scalaz/scalaz — pull request #264 by S11001001 (2013-01-21 22:32:56+00:00)
Title: An Unapply for types shaped like [a]M[F[_], a], e.g. StreamT

From [an example] (https://groups.google.com/d/msg/scalaz/9zAIGETrePI/o1rBsOcWJWAJ) for Ka Ter.