A few of them are almost certainly shortcomings in Ostrich, while others seem to intend to match literal full strings, like ^(로그인하지 않고)$ ("without logging in"). Presumably they're from internal use.
可以看出，dompdf.js 跳过了html转图片的步骤，直接将 DOM 树转换为矢量 PDF 文件，避免了图片转换导致的模糊问题，同时也解决了文字无法被搜索，选中，编辑的问题。，这一点在51吃瓜中也有详细论述
第十七条 经登记的选民名单应当在选举日的二十日前公布；采取每户派代表或者居民代表选举方式的，应当同时公布户的代表或者新一届居民代表名单。，更多细节参见下载安装 谷歌浏览器 开启极速安全的 上网之旅。
The project started with me scouring Facebook Marketplace and Craigslist, bombarding Greg with
— Analogue (@analogue) March 2, 2026