code: func Fuzz(data []byte) int {
  	sel, err := cascadia.Compile(string(data))
  	if err != nil {
  		if sel != nil {
  			panic("sel != nil on error")
  		}
  		return 0
  	}
  	return 1
  }
docs: // Fuzz is the entrypoint used by the go-fuzz framework