block_proc_is_lambda  500 vm.c           	int type = block_proc_is_lambda(block->proc) ?
block_proc_is_lambda  653 vm_insnhelper.c     int lambda = block_proc_is_lambda(block->proc);
block_proc_is_lambda  880 vm_insnhelper.c 				     block_proc_is_lambda(block->proc));