improve unify_body and use debug_println
improve unify_body and use debug_println

leuschel/ecce,leuschel/ecce,leuschel/ecce,leuschel/ecce,leuschel/ecce,leuschel/ecce,leuschel/ecce,leuschel/ecce,leuschel/ecce,leuschel/ecce