GetEnvDefinedEditor.go

// https://go.dev/play/p/lrWohXeh1vG
// https://goplay.tools/snippet/lrWohXeh1vG

func getOsDefaultEditor() string {
	switch runtime.GOOS {
	case "darwin":
		return "textedit"
	case "linux", "freebsd", "netbsd", "openbsd":
		return "vi"
	case "windows":
		return "notepad"
	default:
		return ""
	}
}

func GetEnvDefinedEditorOrDefault(defaultWhenNotFound string) string {
	ed := os.Getenv("EDITOR")
	if len(ed) > 0 {
		return ed
	}
	return defaultWhenNotFound
}

func GetEnvDefinedEditor() string {
	return GetEnvDefinedEditorOrDefault(getOsDefaultEditor())
}