Function ucl_parser_set_default_priority 

pub unsafe extern "C" fn ucl_parser_set_default_priority(
    parser: *mut ucl_parser,
    prio: c_uint,
) -> bool

Sets the default priority for the parser applied to chunks that do not specify priority explicitly @param parser parser object @param prio default priority (0 .. 16) @return true if parser’s default priority was set