kubestr breaks when KUBECONFIG points at multiple config files

[larsks]

kubectl supports setting KUBECONFIG to a colon-delimited list of configuration files (KUBECONFIG=/path/to/config1:/some/other/config:$HOME/.kube/config). This is also supported by the underlying client-go package.

kubestr falls over when KUBECONFIG is configured with mulitple config files:

$ kubestr
stat /home/lars/.kube/configs/default:/home/lars/.kube/configs/cluster1:/home/lars/.kube/configs/cluster2
Error: ...:: no such file or directory

It's possible to work around that by giving kubestr a KUBECONFIG of it's very own:

kubectl config view --flatten --minify > kubeconfig
KUBECONFIG=$PWD/kubeconfig kubestr

But it would be nice if kubestr would support the same semantics as kubectl.