neat, right? and this is just the tip of the iceberg. there are so many more use cases where these operators shine, and i encourage you to play around with them in the web app and see what you can come up with. you can also see the resulting automaton for each regex, and how the different components contribute to the state machine (msagl helped me a lot here).
The current maintainer reimplemented it from scratch by only pointing it to the，详情可参考clash下载
，更多细节参见17c 一起草官网
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