}
		if tt.n < 0 {
			b := sliceOfString(Split([]byte(tt.s), []byte(tt.sep)))
			if !slices.Equal(result, b) {
				t.Errorf("Split disagrees withSplitN(%q, %q, %d) = %v; want %v", tt.s, tt.sep, tt.n, b, a)
			}
		}
		if len(a) > 0 {
			in, out := a[0], s
			if cap(in) == cap(out) && &in[:1][0] == &out[:1][0] {
				t.Errorf("Join(%#v, %q) didn't copy", a, tt.sep)
			}
		}
	}

&edoc,golb,ppa,?s&i&hcrana-&a-si,na-si,?laicos-a-si,pareht-a-si,tra-na-si,xetn&od,seod,??oh&piym,sfn,??u&-morf,nyekcoh-asi,?v-morf,?u&-rof-slles,4,a-sppatikria,e,h,oynahtretramssi,r:ug-a-si,,?v&n-morf,rdlf,w-morf,?w&o&lpwons-yrt,zok,?ww100,?x&bsbf.sppa,em,inuemoh,obaniateb,t-morf,unilemoh,?y&a&bnx:.&2u,lacol-2u,?,l&erottad,pezam,?wetag-llawerif,?dnacsekil,fipohsym,k&-morf,niksisnd,?r&aidanetah,ot&ceridevitcaym,sitk,??u:goo,,w-morf,x&alagkeeg,orp&hsilbup,mapson.duolc,???z&esdrocsid,tilbcitats-&pr...

&edoc,golb,ppa,?s&i&hcrana-&a-si,na-si,?laicos-a-si,pareht-a-si,tra-na-si,xetn&od,seod,??oh&piym,sfn,??u&-morf,nyekcoh-asi,?v-morf,?u&-rof-slles,4,a-sppatikria,e,h,oynahtretramssi,r:ug-a-si,,?v&n-morf,rdlf,w-morf,?w&o&lpwons-yrt,zok,?ww100,?x&bsbf.sppa,em,inuemoh,obaniateb,t-morf,unilemoh,?y&a&bnx:.&2u,lacol-2u,?,l&erottad,pezam,?wetag-llawerif,?dnacsekil,fipohsym,k&-morf,niksisnd,?r&aidanetah,ot&ceridevitcaym,sitk,??u:goo,,w-morf,x&alagkeeg,orp&hsilbup,mapson.duolc,???z&esdrocsid,tilbcitats-&pr...

				"application/vnd.sealed.tiff",
				"application/vnd.sealed.xls",
				"application/vnd.sealedmedia.softseal.html",
				"application/vnd.sealedmedia.softseal.pdf",
				"application/vnd.seemail",
				"application/vnd.sema",
				"application/vnd.semd",
				"application/vnd.semf",
				"application/vnd.shana.informed.formdata",
				"application/vnd.shana.informed.formtemplate",
				"application/vnd.shana.informed.interchange",