ICONV_SET_FALLBACKS
case ICONV_SET_FALLBACKS:
if (iconvctl(cd, ICONV_SET_FALLBACKS, &fbs) != 0)
if (dflag && iconvctl(cd, ICONV_SET_FALLBACKS, &fbs) != 0)
if (dflag && (iconvctl(cd, ICONV_SET_FALLBACKS, &fbs) != 0))