use std::path::PathBuf; use bstr::ByteSlice; ///pub mod gitdir {    use bstr::BString;     /// The error returned by [`parse::gitdir()`][super::gitdir()].    #[derive(Debug, thiserror::Error)]    #[allow(missing_docs)]    pub enum Error {        #[error("Format should be 'gitdir: <path>', but got: {:?}", .input)]        InvalidFormat { input: BString },        #[error("Couldn't decode {:?} as UTF8", .input)]        IllformedUtf8 { input: BString },    }} /// Parse typical `git_dir` files as seen in worktrees and submodules.pub fn gitdir(input: &[u8]) -> Result<PathBuf, gitdir::Error> {    let path = input        .strip_prefix(b"gitdir: ")        .ok_or_else(|| gitdir::Error::InvalidFormat { input: input.into() })?        .as_bstr();    let path = path.trim_end().as_bstr();    if path.is_empty() {        return Err(gitdir::Error::InvalidFormat { input: input.into() });    }    Ok(git_path::try_from_bstr(path)        .map_err(|_| gitdir::Error::IllformedUtf8 { input: input.into() })?        .into_owned())}