__printf_2_3 int para_printf(struct para_buffer *b, const char *fmt, ...);
/** Used for for_each_line() and for_each_line_ro(). */
typedef int line_handler_t(char *, void *);
int for_each_line(char *buf, size_t size, line_handler_t *line_handler,
void *private_data);
__printf_2_3 int para_printf(struct para_buffer *b, const char *fmt, ...);
/** Used for for_each_line() and for_each_line_ro(). */
typedef int line_handler_t(char *, void *);
int for_each_line(char *buf, size_t size, line_handler_t *line_handler,
void *private_data);