function map(feature, layer) {
  var name = feature.properties.name;
  var desc = feature.properties.description;
  var urla = desc.match(/\[\[(.+)\]\]/g);
  var url;
    if (urla !== null){
      url = urla[0].substr(2, urla[0].length-4);
    }
  layer.bindPopup(`<h3>${name}</h3><p>${desc.replace(/\n/g, '<br>').replace(/\[\[(.+)\]\]/g, `<a href=\"${url}\">${url}</a>`)}</p>`);
  
  var Layer = desc.split("\n")[0];
  return L.divIcon({
    html: '',
    className:'marker',
    iconSize: [10, 10]
  }),
  console.log(Layer);
}
Lumap.load("mymap", "sakata.umap", map);