if t.full != nil {
		return t.full.IsRoot()
	}
	return t.language == _und
}

// Parent returns the CLDR parent of t. In CLDR, missing fields in data for a
// specific language are substituted with fields from the parent language.
// The parent for a language may change for newer versions of CLDR.
func (t Tag) Parent() Tag {
	if t.full != nil {
		return Make(t.full.Parent())
	}
	if t.language != t.locale {

// license that can be found in the LICENSE file.

package internal

// This file contains matchers that implement CLDR inheritance.
//
//     See https://unicode.org/reports/tr35/#Locale_Inheritance.
//
// Some of the inheritance described in this document is already handled by
// the cldr package.

import (
	"golang.org/x/text/language"
)

// license that can be found in the LICENSE file.

// Package compact defines a compact representation of language tags.
//
// Common language tags (at least all for which locale information is defined
// in CLDR) are assigned a unique index. Each Tag is associated with such an
// ID for selecting language-related resources (such as translations) as well
// as one for selecting regional defaults (currency, number formatting, etc.)
//

		}
	}
	return abbr1, abbr1
}

type zone struct {
	WinName  string
	UnixName string
	StTime   string
	DSTime   string
}

const wzURL = "https://raw.githubusercontent.com/unicode-org/cldr/main/common/supplemental/windowsZones.xml"

type MapZone struct {
	Other     string `xml:"other,attr"`
	Territory string `xml:"territory,attr"`
	Type      string `xml:"type,attr"`
}

type SupplementalData struct {

// the confidence scores more accurate and allows matchers to distinguish
// between variants that are otherwise lost.
//
// As a consequence, two tags that should be treated as identical according to
// BCP 47 or CLDR, like "en-Latn" and "en", will be represented differently. The
// Matcher handles such distinctions, though, and is aware of the
// equivalence relations. The CanonType type can be used to alter the
// canonicalization form.
//

}

var (
	// Supported defines a Coverage that lists all supported subtags. Tags
	// always returns nil.
	Supported Coverage = allSubtags{}
)

// TODO:
// - Support Variants, numbering systems.
// - CLDR coverage levels.
// - Set of common tags defined in this package.

type allSubtags struct{}

// Regions returns the list of supported regions. As all regions are in a