Tab completion for large objects

On 2025/07/09 3:50, Dagfinn Ilmari Mannsåker wrote:

Hi hackers,

I noticed that psql's tab completion suggested TO immediately after
GRANT ... ON LARGE OBJECT, and not after ON LARGE OBJECT <oid>. This is
because LARGE OBJECT is the only two-word object type, so it thinks
LARGE is the object type and OBJECT is the name. Attached are three
patches that address this and other LO-related tab completion issues:

1. Tab complete OBJECT after GRANT|REVOKE ... ON LARGE, and TO/FROM
after GRANT|REVOKE ... ON LARGE OBJECT

Thanks for the patches!

Regarding the 0001 patch, Nagata-san already proposed a similar patch in [1]/messages/by-id/20250611135737.bb7d3135141248819704ebca@sraoss.co.jp.
His version handles not only "LARGE OBJECT" but also another two-word object type,
"FOREIGN SERVER".

Regards,

[1]: /messages/by-id/20250611135737.bb7d3135141248819704ebca@sraoss.co.jp

--
Fujii Masao
NTT DATA Japan Corporation

On Wed, Jul 9, 2025 at 7:46 PM Fujii Masao <masao.fujii@oss.nttdata.com> wrote:

On 2025/07/09 3:50, Dagfinn Ilmari Mannsåker wrote:

Hi hackers,

I noticed that psql's tab completion suggested TO immediately after
GRANT ... ON LARGE OBJECT, and not after ON LARGE OBJECT <oid>. This is
because LARGE OBJECT is the only two-word object type, so it thinks
LARGE is the object type and OBJECT is the name. Attached are three
patches that address this and other LO-related tab completion issues:

1. Tab complete OBJECT after GRANT|REVOKE ... ON LARGE, and TO/FROM
after GRANT|REVOKE ... ON LARGE OBJECT

Thanks for the patches!

Regarding the 0001 patch, Nagata-san already proposed a similar patch in [1].
His version handles not only "LARGE OBJECT" but also another two-word object type,
"FOREIGN SERVER".

I think it's worth applying patch 0002 and part of 0001, so I've merged
those changes into a single patch. Patch attached. Any thoughts?

+               else if (TailMatches("LARGE"))
+                       COMPLETE_WITH("OBJECT");

It seems the "ALTER DEFAULT PRIVILEGES ... LARGE" case was missed
here. In that context, we should complete with "OBJECTS" instead of
"OBJECT". I've fixed that in the patch.

As for patch 0003, I'm not sure it adds much value. It's probably hard
for most users to choose the correct OID from the list of large object
OIDs provided by tab-completion.

Regards,

--
Fujii Masao

On Sun, Jul 27, 2025 at 4:00 PM Fujii Masao <masao.fujii@gmail.com> wrote:

I think it's worth applying patch 0002 and part of 0001, so I've merged
those changes into a single patch. Patch attached. Any thoughts?

+               else if (TailMatches("LARGE"))
+                       COMPLETE_WITH("OBJECT");

It seems the "ALTER DEFAULT PRIVILEGES ... LARGE" case was missed
here. In that context, we should complete with "OBJECTS" instead of
"OBJECT". I've fixed that in the patch.

Attached is the rebased version of the patch.

Regards,

--
Fujii Masao

On Oct 23, 2025, at 15:22, Fujii Masao <masao.fujii@gmail.com> wrote:

On Sun, Jul 27, 2025 at 4:00 PM Fujii Masao <masao.fujii@gmail.com> wrote:

I think it's worth applying patch 0002 and part of 0001, so I've merged
those changes into a single patch. Patch attached. Any thoughts?

+               else if (TailMatches("LARGE"))
+                       COMPLETE_WITH("OBJECT");

It seems the "ALTER DEFAULT PRIVILEGES ... LARGE" case was missed
here. In that context, we should complete with "OBJECTS" instead of
"OBJECT". I've fixed that in the patch.

Attached is the rebased version of the patch.

Regards,

--
Fujii Masao
<v3-0001-psql-Improve-tab-completion-for-large-object.patch>

The code change is solid. One tidy comment on the commit subject and message:

```
Subject: [PATCH v3] psql: Improve tab completion for large object.
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This commit enhances psql's tab completion support for a large object:
```

I think we can use “large objects” in the both places. Because completion can be “OBJECT” or “OBJECTS”. And a comment uses “objects”:

```
/*
* Complete "GRANT/REVOKE * ON DATABASE/DOMAIN/..." with a list of
- * appropriate objects.
+ * appropriate objects or keywords.
```

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/

On Thu, Oct 23, 2025 at 6:23 PM Chao Li <li.evan.chao@gmail.com> wrote:

The code change is solid. One tidy comment on the commit subject and message:

I've updated the commit message as suggested and pushed the patch. Thanks!

Regards,

--
Fujii Masao

Fujii Masao <masao.fujii@gmail.com> writes:

On Thu, Oct 23, 2025 at 6:23 PM Chao Li <li.evan.chao@gmail.com> wrote:

The code change is solid. One tidy comment on the commit subject and message:

I've updated the commit message as suggested and pushed the patch. Thanks!

Thanks!

- ilmari