (list "!! The file uses old-style backquotes !!
+This functionality has been obsolete for more than 10 years already
+and will be removed soon.  See (elisp)Backquote in the manual.")))))))
 
 
 (ert-deftest bytecomp-tests-function-put ()
   "Check `function-put' operates during compilation."
+  (should (boundp 'lread--old-style-backquotes))
   (bytecomp-tests--with-temp-file source
     (dolist (form '((function-put 'bytecomp-tests--foo 'foo 1)
                     (function-put 'bytecomp-tests--foo 'bar 2)
diff --git a/test/src/lread-tests.el b/test/src/lread-tests.el
index 3f41982eba1..ac730b4f005 100644
--- a/test/src/lread-tests.el
+++ b/test/src/lread-tests.el
@@ -173,13 +173,13 @@ literals (Bug#20852)."
     (should (string-suffix-p "/somelib.el" (caar load-history)))))
 
 (ert-deftest lread-tests--old-style-backquotes ()
-  "Check that loading doesn't accept old-style backquotes."
+  "Check that loading warns about old-style backquotes."
   (lread-tests--with-temp-file file-name
     (write-region "(` (a b))" nil file-name)
-    (let ((data (should-error (load file-name nil :nomessage :nosuffix))))
-      (should (equal (cdr data)
-                     (list (concat (format-message "Loading `%s': " file-name)
-                                   "old-style backquotes detected!")))))))
+    (should (equal (load file-name nil :nomessage :nosuffix) t))
+    (should (equal (lread-tests--last-message)
+                   (concat (format-message "Loading `%s': " file-name)
+                           "old-style backquotes detected!")))))
 
 (ert-deftest lread-lread--substitute-object-in-subtree ()
   (let ((x (cons 0 1)))