How do I get aquamacs to show a solid and blinking cursor? http://aquamacs.org/
With a lot of work we managed to get it to show a hollow and blinking box, instead of just a blinking vertical line, but that is often just too hard to see.
This works with NT Emacs:
(blink-cursor-mode)
Should work with Aquamacs, too.
If the cursor is not a solid box (here, by default, it is), add
(setq-default cursor-type 'box)