kubectl Completion not working for `kubectl config set-context --current <namespace>`

What happened: When using zsh-Autocompletion the autocompletion defaults to directories for kubectl config set-context --current --namespace

What you expected to happen: The command should autocomplete with namespaces

How to reproduce it (as minimally and precisely as possible):

kubectl config set-context --current --namespace Anything else we need to know?:

Environment:

Kubernetes client and server versions (use kubectl version): Client Version: v1.29.2 Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3 Server Version: v1.29.2
Cloud provider or hardware configuration:
OS (e.g: cat /etc/os-release):

Feb 21 '24 17:02 jheyduk

I confirm this missing functionality. This is because the kubectl config set-context command redefines its own namespace flag and we didn't add shell completion for it.

Until this is fixed, a workaround (slightly annoying) is to instead use the global --namespace flag by putting it before the set-context command:

$ kubectl config --namespace <TAB>
ns1   ns2    ns3
$ kubectl config --namespace ns2 set-context --current <ENTER>
Context "my-context" modified.

# This also works
$ kubectl config --namespace <TAB> set-context --current 
ns1   ns2    ns3