Fix completing-read functional REQUIRE-MATCH behavior

* lisp/minibuffer.el (completion--complete-and-exit): If
minibuffer-completion-confirm is a function which returns nil,
immediately fail to complete.

See bug#66187.

(cherry picked from commit 77f5d4d523a406650036b7cd0d872d39a114a9ac)

diff --git a/lisp/minibuffer.el b/lisp/minibuffer.el
index e45eeab06c01434c241aafc2cd071a3e90db6c63..c1b407d09546c6cab80b62f5342e249c9004fd63 100644 (file)
--- a/lisp/minibuffer.el
+++ b/lisp/minibuffer.el
@@ -2127,10 +2127,13 @@ appear to be a match."
    ;; Allow user to specify null string
    ((= beg end) (funcall exit-function))
    ;; The CONFIRM argument is a predicate.
-   ((and (functionp minibuffer-completion-confirm)
-         (funcall minibuffer-completion-confirm
-                  (buffer-substring beg end)))
-    (funcall exit-function))
+   ((functionp minibuffer-completion-confirm)
+    (if (funcall minibuffer-completion-confirm
+                 (buffer-substring beg end))
+        (funcall exit-function)
+      (unless completion-fail-discreetly
+       (ding)
+       (completion--message "No match"))))
    ;; See if we have a completion from the table.
    ((test-completion (buffer-substring beg end)
                      minibuffer-completion-table