| Q | A | ---------------- | ----- | Bug report? | yes | Feature request? | no | BC Break report? | no | RFC? | no | Symfony version | 3.4 The default value of this option is `^/(app(_[\\w]+)?\\.php/)?_wdt`. See https://github.com/symfony/symfony/blob/9bd28fc728a500ca2cea4cfdb7c3146ff2cb90f2/src/Symfony/Bundle/WebProfilerBundle/DependencyInjection/Configuration.php#L41 Shouldn't we update it now that `app.php` and `app_dev.php` no longer exist by default in Symfony apps?