oncep            2426 src/gauche.h   SCM_EXTERN ScmObj Scm_VMMacroExpand(ScmObj expr, ScmObj env, int oncep);
oncep             933 src/macro.c    ScmObj Scm_VMMacroExpand(ScmObj expr, ScmObj env, int oncep)
oncep             965 src/macro.c            if (!oncep) {