elixir-lang/elixir — pull request #2048 by pminten (2014-02-09 15:28:45+00:00)
Title: Use a gen_server for exunit formatter dispatch

This is a fairly big patch and I'm not 100% of some details (such as the CounterFormatter returning the number of tests just to satisfy the test suite if a particular option to ExUnit.Runner.run is used).