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.
МИД России вызвал посла Нидерландов20:44
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一切从实际出发，务实是共产党人的必备品格。
Kyiv may also benefit, financially and politically, if it could support Gulf partners with drone technology and expertise – but, as Zelensky has pointed out, that could probably happen only if Russia were to agree a ceasefire.