wp-admin/includes/class-wp-media-list-table.php:232string public function current_action() { if ( isset( $_REQUEST['found_post_id'] ) && isset( $_REQUEST['media'] ) ) { return 'attach'; } if ( isset( $_REQUEST['parent_post_id'] ) && isset( $_REQUEST['media'] ) ) { return 'detach'; } if ( isset( $_REQUEST['delete_all'] ) || isset( $_REQUEST['delete_all2'] ) ) { return 'delete_all'; } return parent::current_action(); }One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
string to string|false.verified against sourcesrc/wp-admin/includes/class-wp-media-list-table.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.