Serhiy: there was an issue with /r/n going across a chunk boundary that was fixed a while back, so there should be a test for that (I hope).

As for how to handle line breaks, backward compatibility applies: we have to continue to do what we did before, and it doesn't look like this patch changes that.  That is, it sounds like you are saying there is a pre-existing bug that we may want to address?  In which case it should presumably be a separate issue.