the standard that defines leftmost-longest is called POSIX, and despite the name suggesting it’s specific to unix, it’s really just the most natural interpretation: among all matches starting at the leftmost position, pick the longest one. this is what grep does, what awk does, and what RE# does.
would do simple checking of the head of types, essentially,
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第一百三十九条 定期租船合同的内容，主要包括出租人和承租人的名称、船名、船籍、船级、吨位、容积、船速、燃料消耗、航区、用途、租船期间、交船和还船的时间和地点以及条件、租金及其支付，以及其他有关事项。
Валентин Карант (редактор отдела БСССР)
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