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

2 uses

	golang.org/x/text/internal/language (current package)
		lookup.go#L284: 	return regionTypes[r]
		tables.go#L1054: var regionTypes = [359]uint8{

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)