scala/scala — pull request #1397 by jsuereth (2012-09-25 18:09:13+00:00)
Title: Improves SI-6409 - Add note to string flatMap about evaluation.

Note: flatMap has to evaluate the stream until it finds
a head for the new stream. This is a limitation that will
exist for 2.10.0, but the bug will remain open.

Review by @axel22