EllisLab/CodeIgniter — pull request #2111 by carneeki (2013-01-03 14:18:51+00:00)
Title: fix a typo in index.php

"Than" is a comparator.
"Then" is a connector between two or more sequential events.

"foo rather than bar" makes sense. "foo rather then bar" does not.

Change also made in 2.1-stable.