[BUG] r_showbboxes_filter can't be unset

[barneycarroll]

The feature is incredibly powerful but AFAICT there is no way of clearing the filter — nearest fuge is setting it to _ but this won't get a hit on the single-word entity classnames.

Perhaps the function could special-case an input of * (which AFAICT wouldn't be a valid classname character?) to clear the internal variable?

[andrey-budko]

r_showbboxes_filter "" ?

[barneycarroll]

Thanks, I had no idea quotes worked!