Ticket #42030: 42030.patch

wp-includes/post.php

@@ -2596 +2596 @@
                 return false;
 
         /**
+         * Filters whether trashing a post should take place.
+         *
+         * @since 4.8.2
+         *
+         * @param bool    $trash        Whether to go forward with trashing.
+         * @param WP_Post $post         Post object.
+         */
+        $check = apply_filters( 'pre_trash_post', null, $post );
+        if ( null !== $check ) {
+                return $check;
+        }
+
+        /**
          * Fires before a post is sent to the trash.
          *
          * @since 3.3.0