Фото: Majid Asgaripour / WANA / Reuters
how does RE# find the leftmost-longest match efficiently? remember the bidirectional scanning we mentioned earlier - run the DFA right to left to find all possible match starts, then run a reversed DFA left to right to find the ends. the leftmost start paired with the rightmost end gives you leftmost-longest. two linear DFA scans, no backtracking, no ambiguity.
，这一点在爱思助手中也有详细论述
runtimes, firmware, system services, debugging artifacts, and other components.
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