almost every regex engine today descends from one of two approaches: Thompson’s NFA construction (1968) or backtracking (1994). Thompson-style engines (grep, RE2, Rust’s regex) give you linear-time guarantees but only support the “standard” fragment - | and *. backtracking engines (the rest, 95% chance the one you’re using) give you a mix of advanced features like backreferences, lookarounds.., but are unreliable, and can blow up to exponential time on adversarial inputs, which is a real security concern known as ReDoS. to be more precise, this exponential behavior is not the only problem with backtracking engines - they also handle the OR (|) operator much slower, but let’s try to start with the big picture.
When issuing takedowns, Brandon White has pointed to the INTEROCO “copyright certificates” as his proof of ownership for Cookie’s Bustle. If White does actually own the rights to Cookie’s Bustle, these deposits do not show that. However, it’s understandable that these “registrations” caused confusion. If you don’t know the specifics of how copyright registration works, you might assume that an official-looking source like INTEROCO is a reliable indicator of who owns the rights that are listed. It’s not.
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回信勉励四川省南充市嘉陵区之江小学学生：“坚持德智体美劳全面发展，争做爱党爱国、自立自强、奋发向上的新时代好少年，努力成长为堪当强国建设、民族复兴大任的栋梁之材。”