Arrow down skips lines

[b-d-m-p]

Not sure if you intended for us to be able to use the arrows, but they work generally. Sometimes they skip lines though. Would like to have that feature.

[orentrutner]

An intriguing idea! I have to admit I didn't quite plan for that use case. Reading Ruler at its current incarnation always highlights the line under the mouse cursor. I can see how for some websites the arrow keys would scroll exactly one line at a time -- which would give that neat line-by-line keyboard experience. But that would be a happy accident of the browser just happening to scroll exactly one line at a time. In other sites or pages, the browser might scroll more or less, resulting in skips.

I imagine you're proposing a variation of the current behavior where instead of following the mouse, the highlights follows the arrow keys -- or perhaps tries its best to respect both. To stay true arrow-key navigation, it would let the highlight depart the mouse cursor to avoid line skips. Is that more-or-less the spirit of the idea?

There might be some edge cases to noodle through. For example, if the browser is scrolling slightly faster than one line at a time but the highlights always move just one line each down key, there would be a point where the highlight just disappears above the viewable portion of the scrollable document. I'm not quite sure how to deal with that yet.

I find the proposal appealing. I'll appreciate more thoughts to flesh out the desired behavior. Thanks!

[b-d-m-p]

Yeah, that's the ideas! I think it would be good.

[Nudin]

I'd love to see this. It's probably easier to implement it with other keys then Arrow up/down – for example j and k. This would avoid interference with the browsers own key shortcuts.