panic: flag redefined

[hagen1778]

My urfave/cli version is

v2.23.0

Checklist

• Are you running the latest v2 release? The list of releases is here.
• Did you check the manual for your release? The v2 manual is here
• Did you perform a search about this problem? Here's the GitHub guide about searching.

Dependency Management

• My project is using go modules.
• My project is using vendoring.

Describe the bug

With ae8d932 urfave/cli/v2 starts to conflict with other dependencies which has the same flags. In my case, it is version flag exposed by both urfave/cli/v2 and one of my other dependencies. This broke a build once I get updated the library.

To reproduce

Create an app that has a defined version flag or imports any dependency which has the same flag. Then use urfave/cli/v2@2.23.0 and try to run the app.

Observed behavior

myapp flag redefined: version
panic: myapp flag redefined: version

Expected behavior

Do not interfere with other dependencies flags.

[dearchap]

@hagen1778 Can you set App.HideVersion to true so that the cli library doesnt append version flag ?

[hagen1778]

Thanks for quick response @dearchap! App.HideVersion helped.

[johejo]

For example, it confuses many users to panic just by importing github.com/golang/glog.

https://go.dev/play/p/WAxoXS_BHib