supers_scm       5125 src/extlib.c     ScmObj supers_scm;
supers_scm       5131 src/extlib.c     supers_scm = SCM_ARGREF(1);
supers_scm       5132 src/extlib.c     if (!SCM_LISTP(supers_scm)) Scm_Error("list required, but got %S", supers_scm);
supers_scm       5133 src/extlib.c     supers = (supers_scm);