Update libkv dependency

vendor/golang.org/x/text/language/common.go

@@ -1,4 +1,4 @@
-// This file was generated by go generate; DO NOT EDIT
+// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
 
 package language
 

vendor/golang.org/x/text/language/language.go

@@ -593,7 +593,7 @@ func (t Tag) Extension(x byte) (ext Extension, ok bool) {
 			return Extension{ext}, true
 		}
 	}
-	return Extension{string(x)}, false
+	return Extension{}, false
 }
 
 // Extensions returns all extensions of t.

vendor/golang.org/x/text/language/maketables.go

@@ -678,6 +678,8 @@ func (b *builder) parseIndices() {
 	b.locale.parse(meta.DefaultContent.Locales)
 }
 
+// TODO: region inclusion data will probably not be use used in future matchers.
+
 func (b *builder) computeRegionGroups() {
 	b.groups = make(map[int]index)
 
@@ -686,6 +688,11 @@ func (b *builder) computeRegionGroups() {
 		b.groups[i] = index(len(b.groups))
 	}
 	for _, g := range b.supp.TerritoryContainment.Group {
+		// Skip UN and EURO zone as they are flattening the containment
+		// relationship.
+		if g.Type == "EZ" || g.Type == "UN" {
+			continue
+		}
 		group := b.region.index(g.Type)
 		if _, ok := b.groups[group]; !ok {
 			b.groups[group] = index(len(b.groups))
@@ -782,6 +789,7 @@ func (b *builder) writeLanguage() {
 	lang.updateLater("tw", "twi")
 	lang.updateLater("nb", "nob")
 	lang.updateLater("ak", "aka")
+	lang.updateLater("bh", "bih")
 
 	// Ensure that each 2-letter code is matched with a 3-letter code.
 	for _, v := range lang.s[1:] {
@@ -1482,6 +1490,11 @@ func (b *builder) writeRegionInclusionData() {
 		containment = make(map[index][]index)
 	)
 	for _, g := range b.supp.TerritoryContainment.Group {
+		// Skip UN and EURO zone as they are flattening the containment
+		// relationship.
+		if g.Type == "EZ" || g.Type == "UN" {
+			continue
+		}
 		group := b.region.index(g.Type)
 		groupIdx := b.groups[group]
 		for _, mem := range strings.Split(g.Contains, " ") {

vendor/golang.org/x/text/language/match.go

@@ -396,8 +396,8 @@ type matcher struct {
 // matchHeader has the lists of tags for exact matches and matches based on
 // maximized and canonicalized tags for a given language.
 type matchHeader struct {
-	exact []haveTag
-	max   []haveTag
+	exact []*haveTag
+	max   []*haveTag
 }
 
 // haveTag holds a supported Tag and its maximized script and region. The maximized
@@ -457,7 +457,7 @@ func (h *matchHeader) addIfNew(n haveTag, exact bool) {
 		}
 	}
 	if exact {
-		h.exact = append(h.exact, n)
+		h.exact = append(h.exact, &n)
 	}
 	// Allow duplicate maximized tags, but create a linked list to allow quickly
 	// comparing the equivalents and bail out.
@@ -472,7 +472,7 @@ func (h *matchHeader) addIfNew(n haveTag, exact bool) {
 			break
 		}
 	}
-	h.max = append(h.max, n)
+	h.max = append(h.max, &n)
 }
 
 // header returns the matchHeader for the given language. It creates one if
@@ -503,7 +503,7 @@ func newMatcher(supported []Tag) *matcher {
 		pair, _ := makeHaveTag(tag, i)
 		m.header(tag.lang).addIfNew(pair, true)
 	}
-	m.default_ = &m.header(supported[0].lang).exact[0]
+	m.default_ = m.header(supported[0].lang).exact[0]
 	for i, tag := range supported {
 		pair, max := makeHaveTag(tag, i)
 		if max != tag.lang {
@@ -520,7 +520,8 @@ func newMatcher(supported []Tag) *matcher {
 				return
 			}
 			hw := m.header(langID(want))
-			for _, v := range hh.max {
+			for _, ht := range hh.max {
+				v := *ht
 				if conf < v.conf {
 					v.conf = conf
 				}
@@ -580,7 +581,7 @@ func (m *matcher) getBest(want ...Tag) (got *haveTag, orig Tag, c Confidence) {
 				continue
 			}
 			for i := range h.exact {
-				have := &h.exact[i]
+				have := h.exact[i]
 				if have.tag.equalsRest(w) {
 					return have, w, Exact
 				}
@@ -591,7 +592,7 @@ func (m *matcher) getBest(want ...Tag) (got *haveTag, orig Tag, c Confidence) {
 			// Base language is not defined.
 			if h != nil {
 				for i := range h.exact {
-					have := &h.exact[i]
+					have := h.exact[i]
 					if have.tag.equalsRest(w) {
 						return have, w, Exact
 					}
@@ -609,11 +610,11 @@ func (m *matcher) getBest(want ...Tag) (got *haveTag, orig Tag, c Confidence) {
 		}
 		// Check for match based on maximized tag.
 		for i := range h.max {
-			have := &h.max[i]
+			have := h.max[i]
 			best.update(have, w, max.script, max.region)
 			if best.conf == Exact {
 				for have.nextMax != 0 {
-					have = &h.max[have.nextMax]
+					have = h.max[have.nextMax]
 					best.update(have, w, max.script, max.region)
 				}
 				return best.have, best.want, High