Re: psql: Fix tab completion for VACUUM option values

Hi,

On Mon, Dec 22, 2025 at 9:15 AM Yugo Nagata <nagata@sraoss.co.jp> wrote:
>
> Hi,
>
> I noticed that tab completion for VACUUM option values is broken.
> For example, ON or OFF should be suggested after
> "VACUUM (VERBOSE", but this currently does not work.
>
> I believe this issue was introduced by commit 8a3e4011, which added
> tab completion for the ONLY option of VACUUM and ANALYZE, along with
> some code simplification using MatchAnyN.
>
> In addition, tab completion for the ONLY option is insufficient:
> "ONLY" is not suggested immediately after a completed option list,
> for example in "VACUUM (...) ONLY" or "ANALYZE (...) ONLY".
>
> I've attached a patch to fix these issues.
>

I agree with your analysis. I think the patch should be backpatched to v18

FYI due to the simplification by using MatchAnyN, vacuum options are
suggested at inappropriate positions:

postgres(1:2376453)=# vacuum (verbose on) freeze
ANALYZE              ONLY                 VERBOSE
information_schema.  public.              t

Given that it's not common usage, we can live with that.

Regards,

--
Masahiko Sawada
Amazon Web Services: https://aws.amazon.com