[PATCH v1] psql: complete ALTER ROLE ... IN DATABASE ... RESET

Hi hackers,

As discussed, here's a patch to add psql tab-completion support for:

ALTER ROLE/USER <name> IN DATABASE <db> RESET ...

Changes:
- Add completion path for "... IN DATABASE <db> RESET"
- Offer GUC names and ALL after RESET
- Add tab-completion test coverage in src/bin/psql/t/010_tab_completion.pl

Testing:
- make -j8
- make check (all tests passed in my environment)

Patch attached.

Thanks,
xianbinzhu

On Sun, Mar 29, 2026 at 2:50 PM Xianbin Zhu <xianbin(dot)aaronzhu(at)gmail(dot)com>
wrote:

> Hi hackers,
>
> I'd like to work on a small psql tab-completion improvement.
>
> Problem:
> psql currently has a missing completion path for:
> ALTER ROLE <role> IN DATABASE <db> RESET ...
>
> There is an in-code TODO marker for this case in
> src/bin/psql/tab-complete.in.c.
>
> Proposal:
> - Add completion support after "... IN DATABASE <db> RESET"
> - Reuse existing completion behavior/style used by ALTER ROLE ... RESET
> - Add regression coverage in src/bin/psql/t/010_tab_completion.pl
>
> Non-goals:
> - No backend behavior changes
> - No SQL grammar changes
>
> If this direction looks good, I can send a patch.
>
> Thanks,
> xianbinzhu
>