rainphp/raintpl — pull request #37 by Phyks (2013-09-20 15:18:18+00:00)
Title: Replaced isset($var) by $var !== null on line 481

This allows to iterate through function results (function which returns
an array for example). See issue
https://github.com/rainphp/raintpl/issues/35#issuecomment-24786805