regex ir opt code rewrite gen2, window scanning
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@@ -66,3 +66,7 @@ COUNT_SEQ(a,0,+inf,greedy)
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5. a{m,n}特征,展开为
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MATCH_SEQ(aa...m个a....aa)
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COUNT_SEQ(a,0,n,greedy)
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6. .*?a*$
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7. 对于一般的.*?,应该将后续的所有东西全都放进一个巨大的try,code gen时使用最慢的一位一位offset直到直到第一个匹配rest的东西
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