kubernetes/vendor/golang.org/x/text/internal/match.go

// NewInheritanceMatcher returns a matcher that matches based on the inheritance
// chain.
//
// The matcher uses canonicalization and the parent relationship to find a
// match. The resulting match will always be either Und or a language with the
// same language and script as the requested language. It will not match
// languages for which there is understood to be mutual or one-directional
// intelligibility.
//
// A Match will indicate an Exact match if the language matches after
// canonicalization and High if the matched tag is a parent.
func NewInheritanceMatcher(t []language.Tag) *InheritanceMatcher { … }

type InheritanceMatcher …

func (m InheritanceMatcher) Match(want ...language.Tag) (language.Tag, int, language.Confidence) { … }