source <(kubectl completion bash)
alias k="kubectl"
alias kcontext="kubectl config use-context"
kns() {
  if [[ $# -eq 0 ]]; then
    printf '%s\n' "$(kubectl config view --minify -o jsonpath='{.contexts[0].context.namespace}')"
  else
    local ns="${1?Namespace required}"
    kubectl config set-context --current --namespace "$ns"
    printf 'Switched current context to namespace: %s\n' "$ns"
  fi
}
_kns_completion() {
  local cur
  cur=${COMP_WORDS[COMP_CWORD]}
  COMPREPLY=( $(compgen -W "$(kubectl get namespaces -o name | sed 's|namespace/||')" -- "$cur") )
}
_kcontext_completion() {
  local cur
  cur=${COMP_WORDS[COMP_CWORD]}
  COMPREPLY=( $(compgen -W "$(kubectl config get-contexts -o name)" -- $cur) )
}
complete -F __start_kubectl k
complete -F _kns_completion kns
complete -F _kcontext_completion kcontext