complete: complete [-abcdefgjksuv] [-pr] [-o option] [-A action] [-G globpat] [-W wordlist] [-F function] [-C command] [-X filterpat] [-P prefix] [-S suffix] [name ...]
Specify how arguments are to be completed by Readline.
For each NAME, specify how arguments are to be completed. If no options are supplied, existing completion specifications are printed in a way that allows them to be reused as input.
When completion is attempted, the actions are applied in the order the uppercase-letter options are listed above.
Exit Status:
Returns success unless an invalid option is supplied or an error occurs.