Function render_atomic_install_value

atomic-cli/src/commands/update.rs:344–352

Render an `ATOMIC_INSTALL=...` value suitable for embedding in a shell snippet. When the directory equals `$HOME/.local/bin` literally we keep the pretty `"$HOME/.local/bin"` form so users can copy it verbatim and have their shell expand `$HOME`. Otherwise we POSIX single-quote the absolute path so it survives copy-paste regardless of what's in it.

(dir: &Path, home: Option<&str>)

/// single-quote the absolute path so it survives copy-paste regardless
/// of what's in it.
fn render_atomic_install_value(dir: &Path, home: Option<&str>) -> String {
    if let Some(h) = home {
        let home_local_bin = PathBuf::from(h).join(".local").join("bin");
        if dir == home_local_bin {
            return r#""$HOME/.local/bin""#.to_string();
        }
    }
    shell_quote(&dir.display().to_string())
}

/// Produce the multi-line outdated message for a given source. Pure so
/// the unit tests can match on substrings.