ripgrep uses the PCRE2 library directly. Otherwise ripgrep is "pure" Rust. (To the extent that is plausible at present. e.g., ripgrep relies on libc indirectly

ripgrep uses the PCRE2 library directly. Otherwise ripgrep is "pure" Rust. (To the extent that is plausible at present. e.g., ripgrep relies on libc indirectly via Rust's standard library.)