ruby/ruby — pull request #342 by timabdulla (2013-06-25 21:33:38+00:00)
Title: Expound further on the behaviour of Mutex#wait

The documentation for Mutex#wait did not previously note that
after the thread that is put to sleep by the call to wait is woken
up, it will attempt to reacquire the mutex. This note has now been
added.