PRINT_FORMAT
#define PRINT_FORMAT(_text, _fmt) do { char _buf[300]; string_for_format((_fmt), _buf, sizeof(_buf)); printf("%s %s\n", (_text), (_buf)); } while (0)
#define PRINT_FORMAT(_text, _fmt) ((void)0)
# define PRINT_FORMAT(_text, _fmt) do { char _buf[300]; string_for_format((_fmt), _buf, sizeof(_buf)); printf("%s %s\n", (_text), (_buf)); } while (0)
# define PRINT_FORMAT(_text, _fmt) ((void)0)