local i = {}   function i.EmailTracking(frame)     local output = '';     local email = frame.args["email"] or '';     local demo = frame.args["demo"] or '';     local catprefix = '';      if mw.ustring.match(email,'@.*@') ~= nil then         if demo == 'true' then             catprefix = ':';         end         output = '[[' .. catprefix .. 'Catégorie:Listing avec plusieurs adresses email]]<span class="mailinfo debuginfo" style="display:none;">PLUSIEURS-ADRESSES-EMAIL</span>';     end     if mw.title.getCurrentTitle().namespace ~= 0 and demo == '' then         output = '';     end     return output; end   return i;