fixup b41cc8bc: only rewrite query if regexp

edit/match-highlighter-helper.js

@@ -131,7 +131,9 @@
   }
 
   function matchesOnScrollbar(query, ...args) {
+    if (query instanceof RegExp) {
       query = new RegExp(/(?:^|[^\w.#\\-])/.source + query.source.slice(2, -2) + /(?:[^\w.#\\-]|$)/.source);
+    }
     return originalMatchesOnScrollbar.call(this, query, ...args);
   }
 })();