//! # Hello World
//!
//! ```shell
//! $ cargo install
//! ```
//!
//! ```
//! # use foo;
//! foo::bar("Hello world");
//! ```

//!! ```
//!! foo::bar("Hello world");
//!! ```

//// ```
//// foo::bar("Hello world");
//// ```

// ```
// foo::bar("Hello world");
// ```

// make sure the color does not break
/// ```
/// # use foo;
/// foo::bar("Hello world");
/// ```
fn bar(s: &str) {
    println!("{}", s);
}

    /// ```shell
    /// $ cargo install
    /// ```
    ///
    /// ```edition2018,no_run
    /// # use foo;
    /// foo::bar("Hello world");
    /// ```
    ///
    /// ```
    /// # use foo;
    /// foo::bar("Hello world");
    /// ```

    //!! ```
    //!! foo::bar("Hello world");
    //!! ```

    //// ```
    //// foo::bar("Hello world");
    //// ```

    // ```
    // foo::bar("Hello world");
    // ```

    /**
     * ```shell
     * $ cargo install
     * ```
     *
     * ```edition2018,no_run
     * # use foo;
     * foo::bar("Hello world");
     * ```
     */

    /**
     ```
     # use foo;
     foo::bar("Hello world");
     ```
     */

    /***
     * ```
     * foo::bar("Hello world");
     * ```
     */

    /*
     * ```
     * foo::bar("Hello world");
     * ```
     */

    //! ```
    //! // not hidden #
    //! #![feature(x)]
    //! # // hidden #
    //! # #![feature(x)]
    //! ```

    /**
     * ```
     * // not hidden #
     * #![feature(x)]
     * # // hidden #
     * # #![feature(x)]
     * ```
     */

    /// ```
    /// println!("empty line");
    ///
    /// println!("continue line");
    /// ```

    /**
     * ```
     * println!("empty line");
     *
     * println!("continue line");
     * ```
     */