def get_bool(strings: Sequence[str],
             prefix: str,
             ignoreleadingcolon: bool = False,
             precedingline: str = "") -> Optional[bool]:
    """
    Fetches a boolean parameter via :func:`get_string`.
    """
    return get_bool_raw(get_string(strings, prefix,
                                   ignoreleadingcolon=ignoreleadingcolon,
                                   precedingline=precedingline))