anchor.diff:      $('#fork-button').text(value);
     };
   
  +  // - - - - - - - - - - - - - - - - - - - - - - - -
  +
     var doFork = function() {
   
       // TODO: is docker-pull needed?
       //       pass param.id to image_puller_controller
   
  -    $.getJSON('/forker/fork', {
  +    var params = {
             id: param.id,
         avatar: param.avatar,
            tag: param.nowTag
  -    },
  -    function(data) {
  +    };
  +    $.getJSON('/forker/fork', params, function(data) {
         if (data.forked) {
           cd.newDojoDialog(data.id, 'from_fork');
         } else {
  
positive.code:     });
    };
  
    //- - - - - - - - - - - - - - -
  
    var deleteAllCurrentFiles = function() {
      $.each(cd.filenames(), function(_, filename) {
  
negative.code:     });
    };
  
    // - - - - - - - - - - - - - - - - - - - - - - - -
  
    var copyRevertFilesToCurrentFiles = function(visibleFiles) {
      var filename;
  