(Feature Request) Close a search when the contents after '/' are empty

[AdamKBeck]

After a search using '/foo', all 'foo' keywords are highlighted. I do not believe there is a way to make the highlights go away, except by closing the search at the bottom righthand side of DrRacket.

If it's possible to close the search highlighting, I would like drracket-vim to be able to close the search highlighting when one searches for nothing, which would be '/'.