Macro lazy_regex_proc_macros::bytes_regex_find

bytes_regex_find!() { /* proc-macro */ }

Extract the leftmost match of the regex in the second argument as a &[u8]

Example:

let f_word = bytes_regex_find!(r#"\bf\w+\b"#, b"The fox jumps.");
assert_eq!(f_word, Some("fox".as_bytes()));