EllisLab/CodeIgniter — pull request #875 by narfbg (2012-01-06 23:11:52+00:00)
Title: Fixed issue 874

The bug was introduced in one of my latest pull requests and the code was never released, so no changelog entry should be needed.

I remember specifically testing the result of `substr($string, 0, -$length)` prior to submitting it, but I guess ... well, I don't know how that happened. Anyways - it's better this way as neither `substr()` or `strtolower()` are required.