I thought this was going to be about compiling regular expressions, which is how CL-PPCRE (https://edicl.github.io/cl-ppcre/ https://edicl.github.io/cl-ppcre/)

I thought this was going to be about compiling regular expressions, which is how CL-PPCRE (https://edicl.github.io/cl-ppcre/ https://edicl.github.io/cl-ppcre/) manages to be faster than C. Better algorithms beat compilation, though.