How do i use other flag parse tools ,like kingpin🤔

[dominicqi]

Question description
fiber.New() calls flag.Parse 。but when i use kingpin,they are in conflict.
i think the fiber.New() may should not call flag.Parse() . What do you think？
Could there be another solution?Sorry, I'm new to golang.
Code snippet (optional)

package main

import (
	"github.com/gofiber/fiber"
	"gopkg.in/alecthomas/kingpin.v2"
	"os"
)

func main()  {
	var testFlag string
	application := kingpin.New("demo", "demo")
	application.Flag("test","kinping flag").Default("test").StringVar(&testFlag)
	application.Parse(os.Args[1:])
	server := fiber.New()
	server.Listen(8080)
}

[welcome]

Thanks for opening your first issue here! 🎉 Be sure to follow the issue template!

[Fenny]

Fiber and other frameworks rely on flag.Parse. This problem could be on Kingpins end. Does it relate to this issue alecthomas/kingpin#194?

If you could provide an error log, we might be able to help out.

[dominicqi]

Fiber and other frameworks rely on flag.Parse. This problem could be on Kingpins end. Does it relate to this issue alecthomas/kingpin#194?

If you could provide an error log, we might be able to help out.

I edit the code snippet. if no flag set the server start success. but if i start with flag
./test --test=kingpin flag provided but not defined: -test Usage of ./test: -child is child process -prefork use prefork

[dominicqi]

I'm a little confused why prefork and child setting by flag? why not like other parameters like 'Banner' or 'Engine.xxx'. If someone use fiber , they have to set the flags,if they want change .It sounds a little strange.

[Fenny]

@dominicqi I created a PR with a possible fix, could you try it again with the master branch?

[dominicqi]

@dominicqi I created a PR with a possible fix, could you try it again with the master branch?

It not work.
if flag.Lookup(name) == nil always be true.
Lookup find flag reg by flag.Var。

Could we simple remove this two flag ?

I means change to settings?

emm, i see the prefork func. can not remove this two flag

[Fenny]

@dominicqi, we fixed this issue in v1.7.1
https://github.com/gofiber/fiber/releases/tag/v1.7.1

Could you update to latest version and tell me if it works?