Function vips_sys::g_regex_replace_eval

pub unsafe extern "C" fn g_regex_replace_eval(
    regex: *const GRegex, 
    string: *const gchar, 
    string_len: gssize, 
    start_position: gint, 
    match_options: GRegexMatchFlags, 
    eval: GRegexEvalCallback, 
    user_data: gpointer, 
    error: *mut *mut GError
) -> *mut gchar