[Q] Exiting on help message.

[jmervine]

I apologize if this is obvious and I'm just missing it, but I'm trying to figure out how to os.Exit(0) when help is called via help, h, --help and -h. All print the help message, but none exit by default and I can't seem to find a simple way to for the exit. I attempted adding checking to my app.Action declaration, but that seems to be executed only if help isn't specified. This seems like something most applications would want to do by default.

Here's a simplified example -- http://play.golang.org/p/PEdNXSMvJ8.

Cheers and thanks in advance,
J

[jmervine]

I was able to get around this by copying the default HelpPrinter and adding an exit to the end, seems clunky though.

    cli.HelpPrinter = func (templ string, data interface{}) {
        w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
        t := template.Must(template.New("help").Parse(templ))
        err := t.Execute(w, data)
        if err != nil {
            panic(err)
        }
        w.Flush()
        os.Exit(0)
    }

Full example: http://play.golang.org/p/hQLeSGHAEv