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Wow, 1 and 3 are things I've really been wanting but didn't realize hammerspoon could do, thanks!

I'm already using hammerspoon for making scrolling work with my trackball mouse and it works great.

I have a Kensington trackball and scrolling works fine with provided drivers or even without them. Just curious about hammerspoon was needed in your case.

i’m not OP, but some older design trackballs still being sold don’t have scroll. Also, some newer designs have poor scrolling due to physical scroll ring not being smooth, or the touch scrolling being jittery. But, yes i would like to hear what his hammerspoon solution is too.

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