Developer credits
Git commits in Moodle 2.2.2 by Kyle Temkin
commit c31783bb34d27408b288a3d95469737d902fa431 Author: Kyle Temkin <ktemkin@binghamton.edu> Date: Tue, 31 Jan 2012 01:45:49 +0800 Tag: v2.2.2 MDL-31407 quiz: finish_attempt method should not rely on $USER