#compdef kubectx kctx=kubectx

local KUBECTX="${HOME}/.kube/kubectx"
PREV=""
if [ -f "$KUBECTX" ]; then
    # show '-' only if there's a saved previous context
    local PREV=$(cat "${KUBECTX}")
    _arguments "1: :((- \
        $(kubectl config get-contexts --output='name')))"
else
    _arguments "1: :($(kubectl config get-contexts --output='name'))"
fi