Module:Ping

local p = {}

local function makeError(msg) msg ='Error in Template:Ping: ' .. msg return mw.text.tag('strong', {['class']='error'}, msg) end

function p.ping(frame) local origArgs = frame:getParent.args local args = {} local maxArg = 1 local usernames = 0 for k, v in pairs(origArgs) do		if type(k) == 'number' then if mw.ustring.match(v,'%S') then if k > maxArg then maxArg = k end usernames = usernames + 1 local title = mw.title.new(v) if not title then return makeError('Input contains forbidden characters.') end args[k] = title.rootText end elseif v == '' and k:sub(0,5) == 'label' then args[k] = '&#x200B;' else args[k] = v		end end

if usernames > (tonumber(frame.args.max) or 50) then return makeError(string.format( 'More than %s names specified.', tostring(frame.args.max or 50) ))	else if usernames < 1 then if frame.args.example then args[1] = frame.args.example else return makeError('Username not given.') end end args['label1'] = args['label1'] or args['label'] local isfirst = true local outStr = args['prefix'] or '@' for i = 1, maxArg do			if args[i] then if isfirst then isfirst = false else if ( (usernames > 2) or ((usernames == 2) and (args['c'] == '')) ) then outStr = outStr..', ' end if i == maxArg then outStr = outStr..' '..(args['c'] or 'and') .. ' ' end end outStr = string.format(					'%s%s',					outStr,					args[i],					args['label'..tostring(i)] or args[i]				) end end outStr = outStr..(args['p'] or ':') return mw.text.tag('span', {['class']='template-ping'}, outStr) end end

return p