Is it possible to have mocha report the filename containing a failed test? Could I write a reporter that did this? Or would I have to build support for it, and then write such a reporter? Not at all familiar w/ the mocha codebase yet, but I'd be willing to take a dive in and try out contributing this if the Mocha community would welcome it.

After a test fails, I frequently find myself grepping the title of the test to determine the filename so I can then run the test in isolation.
Reporting the filename would save me a step.