Method InitDefaultHelpFlag

command.go:1219–1232

InitDefaultHelpFlag adds default help flag to c. It is called automatically by executing the c or by calling help and usage. If c already has help flag, it will do nothing.

()

// It is called automatically by executing the c or by calling help and usage.
// If c already has help flag, it will do nothing.
func (c *Command) InitDefaultHelpFlag() {
	c.mergePersistentFlags()
	if c.Flags().Lookup(helpFlagName) == nil {
		usage := "help for "
		name := c.DisplayName()
		if name == "" {
			usage += "this command"
		} else {
			usage += name
		}
		c.Flags().BoolP(helpFlagName, "h", false, usage)
		_ = c.Flags().SetAnnotation(helpFlagName, FlagSetByCobraAnnotation, []string{"true"})
	}
}

// InitDefaultVersionFlag adds default version flag to c.
// It is called automatically by executing the c.