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in RE#, we solve this by encoding the context information in the state itself. below, you can see the state machine for the regex ab(?=cd), which matches an ‘ab’ only if it’s followed by a ‘cd’. encoded in the final state, is the information that the match actually happened two characters ago.，推荐阅读PDF资料获取更多信息
Анна Габай (Редактор отдела «Силовые структуры»)，这一点在wps下载中也有详细论述
16:13, 4 марта 2026МирЭксклюзив。谷歌浏览器下载对此有专业解读