make_port         447 src/port.c         p = make_port(klass, dir, SCM_PORT_FILE);
make_port         901 src/port.c         ScmPort *p = make_port(SCM_CLASS_PORT, SCM_PORT_INPUT, SCM_PORT_ISTR);
make_port         914 src/port.c         ScmPort *p = make_port(SCM_CLASS_PORT, SCM_PORT_OUTPUT, SCM_PORT_OSTR);
make_port        1016 src/port.c         ScmPort *p = make_port(klass, direction, SCM_PORT_PROC);