Function is_utf8_encoding

crates/vm/src/stdlib/builtins.rs:186–189

(name: &str)

    /// Matches: utf-8, utf_8, utf8, UTF-8, etc.
    #[cfg(feature = "parser")]
    fn is_utf8_encoding(name: &str) -> bool {
        let normalized: String = name.chars().filter(|&c| c != '-' && c != '_').collect();
        normalized.eq_ignore_ascii_case("utf8")
    }

    #[cfg(feature = "parser")]
    fn decode_source_bytes(source: &[u8], filename: &str, vm: &VirtualMachine) -> PyResult<String> {