using config file by default

[namsral]

using config file by default

[namsral]

Create a new FlagSet when you want to catch the error, working example:

package main

import (
	"fmt"
	"log"
	"os"

	"github.com/namsral/flag"
)

func main() {
	var (
		age    int
		config string
	)

	f := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
	f.IntVar(&age, "age", 0, "age value")
	f.StringVar(&config, flag.DefaultConfigFlagname, "gopher.conf", "path to config file")
	if err := f.Parse(os.Args[1:]); err != nil {
		log.Fatal(err)
	}

	fmt.Print("age:", age)
}

[namsral]

I agree, this is unexpected behaviour and therefore a bug.

Can you confirm d6e73b7 from the parse-default-config-file branch fixes your issue?

[amitu]

It does. Kind of. Problem: If the setting file is missing, it goes through without complaining.

[namsral]

Please try 71ceffb.

I was going for mainstream cli behaviour; traverse common config paths and silently fail when none are available but that would be out of the scope of this project.

[amitu]

In this case 1. it picks up the file if present, 2. it fails if such file is not present (without any error message), and 3. does not allow me to overwrite config file from command line (it does not show --config as option with I do -h).

[amitu]

This works exactly how I want. Thanks :-)