IsConfirm generates error if response is not "y" about promptui HOT 9 OPEN

package main

import (
  "errors"
  "fmt"
  "strings"

  "github.com/manifoldco/promptui"
)

func main() {
  prompt := promptui.Prompt{
    Label:     "does this work?",
    IsConfirm: true,
    Default:   "y",
  }
  validate := func(s string) error {
    if len(s) == 1 && strings.Contains("YyNn", s) || prompt.Default != "" && len(s) == 0 {
      return nil
    }
    return errors.New("invalid input")
  }
  prompt.Validate = validate
  
  answer, err := prompt.Run()
  confirmed := !errors.Is(err, promptui.ErrAbort)
  if err != nil && confirmed {
    fmt.Println("ERROR: ", err)
    return
  }
 
  fmt.Printf("error <%v>, answer <%s> confirmed <%t>\n", err, answer, confirmed)
}

func confirm(label string) (bool, error) {
	val := func(input string) error {
		//if input == "" {
		//	return errors.New("input required")
		//}
		if len(input) > 3 {
			return errors.New("Please give a yes or no answer")
		}
		return nil
	}
	faintText := promptui.Styler(promptui.FGFaint)
	boldText := promptui.Styler(promptui.FGBold)
	greenText := promptui.Styler(promptui.FGGreen)
	redText := promptui.Styler(promptui.FGRed)
	defaultLabel := fmt.Sprintf("%s %s ", boldText(label), faintText("[y/N]"))

	template := promptui.PromptTemplates{
		Prompt:  defaultLabel,
		Valid:   defaultLabel,
		Invalid: fmt.Sprintf("%s %s ", redText(label), faintText("[y/N]")),
		Success: greenText(label) + " ",
	}

	prompt := promptui.Prompt{
		Validate:  val,
		Templates: &template,
	}
	result, err := prompt.Run()
	if err != nil {
		return false, err
	}
	return isConfirm(result), nil
}

// acceptable answers: y,yes,Y,YES,1
var confirmExp = regexp.MustCompile("(?i)y(?:es)?|1")

func isConfirm(confirm string) bool {
	return confirmExp.MatchString(confirm)
}

if err != nil {
  if err == promptui.ErrAbort {
    // deal with abort
  }

  // deal with error
}

if errors.Is(err, promptui.ErrAbort) {
  ...
}