Re: psql: Fix tab completion for VACUUM option values

On Mon, Dec 22, 2025 at 5:37 PM Yugo Nagata <nagata@sraoss.co.jp> wrote:
>
> On Mon, 22 Dec 2025 13:55:59 -0800
> Masahiko Sawada <sawada.mshk@gmail.com> wrote:
>
> > 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
>
> Thank you for your review! I agree that this 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.
>
> Similar inappropriate suggestions can occur in other cases where
> MatchAnyN is used. For example:
>
> postgres=# truncate only t cascade restart identity
> CASCADE   RESTRICT

Right.

I've pushed the patch.

Regards,

--
Masahiko Sawada
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