Просмотр исходного текста страницы Module:UrlEncoding

-- Way to encode URLs so they don't break things
return {
    encode = function (frame)
        str = frame.args[1]
        if (str) then
            str = string.gsub (str, "\n", "\r\n")
            str = string.gsub (str, "([^%w ])",
                function (c) return string.format ("%%%02X", string.byte(c)) end)
            str = string.gsub (str, " ", "+")
        end
        return str
    end,
    decode = function (frame)
        str = frame.args[1]
        str = string.gsub (str, "+", " ")
        str = string.gsub (str, "%%(%x%x)",
            function(h) return string.char(tonumber(h,16)) end)
        str = string.gsub (str, "\r\n", "\n")
        return str
    end
}