code: function isSimple(typed) {
     for (var i = 0; i < typed.length; i++) {
       var c = typed.charAt(i);
       if (c === ' ' || c === '"' || c === '\'' ||
           c === '{' || c === '}' || c === '\\') {
         return false;
       }
     }
     return true;
  }
docs: If the input has no spaces, quotes, braces or escapes,
  we can take the fast track.