Revert "Fix how to do defaults in app.go"

This reverts commit 8906567dc2ad52fd31c50cf02fa606505a1323ba.

app.go

@@ -121,7 +121,6 @@ func NewApp() *App {
 		Action:       helpCommand.Action,
 		Compiled:     compileTime(),
 		Writer:       os.Stdout,
-		ExitErrHandler: HandleExitCoder,
 	}
 }
 
@@ -211,7 +210,7 @@ func (a *App) Run(arguments []string) (err error) {
 	if err != nil {
 		if a.OnUsageError != nil {
 			err := a.OnUsageError(context, err, false)
-			a.ExitErrHandler(err)
+			a.handleExitCoder(err)
 			return err
 		}
 		fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error())
@@ -244,8 +243,9 @@ func (a *App) Run(arguments []string) (err error) {
 	if a.Before != nil {
 		beforeErr := a.Before(context)
 		if beforeErr != nil {
+			fmt.Fprintf(a.Writer, "%v\n\n", beforeErr)
 			ShowAppHelp(context)
-			a.ExitErrHandler(beforeErr)
+			a.handleExitCoder(beforeErr)
 			err = beforeErr
 			return err
 		}
@@ -267,7 +267,7 @@ func (a *App) Run(arguments []string) (err error) {
 	// Run default Action
 	err = HandleAction(a.Action, context)
 
-	a.ExitErrHandler(err)
+	a.handleExitCoder(err)
 	return err
 }
 
@@ -334,7 +334,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 	if err != nil {
 		if a.OnUsageError != nil {
 			err = a.OnUsageError(context, err, true)
-			a.ExitErrHandler(err)
+			a.handleExitCoder(err)
 			return err
 		}
 		fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error())
@@ -356,7 +356,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 		defer func() {
 			afterErr := a.After(context)
 			if afterErr != nil {
-				a.ExitErrHandler(err)
+				a.handleExitCoder(err)
 				if err != nil {
 					err = NewMultiError(err, afterErr)
 				} else {
@@ -369,7 +369,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 	if a.Before != nil {
 		beforeErr := a.Before(context)
 		if beforeErr != nil {
-			a.ExitErrHandler(beforeErr)
+			a.handleExitCoder(beforeErr)
 			err = beforeErr
 			return err
 		}
@@ -387,7 +387,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 	// Run default Action
 	err = HandleAction(a.Action, context)
 
-	a.ExitErrHandler(err)
+	a.handleExitCoder(err)
 	return err
 }
 
@@ -468,6 +468,14 @@ func (a *App) appendFlag(flag Flag) {
 	}
 }
 
+func (a *App) handleExitCoder(err error) {
+	if a.ExitErrHandler != nil {
+		a.ExitErrHandler(err)
+	} else {
+		HandleExitCoder(err)
+	}
+}
+
 // Author represents someone who has contributed to a cli project.
 type Author struct {
 	Name  string // The Authors name