That's what I was thinking as well. I loved the demo, but was a bit surprised at how much redundant data was stored behind the scenes. Capturing keystrokes cou

That's what I was thinking as well. I loved the demo, but was a bit surprised at how much redundant data was stored behind the scenes. Capturing keystrokes could still be a viable option if you maintained something like a virtual cursor that could move around the text display area. Or of course, diffs are the most straightforward way to do it.