func golang.org/x/text/internal/language.MustParse

2 uses

	golang.org/x/text/internal/language (current package)
		tags.go#L9: func MustParse(s string) Tag {

	golang.org/x/text/internal/language/compact
		compact.go#L59: 		specialTags[i] = language.MustParse(t)

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