Ticket #57105: comment_validation.patch

wp-includes/comment.php

@@ -3621 +3621 @@
                 'user_id'
         );
 
+        /**
+         * Allows a custom validation.
+         *
+         * @since TBD
+         *
+         * @param null|WP_Error $custom_validation Your possible custom error.
+         * @param array         $commentdata       Array of comment data to be sent to wp_insert_comment().
+         * @param array         $comment_data      The raw comment data from the function call.
+         */
+        $custom_validation = apply_filters( 'comment_form_fields_validation', null, $commentdata, $comment_data );
+        if ( is_wp_error( $custom_validation ) ) {
+                return $custom_validation;
+        }
+
         /**
          * Filters whether an empty comment should be allowed.
          *