use std::borrow::Cow; use bstr::{BStr, ByteSlice}; type Result<T = ()> = std::result::Result<T, Box<dyn std::error::Error>>;fn b(s: &str) -> &bstr::BStr {    s.into()} pub fn cow_str(s: &str) -> Cow<'_, BStr> {    Cow::Borrowed(s.as_bytes().as_bstr())} mod boolean;mod color;mod integer;mod path;