[OS X Emacs] Bug with visual-line-down?

[Robert Morelli]

David Reitter wrote:
> On 18 Feb 2009, at 16:35, Robert Morelli wrote:
>
>> I ran into an unexpected behavior running a keyboard macro with an 
>> argument.
>> The macro has a ctrl-n in it,  but every time it reaches the bottom 
>> of the window
>> it fails with:
>
> It's a bit hard to tell without knowing what version of Aquamacs 
> you're using, and which customizations are in effect.
> Do you have track-eol set to `t' ?
Sorry, this was meant to be a response to the 1.7 announcement. This 
behavior is new for me with 1.7. It never appeared
in earlier versions.

My track-eol variable is set to nil. Where/why would I set this 
variable? I wasn't aware of it.