Fix command help subcommand

command.go

@@ -295,6 +295,17 @@ func (c *Command) startApp(ctx *Context) error {
 	return app.RunAsSubcommand(ctx)
 }
 
+// VisibleCommands returns a slice of the Commands with Hidden=false
+func (c *Command) VisibleCommands() []*Command {
+	var ret []*Command
+	for _, command := range c.Subcommands {
+		if !command.Hidden {
+			ret = append(ret, command)
+		}
+	}
+	return ret
+}
+
 // VisibleFlagCategories returns a slice containing all the visible flag categories with the flags they contain
 func (c *Command) VisibleFlagCategories() []VisibleFlagCategory {
 	if c.flagCategories == nil {