pub unsafe extern "C" fn sapi_register_input_filter( input_filter: Option<unsafe extern "C" fn(arg: c_int, var: *mut c_char, val: *mut *mut c_char, val_len: size_t, new_val_len: *mut size_t) -> c_uint>, input_filter_init: Option<unsafe extern "C" fn() -> c_uint>) -> c_int
