Function pluginCompletion

pkg/cmd/plugin/plugin_completion.go:188–201

pluginCompletion deals with shell completion beyond the plugin name, it allows to complete plugin arguments and flags. It will look on $PATH for a specific executable file that will provide completions for the plugin in question. When called, this completion executable should print the completion c

(cmd *cobra.Command, args []string, toComplete string)

// named kubectl-get_all, the completion file should be named kubectl_complete-get_all.  The completion
// executable must have executable permissions set on it and must be on $PATH.
func pluginCompletion(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
	// Recreate the plugin name from the commandPath
	pluginName := strings.ReplaceAll(strings.ReplaceAll(cmd.CommandPath(), "-", "_"), " ", "-")

	path, found := lookupCompletionExec(pluginName)
	if !found {
		cobra.CompDebugln(fmt.Sprintf("Plugin %s does not provide a matching completion executable", pluginName), true)
		return nil, cobra.ShellCompDirectiveDefault
	}

	args = append(args, toComplete)
	cobra.CompDebugln(fmt.Sprintf("About to call: %s %s", path, strings.Join(args, " ")), true)
	return getPluginCompletions(path, args, os.Environ())
}

// lookupCompletionExec will look for the existence of an executable
// that can provide completion for the given plugin name.