local p = {}  local function getArgNums(args) 	-- Get the keys of the numerical arguments that are present. 	local nums = {} 	local tinsert = table.insert 	for k, v in pairs(args) do 		if type(k) == 'number' then 			tinsert(nums, k) 		end 	end 	table.sort(nums) 	return nums end  local function makeToolbarItems(args) 	local nums = getArgNums(args) 	local sep = (args.separator or 'pipe') .. '-separator' 	sep = mw.message.new(sep):plain() 	local ret = {} 	local tinsert = table.insert 	for i, v in ipairs(nums) do 		tinsert(ret, args[v]) 	end 	if #ret > 0 then 		return table.concat(ret, sep) 	end end  function p._main(args) 	local toolbarItems = makeToolbarItems(args) 	if not toolbarItems then return '' end -- Return the blank string if no arguments were specified, rather than returning empty brackets 	return mw.ustring.format( 		'<span class="plainlinks%s"%s>(%s)</span>', 		type(args.class) == 'string' and ' ' .. args.class or '', 		type(args.style) == 'string' and mw.ustring.format(' style="%s"', args.style) or '', 		toolbarItems 	) end  function p.main(frame) 	-- If called via #invoke, use the args passed into the invoking template. 	-- Otherwise, for testing purposes, assume args are being passed directly in. 	local origArgs 	if frame == mw.getCurrentFrame() then 		origArgs = frame:getParent().args 		for k, v in pairs(frame.args) do 			origArgs = frame.args 			break 		end 	else 		origArgs = frame 	end 	-- Strip whitespace and remove nil values 	local args = {} 	for k, v in pairs(origArgs) do 		if type(v) == 'string' then 			v = mw.text.trim(v) 		end 		if v ~= '' then 			args[k] = v 		end 	end 	return p._main(args) end  return p