case r >= 'a' && r <= 'z':
			return 'a' + (r-'a'+13)%26
		}
		return r
	}
	fmt.Printf("%s\n", bytes.Map(rot13, []byte("'Twas brillig and the slithy gopher...")))
	// Output:
	// 'Gjnf oevyyvt naq gur fyvgul tbcure...
}

func ExampleReader_Len() {
	fmt.Println(bytes.NewReader([]byte("Hi!")).Len())
	fmt.Println(bytes.NewReader([]byte("こんにちは!")).Len())
	// Output:
	// 3
	// 16
}

"chomh", "chtó", "chuig", "chun", "cois", "céad", "cúig", "cúigear", "d'", "daichead", "dar", "de", "deich", "deichniúr", "den", "dhá", "do", "don", "dtí", "dá", "dár", "dó", "faoi", "faoin", "faoina", "faoinár", "fara", "fiche", "gach", "gan", "go", "gur", "haon", "hocht", "i", "iad", "idir", "in", "ina", "ins", "inár", "is", "le", "leis", "lena", "lenár", "m'", "mar", "mo", "mé", "na", "nach", "naoi", "naonúr", "ná", "ní", "níor", "nó", "nócha", "ocht", "ochtar", "os", "roimh", "sa", "seacht", "seachtar",...

?nay??ma!nab??rof?s??ilften?jt?m!.&bog?gro?moc?ten?ude??g?ma2ibgy--nx??o&b!x??f?rex??rbgn--nx?s!.vog??x&am&jt?kt??x???y&4punu--nx?7rr03--nx?a&d!i&loh?rfkcalb??ot!.emyfilauqerp,??g!.segap,?lp?p!ila??rot?ssin?wdaorb??b!.&fo?hcetaidem,lim?moc?vog??ab?gur??c!.&ca?dtl?gro?lim?m&oc!.ecrofelacs.j,?t??orp?s&egolke?serp??ten?vog?zib??amrahp?nega??d&dadog?uts??e&kcoh?n&dys?om?rotta??snikcm??g!.&gro?moc?oc?ten?ude?vog??olonhcet!.oc,?rene??hpargotohp?id?k!.&gro?moc?ten?ude??s??l!.&clp?d&em?i??gro?hcs?moc?te...

12400..12462  ; valid                  ;      ; NV8    # 5.0  CUNEIFORM NUMERIC SIGN TWO ASH..CUNEIFORM NUMERIC SIGN OLD ASSYRIAN ONE QUARTER
12463..1246E  ; valid                  ;      ; NV8    # 7.0  CUNEIFORM NUMERIC SIGN ONE QUARTER GUR..CUNEIFORM NUMERIC SIGN NINE U VARIANT FORM
1246F         ; disallowed                             # NA   <reserved-1246F>