I definitely think there is interest and we've discussed doing this before. It informed some of our discussion of wanting to support custom key bindings and discussions of how to support key bindings of alt+key that might otherwise conflict with unicode or menu accelerators. I know @raphlinus has said he's interested in Kakoune bindings.
The very loose plan here is to implement a general framework for modal editing support that can be adapted to any number of particular implementations, of which kak is the second obvious target, after vi.
for reference the discussion issue for modal editing is #302.
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The very loose plan here is to implement a general framework for modal editing support that can be adapted to any number of particular implementations, of which kak is the second obvious target, after vi.