contao/core — pull request #7325 by Toflar (2014-09-17 14:54:19+00:00)
Title: Always cache fallback language

When you don't have any user, member or page with language `en` configured, English will never be cached and thus the `System::convertXlfToPhp()` method will always be called (as `en` is fallback) and convert XML to PHP for every single page view. Yet another 3% performance gain ;-)