size_t max_buflen;
};
-void buf_output_init(struct buf_output *out, int index);
+void buf_output_init(struct buf_output *out);
void buf_output_free(struct buf_output *out);
size_t buf_output_add(struct buf_output *out, const char *buf, size_t len);
size_t buf_output_flush(struct buf_output *out);