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Comments (4)

sunny0826 avatar sunny0826 commented on August 22, 2024 1

@marckhouzam @burmanm Thx for your feedback, this should be a historical problem and I will try to fix this issue.

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sunny0826 avatar sunny0826 commented on August 22, 2024

@gpstuff thx for you feedback

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burmanm avatar burmanm commented on August 22, 2024

This is a bug in the cobra completions, not in kubecm. I created a ticket and a PR..

spf13/cobra#1667

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marckhouzam avatar marckhouzam commented on August 22, 2024

The problem is probably that kubecm redirects stderr to stdout, which will break the shell completion system.
This has happened to others before 😄.
I believe this happens here:

cli.rootCmd.SetOutput(os.Stdout)

The SetOutput() function sets stderr and stdout to point to the same place. That function is deprecated in favor of the two functions SetOut() and SetErr() as you can see here: https://github.com/spf13/cobra/blob/master/command.go#L250-L268

If you really want to have stderr print to stdout, then you need to change it just for the __complete command within a PersistentPreRun

You can see some documentation about this here: https://github.com/spf13/cobra/blob/master/shell_completions.md#debugging

Making this difference between stderr and stdout for shell completion allows to print debugging information to stderr without breaking the completion scripts.

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