Ticket #45855: 45855.diff

src/wp-includes/post.php

@@ -4113 +4113 @@
  * @return string Unique slug for the post, based on $post_name (with a -1, -2, etc. suffix)
  */
 function wp_unique_post_slug( $slug, $post_ID, $post_status, $post_type, $post_parent ) {
+
+        /**
+         * Filters the post slug before any processing has happened.
+         *
+         * @since
+         *
+         * @param string $slug        The desired slug (post_name).
+         * @param int    $post_ID     Post ID.
+         * @param string $post_status The status of the post.
+         * @param string $post_type   Post type.
+         * @param int    $post_parent Post parent ID.
+         */
+        $slug = apply_filters( 'wp_unique_post_slug_pre', $slug, $post_ID, $post_status, $post_type, $post_parent );
+
         if ( in_array( $post_status, array( 'draft', 'pending', 'auto-draft' ) ) || ( 'inherit' == $post_status && 'revision' == $post_type ) || 'user_request' === $post_type ) {
                 return $slug;
         }