Ideas for hl-line-mode

[Dave Abrahams]

I just realized that there are a whole bunch of modes where the
horizontal position of the cursor just doesn't matter, and that these
correspond almost exactly to where I want hl-line-mode active.  In these
modes would also want to make the cursor very close to the color of the
highlight.  It would be nice if emacs had a way for modes to represent
that they're "vertical-position-only modes" so that this sort of thing
could be set up programmatically.

Thoughts?

-- 
Dave Abrahams
BoostPro Computing
http://www.boostpro.com