def excluded?(filename)
      exclude.each do |f|
        f += '**/*' if f.end_with? '/'
        return true if File.fnmatch(f, filename, File::FNM_EXTGLOB | File::FNM_PATHNAME)
      end
      false
    end
def excluded?(filename)
      exclude.each do |f|
        f += '**/*' if f.end_with? '/'
        return true if File.fnmatch(f, filename, File::FNM_EXTGLOB | File::FNM_PATHNAME)
      end
      false
    end
Helper to determine if a filename is excluded according to the exclude configuration parameter.

 @return [Boolean]