pf               2574 src/syslib.c     ScmObj pf;
pf               2580 src/syslib.c     pf = (pf_scm);
pf               2584 src/syslib.c   int fd = Scm_GetPortFd(pf, FALSE);
pf               2602 src/syslib.c     ScmObj pf;
pf               2610 src/syslib.c     pf = (pf_scm);
pf               2615 src/syslib.c   int fd = Scm_GetPortFd(pf, FALSE);