Module:Lang name

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function getLang( targetLang, inLang )
	return mw.language.fetchLanguageName( targetLang, inLang )
end

return {
	fromTemplate = function ( frame )
		local args = frame.args
		return getLang( args[ 1 ], args[ 2 ] or args[ 1 ] )
	end,
	getLang = getLang
}