code: func blocklistItem(name string) string {
  	base := filepath.Base(name)
  
  	for _, p := range prefixBlocklist {
  		if strings.HasPrefix(base, p) {
  			return p
  		}
  	}
  
  	return ""
  }
docs: // blocklistItem returns the name of the blocklist item preventing the given
  // file-name from being tracked, or an empty string, if there is none.