old_contents: 'use strict';
  
  /**
   * Expose `plugin`.
   */
  module.exports = plugin;
  
  
  /**
   * Metalsmith plugin that sets a `rootPath` variable on each file's metadata.
   * This allows you to find relative paths in your templates easily.
   *
   * @return {Function}
   */
  function plugin(){
  
      return function(files, metalsmith, done){
  
          Object.keys(files).forEach(function(file){
              setImmediate(done);
  
              var re = /(\/)+/g;
  
              var rootPath = "";
              var a;
              while ((a = re.exec(file)) !== null) {
                  rootPath += "../";
              }
  
              files[file].rootPath = rootPath;
  
          });
      }
  }
new_contents: 'use strict';
  
  /**
   * Expose `plugin`.
   */
  module.exports = plugin;
  
  
  /**
   * Metalsmith plugin that sets a `rootPath` variable on each file's metadata.
   * This allows you to find relative paths in your templates easily.
   *
   * @return {Function}
   */
  function plugin(){
  
      return function(files, metalsmith, done){
  
          Object.keys(files).forEach(function(file){
              setImmediate(done);
  
              var re = /(\/|\\)+/g;
  
              var rootPath = "";
              var a;
              while ((a = re.exec(file)) !== null) {
                  rootPath += "../";
              }
  
              files[file].rootPath = rootPath;
  
          });
      }
  }
  
subject: update regex to work with windoze paths