# that they are not substituted for their corresponding commands in shell
  # scripts. By setting "expand_aliases", we enable alias expansion in
  # non-interactive shells as well.
  shopt -s expand_aliases
else
  echo '==TFCI==: Error: Cannot find path to grealpath or gstat'
  echo 'TF CI scripts require GNU core utilties to be installed. Please make'
  echo 'sure they are present on your system and try again.'

	return kubeadm.GenBashCompletion(out)
}

func runCompletionZsh(out io.Writer, kubeadm *cobra.Command) error {
	zshInitialization := `
__kubeadm_bash_source() {
	alias shopt=':'
	alias _expand=_bash_expand
	alias _complete=_bash_comp
	emulate -L sh
	setopt kshglob noshglob braceexpand

	source "$@"
}

__kubeadm_type() {
	# -t is not supported by zsh

				dbopt = dboff
				heopt = heoff
			} else {
				// older toolchain: we have to say nothing in order to
				// get a no-ASLR binary.
				dbopt = ""
				heopt = ""
			}
		}
		if dbopt != "" {
			argv = append(argv, "-Wl,"+dbopt)
		}
		// enable high-entropy ASLR on 64-bit.
		if ctxt.Arch.PtrSize >= 8 && heopt != "" {
			argv = append(argv, "-Wl,"+heopt)
		}

		}
	}

	if c.EmitZshCompletion {

		// Constants used in zsh completion file
		zshInitialization := `#compdef ` + root.Name() + `

__istio_bash_source() {
	alias shopt=':'
	alias _expand=_bash_expand
	alias _complete=_bash_comp
	emulate -L sh
	setopt kshglob noshglob braceexpand
	source "$@"
}
__istio_type() {
	# -t is not supported by zsh
	if [ "$1" == "-t" ]; then

kup|open|op|passwd|paste|pathchk|ping|pkill|popd|pr|printcap|printenv|printf|ps|pushd|pv|pwd|quota|quotacheck|quotactl|ram|rar|rcp|read|readarray|readonly|reboot|rename|renice|remsync|rev|rm|rmdir|rsync|screen|scp|sdiff|sed|seq|service|sftp|shift|shopt|shutdown|sleep|slocate|sort|source|split|ssh|stat|strace|su|sudo|sum|suspend|sync|tail|tar|tee|test|time|timeout|times|touch|top|traceroute|trap|tr|tsort|tty|type|ulimit|umask|umount|unalias|uname|unexpand|uniq|units|unrar|unshar|uptime|useradd|us...

      build/run.sh hack/_update-generated-proto-bindings-dockerized.sh "${apis[@]}"
    fi
}

#
# main
#

function list_codegens() {
    (
        shopt -s extdebug
        declare -F \
            | cut -f3 -d' ' \
            | grep "^codegen::" \
            | while read -r fn; do declare -F "$fn"; done \
            | sort -n -k2 \
            | cut -f1 -d' ' \