Scm_ByteReadyUnsafe 1234 src/port.c             return Scm_ByteReadyUnsafe(p);
Scm_ByteReadyUnsafe  805 src/portapi.c  int Scm_ByteReadyUnsafe(ScmPort *p)
Scm_ByteReadyUnsafe  810 src/portapi.c      SHORTCUT(p, return Scm_ByteReadyUnsafe(p));