[ESS] automatic line breaks

[Max Kuhn]

> Sounds like auto-fill-mode is turned on somehow.  I don't believe ESS
> does this at all, so it might be set through some other package or
> setting in your config file.

Ug. I should have seen that it is in LaTeX and auto-fill is on (now
that I know what that is). Using M-x auto-fill-mode did the trick. Now
I need to figure out how to universally turn that off.

Thanks,

Max