#define MUTATOR_HOOK(cb, func, order) MACRO_BEGIN { \
MUTATOR_ONADD { \
if (!CallbackChain_Add(HOOK_##cb, CALLBACK_##func, order)) { \
#define MUTATOR_HOOK(cb, func, order) MACRO_BEGIN { \
MUTATOR_ONADD { \
if (!CallbackChain_Add(HOOK_##cb, CALLBACK_##func, order)) { \