fall back to default if no keyword is parsed.

clj/clarity/cljs/clarity.cljs

                    :pattern "^:(\\w+|\\w+(\\.\\w+)*\\/\\w+)$"
                    :onChange (fn [ev]
                                (when (valid? (.-target ev))
                                  (om/update! kw (fn [o n] n) (read-keyword (.. ev -target -value)))))})))
                                  (om/update! kw (fn [o n] n) (or (read-keyword (.. ev -target -value))
                                                                  (empty-value 'Keyword)))))})))
(defmethod make-typed-input 'String [string owner]
  (om/component