Add right-arrow completion so that if one types the first (few) letter(s) of one of the choices in the list, then presses the right-arrow (with the cursor at the end of the typed string, the text will be completed with the first matching choice in the list (similar to up and down-arrow, but repeated pressing only toggles between any matching choices in the list, whereas down-arrow, continues to switch between all the choices in the list. To revert to pre-4.65 behavior, specify -altbinding => 'Right=NoSearch'.