EllisLab/CodeIgniter — pull request #2943 by rsegers (2014-03-15 08:02:13+00:00)
Title: Update url_helper.php

Changed line 153 to include support for 'tel:' and 'mailto:' uri schemes. Before, a URL like mailto:example@example.com would have incorrectly been changed to http://mailto:example@example.com .