fix(prompter): use os.lookupenv for accessible prompter

internal/prompter/prompter.go

@@ -3,6 +3,7 @@ package prompter
 import (
 	"fmt"
 	"os"
+	"slices"
 	"strings"
 
 	"github.com/AlecAivazis/survey/v2"
@@ -43,17 +44,10 @@ type Prompter interface {
 }
 
 func New(editorCmd string, stdin ghPrompter.FileReader, stdout ghPrompter.FileWriter, stderr ghPrompter.FileWriter) Prompter {
-	accessiblePrompterValue := os.Getenv("GH_SPEECH_SYNTHESIZER_FRIENDLY_PROMPTER")
-	switch accessiblePrompterValue {
-	case "", "false", "0", "no":
-		return &surveyPrompter{
-			prompter:  ghPrompter.New(stdin, stdout, stderr),
-			stdin:     stdin,
-			stdout:    stdout,
-			stderr:    stderr,
-			editorCmd: editorCmd,
-		}
-	default:
+	accessiblePrompterValue, accessiblePrompterIsSet := os.LookupEnv("GH_SPEECH_SYNTHESIZER_FRIENDLY_PROMPTER")
+	falseyValues := []string{"false", "0", "no", ""}
+
+	if accessiblePrompterIsSet && !slices.Contains(falseyValues, accessiblePrompterValue) {
 		return &speechSynthesizerFriendlyPrompter{
 			stdin:     stdin,
 			stdout:    stdout,
@@ -61,6 +55,14 @@ func New(editorCmd string, stdin ghPrompter.FileReader, stdout ghPrompter.FileWr
 			editorCmd: editorCmd,
 		}
 	}
+
+	return &surveyPrompter{
+		prompter:  ghPrompter.New(stdin, stdout, stderr),
+		stdin:     stdin,
+		stdout:    stdout,
+		stderr:    stderr,
+		editorCmd: editorCmd,
+	}
 }
 
 type speechSynthesizerFriendlyPrompter struct {

internal/prompter/speech_synthesizer_friendly_prompter_test.go

@@ -432,7 +432,6 @@ func TestSurveyPrompter(t *testing.T) {
 	require.NoError(t, err)
 	t.Cleanup(func() { testCloser(t, console) })
 
-	t.Setenv("GH_SPEECH_SYNTHESIZER_FRIENDLY_PROMPTER", "")
 	// Using echo as the editor command here because it will immediately exit
 	// and return no input.
 	p := prompter.New("echo", console.Tty(), console.Tty(), console.Tty())