Exit code

[yushion-yang]

package main

import (
"log"
"os"

"github.com/urfave/cli"
)

func main() {
app := cli.NewApp()
app.Flags = []cli.Flag{
cli.BoolTFlag{
Name: "ginger-crouton",
Usage: "is it in the soup?",
},
}
app.Action = func(ctx *cli.Context) error {
if !ctx.Bool("ginger-crouton") {
return cli.NewExitError("it is not in the soup", 86)
}
return nil
}

err := app.Run(os.Args)
if err != nil {
log.Fatal(err)
}
}

the line of 13 should be cli.BoolFlag{ not cli.BoolTFlag{

[xordspar0]

This is about the exit code section of the README.

I agree. The purpose of this example is to show that you can exit with an error code if a flag is unspecified, but with the code as it is, the only way to cause a non-zero exit is by adding the flag --ginger-crouton=false, which is not explained in the example.

I made a PR for this change: #823