Ticket #38805: 38805.diff

src/wp-admin/includes/class-wp-list-table.php

@@ -1392 +1392 @@
         }
 
         /**
-         * @param object|array $item
-         * @param string $column_name
+         * Handles the default column output.
+         *
+         * @param object|array $item        The current item.
+         * @param string       $column_name The column name.
          */
-        protected function column_default( $item, $column_name ) {}
+        protected function column_default( $item, $column_name ) {
+                /**
+                 * Fires for each registered custom screen column.
+                 *
+                 * The dynamic portion of the hook name, `$this->screen->id`, refers
+                 * to the ID of the current screen.
+                 *
+                 * @since 6.0.0
+                 *
+                 * @param string       $column_name Name of the custom column.
+                 * @param object|array $item        The current item.
+                 */
+                do_action( "manage_{$this->screen->id}_custom_column", $column_name, $item );
+        }
 
         /**
          * @param object|array $item