bt_action
bs_new(enum bt_action act, struct bt_arg *head, struct bt_var *var)
bm_op(enum bt_action mact, struct bt_arg *ba, struct bt_arg *mval)
struct bt_stmt *bs_new(enum bt_action, struct bt_arg *, struct bt_var *);
struct bt_stmt *bm_op(enum bt_action, struct bt_arg *, struct bt_arg *);