46 X_PFX(hook_add) (x_list * lst, x_hook_function * fun, void *data) {  in X_PFX()
47     return X_PFX(list_prepend) (lst, CELL_NEW(fun, data));  in X_PFX()
51 X_PFX(hook_remove) (x_list * lst, x_hook_function * fun, void *data) {  in X_PFX()
55     for (node = lst; node != NULL; node = node->next) {  in X_PFX()
63         lst = X_PFX(list_remove) (lst, cell);  in X_PFX()
68     return lst;  in X_PFX()
72 X_PFX(hook_run) (x_list * lst, void *arg) {  in X_PFX()
75     if (!lst)  in X_PFX()
78     for (node = lst; node != NULL; node = node->next) {  in X_PFX()
89 X_PFX(hook_free) (x_list * lst) {  in X_PFX()
92     for (node = lst; node != NULL; node = node->next) {  in X_PFX()
96     X_PFX(list_free) (lst);  in X_PFX()