iterating over the patterns, trying to walk each pattern in the trie
both of these approaches use NFAs under the hood, which means O(m * n) matching. our approach is fundamentally different: we encode lookaround information directly in the automaton via derivatives, which gives us O(n) matching with a small constant. the trade-off is that we restrict lookarounds to a normalized form (?<=R1)R2(?=R3) where R1/R2/R3 themselves don’t contain lookarounds. the oracle-based approaches support more general nesting, but pay for it in the matching loop. one open question i have is how they handle memory for the oracle table - if you read a gigabyte of text, do you keep a gigabyte-sized table in memory for each lookaround in the pattern?
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I'd recognize that light signature anywhere.
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窃以为有条件的人家，皆应自觉于世风浇薄之际，努力带头隆厚风习礼俗，譬如春联，不见多精彩，但至少不应以粗鄙无文为得意、以言不及义为荣光。
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