{ if ( mStream_At > mStream_Buf && c > 0 ) *--mStream_At = c; }
{ if ( mStream_At > mStream_Buf && c > 0 ) *--mStream_At = (mork_u1) c; }
  void    Ungetc(int c) /*i*/  { if ( mStream_At > mStream_Buf && c > 0 ) *--mStream_At = c; }