var golang.org/x/text/internal/language.separator

5 uses

	golang.org/x/text/internal/language (current package)
		parse.go#L347: var separator = []byte{'-'}
		parse.go#L400: 		if str := bytes.Join(variant[:k], separator); len(str) == 0 {
		parse.go#L484: 		scan.b = append(scan.b, bytes.Join(exts, separator)...)
		parse.go#L511: 				copy(scan.b[p:], bytes.Join(attrs, separator))
		parse.go#L554: 				reordered := bytes.Join(keys, separator)