use anyhow::bail; use crate::OutputFormat; pub enum Mode {    IsClean,    IsDirty,} pub fn check(    repo: gix::Repository,    mode: Mode,    out: &mut dyn std::io::Write,    format: OutputFormat,) -> anyhow::Result<()> {    if format != OutputFormat::Human {        bail!("JSON output isn't implemented yet");    }    let is_dirty = repo.is_dirty()?;    let res = match (is_dirty, mode) {        (false, Mode::IsClean) => Ok("The repository is clean"),        (true, Mode::IsClean) => Err("The repository has changes"),        (false, Mode::IsDirty) => Err("The repository is clean"),        (true, Mode::IsDirty) => Ok("The repository has changes"),    };     let suffix = "(not counting untracked files)";    match res {        Ok(msg) => writeln!(out, "{msg} {suffix}")?,        Err(msg) => bail!("{msg} {suffix}"),    }    Ok(())}