Allow to go to previous hint state

[araaha]

In many applications that allow for hints (alacritty, vimium in the browser), pressing backspace after the initial key press allows you to go back to the previous hint state. Would it be possible to implement the same in hop? e.g. if I HopWord and the hints lr kr show up somewhere in the buffer. I press l, and the hint updates to r. I want to press <BS> to go back to lr in case I made a mistake initially pressing l and instead intended to press k. As things are right now I have to HopWord again.