-- Calculates the width of the span box for [[Template:Flaglist]] -- based on the specified image size  local p = {}  function p.luawidth(size)  --For use within Lua  local w  if string.find(size,"^%d+x%d+px$") then -- width and height (eg. 20x10px)  -- use specified width  w = tonumber(string.match(size,"(%d+)x%d+px")) + 2 -- (2px for borders)  elseif string.find(size,"^%d+px$") then -- width only (eg. 20px)  -- use specified width  w = tonumber(string.match(size,"(%d+)px")) + 2  elseif string.find(size,"^x%d+px$") then -- height only (eg. x10px)  -- assume a width based on the height  local h = tonumber(string.match(size,"x(%d+)px"))  w = h * 2.2  w = math.floor(w+0.5) -- round to integer  else -- empty or invalid input  w = 25 -- default width for flagicons including borders  end  return tostring(w) end  function p.width(frame)  --For external use  return p.luawidth(frame.args[1]) end  return p