SETARG_B
SETARG_B(getcode(fs, e), nresults+1);
SETARG_B(getcode(fs, e), 2);
SETARG_B(*previous, l - from);
SETARG_B(getcode(fs, e2), e1->u.info);
SETARG_B(fs->f->code[pc], luaO_int2fb(cc.na)); /* set initial array size */