RUBY_EVENT_RAISE  566 eval.c         	EXEC_EVENT_HOOK(th, RUBY_EVENT_RAISE, th->cfp->self, 0, 0, mesg);
RUBY_EVENT_RAISE  574 vm_trace.c           case RUBY_EVENT_RAISE:	return "raise";
RUBY_EVENT_RAISE  852 vm_trace.c         if (trace_arg->event & (RUBY_EVENT_RAISE)) {