Too verbose error message when using Validate

[mitar]

This might be nitpicking, but a simple program:

package main

import (
	"errors"

	"github.com/alecthomas/kong"
)

type Config struct{}

func (c Config) Validate() error {
	return errors.New("foobar")
}

func main() {
	var config Config
	kong.Parse(&config)
}

Outputs:

play: error: play: foobar

I find that double play in there ugly and unnecessary. Could it be removed?

[alecthomas]

For sure 👍

[mitar]

Any hint where would this be coming from? I tried to figure it out, but couldn't find it (yet).

[alecthomas]

I suspect that somewhere is using "FullCommand()" rather than "Command()"

[mitar]

So the issue comes from here. When node is application, it uses its name and prepends it. I would suggest that for application node nothing is prepended.

[mitar]

Can I do PR doing this?

[alecthomas]

Of course :)

[mitar]

I made a PR #368 to fix this.