pub unsafe extern "C" fn g_regex_replace_eval(
regex: *const GRegex,
string: *const i8,
string_len: isize,
start_position: i32,
match_options: u32,
eval: Option<unsafe extern "C" fn(_: *const GMatchInfo, _: *mut GString, _: *mut c_void) -> i32>,
user_data: *mut c_void,
error: *mut *mut GError
) -> *mut i8