b2                759 src/portapi.c      int b1 = 0, b2 = 0;
b2                769 src/portapi.c              b2 = Scm_GetbUnsafe(p);
b2                770 src/portapi.c              if (b2 == EOF || b2 == '\n') break;
b2                771 src/portapi.c              Scm_UngetbUnsafe(b2, p);