code: func Discover(glob, dir string) ([]string, error) {
  	var err error
  
  	// Make the directory absolute if it isn't already
  	if !filepath.IsAbs(dir) {
  		dir, err = filepath.Abs(dir)
  		if err != nil {
  			return nil, err
  		}
  	}
  
  	return filepath.Glob(filepath.Join(dir, glob))
  }
docs: // Discover discovers plugins that are in a given directory.
  //
  // The directory doesn't need to be absolute. For example, "." will work fine.
  //
  // This currently assumes any file matching the glob is a plugin.
  // In the future this may be smarter about checking that a file is
  // executable and so on.
  //
  // TODO: test