offset_scm       3616 src/extlib.c     ScmObj offset_scm;
offset_scm       3627 src/extlib.c     offset_scm = SCM_ARGREF(1);
offset_scm       3628 src/extlib.c     if (!SCM_EXACTP(offset_scm)) Scm_Error("exact integer required, but got %S", offset_scm);
offset_scm       3629 src/extlib.c     offset = (offset_scm);