My favorite part about this documentation is actually the "Safety and correctness" section: https://html5-parser.readthedocs.io/en/latest/#safety-and-co...

It shows that a good engineer took the time to think about not only speed, but correctness in implementation, and compiling things with `-pedantic-errors -Wall -Werror` is a practice that I very rarely see in the wild, and should be heralded as good practice. It's far too common to see hundreds of warnings zip past while compiling, and sometimes they do tell you about problems you need to solve.