Obsolete bash completion example (kubernetes)... and use a better example anyway

[rfay]

The current [bash_completions.md]
(https://github.com/spf13/cobra/blob/master/bash_completions.md)

• uses a very complex example (kubernetes) and also
• Has the wrong import ("github.com/GoogleCloudPlatform/kubernetes/pkg/kubectl/cmd"
  ) and code (it's shifted over time)

And it might be best to scale back the initial statement "is incredibly easy", since I'm a seasoned developer and can make no sense of the example at all, as it uses custom kube stuff that has moved around and doesn't seem relevant.

A basic example on a simpler go repo would work a lot better.

Thanks!

[rfay]

Of course this is really easy. In our situation, we have a command RootCmd which has all the other commands added to it. Seems like an easy example like this could just be included. Works perfectly, thanks.

func main() {
	err := cmd.RootCmd.GenBashCompletionFile("bin/ddev_completion.sh")

	util.CheckErr(err)
}

[n10v]

/cc @eparis

[eparis]

@rfay Ha. Hard to argue. I wrote the bash completions stuff so I could use it in kube. At the time it seemed so 'simple'. I'd love a PR that makes an actually simple example.

[dfong]

it may be simple, but it is not self-explanatory. would be helpful to have an explanation of how to generalize it to my own command.

[menuka94]

It would be great if someone could provide an auto-completion example for a custom command :)

[GodloveD]

+1 would love to see a generic example

[github-actions]

This issue is being marked as stale due to a long period of inactivity