Fix HideHelp

app.go

@@ -275,7 +275,9 @@ func (a *App) RunContext(ctx context.Context, arguments []string) (err error) {
 	cCtx := NewContext(a, set, &Context{Context: ctx})
 	if nerr != nil {
 		_, _ = fmt.Fprintln(a.Writer, nerr)
-		_ = ShowAppHelp(cCtx)
+		if !a.HideHelp {
+			_ = ShowAppHelp(cCtx)
+		}
 		return nerr
 	}
 	cCtx.shellComplete = shellComplete
@@ -296,7 +298,9 @@ func (a *App) RunContext(ctx context.Context, arguments []string) (err error) {
 				fmt.Fprintf(a.Writer, suggestion)
 			}
 		}
-		_ = ShowAppHelp(cCtx)
+		if !a.HideHelp {
+			_ = ShowAppHelp(cCtx)
+		}
 		return err
 	}
 

app_test.go

@@ -1873,31 +1873,67 @@ func TestApp_Run_CommandSubcommandHelpName(t *testing.T) {
 }
 
 func TestApp_Run_Help(t *testing.T) {
-	var helpArguments = [][]string{{"boom", "--help"}, {"boom", "-h"}, {"boom", "help"}}
-
-	for _, args := range helpArguments {
-		t.Run(fmt.Sprintf("checking with arguments %v", args), func(t *testing.T) {
+	var tests = []struct {
+		helpArguments []string
+		hideHelp      bool
+		wantContains  string
+		wantErr       error
+	}{
+		{
+			helpArguments: []string{"boom", "--help"},
+			hideHelp:      false,
+			wantContains:  "boom - make an explosive entrance",
+		},
+		{
+			helpArguments: []string{"boom", "-h"},
+			hideHelp:      false,
+			wantContains:  "boom - make an explosive entrance",
+		},
+		{
+			helpArguments: []string{"boom", "help"},
+			hideHelp:      false,
+			wantContains:  "boom - make an explosive entrance",
+		},
+		{
+			helpArguments: []string{"boom", "--help"},
+			hideHelp:      true,
+			wantErr:       fmt.Errorf("flag: help requested"),
+		},
+		{
+			helpArguments: []string{"boom", "-h"},
+			hideHelp:      true,
+			wantErr:       fmt.Errorf("flag: help requested"),
+		},
+		{
+			helpArguments: []string{"boom", "help"},
+			hideHelp:      true,
+			wantContains:  "boom I say!",
+		},
+	}
 
+	for _, tt := range tests {
+		t.Run(fmt.Sprintf("checking with arguments %v", tt.helpArguments), func(t *testing.T) {
 			buf := new(bytes.Buffer)
 
 			app := &App{
-				Name:   "boom",
-				Usage:  "make an explosive entrance",
-				Writer: buf,
+				Name:     "boom",
+				Usage:    "make an explosive entrance",
+				Writer:   buf,
+				HideHelp: tt.hideHelp,
 				Action: func(c *Context) error {
 					buf.WriteString("boom I say!")
 					return nil
 				},
 			}
 
-			err := app.Run(args)
-			if err != nil {
-				t.Error(err)
+			err := app.Run(tt.helpArguments)
+			if err != nil && err.Error() != tt.wantErr.Error() {
+				t.Errorf("want err: %s, did note %s\n", tt.wantErr, err)
 			}
 
 			output := buf.String()
 
-			if !strings.Contains(output, "boom - make an explosive entrance") {
+			if !strings.Contains(output, tt.wantContains) {
 				t.Errorf("want help to contain %q, did not: \n%q", "boom - make an explosive entrance", output)
 			}
 		})

command.go

@@ -125,7 +125,9 @@ func (c *Command) Run(ctx *Context) (err error) {
 				fmt.Fprintf(cCtx.App.Writer, suggestion)
 			}
 		}
-		_ = ShowCommandHelp(cCtx, c.Name)
+		if !c.HideHelp {
+			_ = ShowCommandHelp(cCtx, c.Name)
+		}
 		return err
 	}
 
@@ -135,7 +137,9 @@ func (c *Command) Run(ctx *Context) (err error) {
 
 	cerr := cCtx.checkRequiredFlags(c.Flags)
 	if cerr != nil {
-		_ = ShowCommandHelp(cCtx, c.Name)
+		if !c.HideHelp {
+			_ = ShowCommandHelp(cCtx, c.Name)
+		}
 		return cerr
 	}
 

suggestions_test.go

@@ -124,7 +124,7 @@ func ExampleApp_Suggest() {
 	app := &App{
 		Name:                  "greet",
 		Suggest:               true,
-		HideHelp:              true,
+		HideHelp:              false,
 		HideHelpCommand:       true,
 		CustomAppHelpTemplate: "(this space intentionally left blank)\n",
 		Flags: []Flag{
@@ -149,7 +149,6 @@ func ExampleApp_Suggest_command() {
 	app := &App{
 		Name:                  "greet",
 		Suggest:               true,
-		HideHelp:              true,
 		HideHelpCommand:       true,
 		CustomAppHelpTemplate: "(this space intentionally left blank)\n",
 		Flags: []Flag{
@@ -162,6 +161,7 @@ func ExampleApp_Suggest_command() {
 		Commands: []*Command{
 			{
 				Name:               "neighbors",
+				HideHelp:           false,
 				CustomHelpTemplate: "(this space intentionally left blank)\n",
 				Flags: []Flag{
 					&BoolFlag{Name: "smiling"},