local i = {}   function i.EmailTracking(frame)     local output = '';     local email = frame.args["email"] or '';     if mw.ustring.match(email,'@.*@') ~= nil then         output = '[[' .. 'Category:Listing with multiple email addresses]]<span class="phoneinfo" style="display:none;">MULTIPLE-EMAIL</span>';     end     if mw.title.getCurrentTitle().namespace ~= 0 then         output = '';     end     return output; end   return i;