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One of the nice things about Ostrich is that it contains an extension to the SMT-LIB constraint standard to parse and handle ECMA regular expressions. Well, not all of them; ECMA and other PCRE-derived regexes are in fact not regular (2022 paper) and cannot in theory be represented accurately for string-solving purposes. In practice, though, that's rarely a problem. Ostrich also contains cool tricks to some of the traditionally difficult/impossible regex features, developed for Black Ostrich. You can read about them in the director's cut version of our paper!
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作为深植于民族记忆的中华老字号，西凤酒始终以守护与传承为己任，不仅将非遗技艺与酒海陈藏工艺视为立身之本，更通过支持文化活动、践行公益理念，让这份流淌的文化遗产，融入当代生活。