From a4ca91ea18916c66fa3539c2fd19d8ba571ce7e8 Mon Sep 17 00:00:00 2001
From: Michael Paquier <michael@paquier.xyz>
Date: Mon, 8 Jun 2026 14:38:01 +0900
Subject: [PATCH] psql: Fix expanded aligned output

When a table's columns are narrower than the record header line, the
expanded aligned format produced misaligned output because the data
column width was not adjusted to match the record header width, leading
to output like:
+-[ RECORD 1 ]-+
| a | 10 |
| b | 20 |
+---+----+

This commit adjusts the output so as the column width match with the
header line, giving:
+-[ RECORD 1 ]-+
| a | 10       |
| b | 20       |
+---+----------+

Author: Pavel Stehule <pavel.stehule@gmail.com>
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://postgr.es/m/CAFj8pRCzGpsr9zTHbtTd4mGh2YPJqOEgLgt8JLiopuYA9_1xGw@mail.gmail.com
Backpatch-through: 14
---
 src/fe_utils/print.c               |  7 ++++---
 src/test/regress/expected/psql.out | 26 ++++++++++++++++++++++++++
 src/test/regress/sql/psql.sql      | 11 +++++++++++
 3 files changed, 41 insertions(+), 3 deletions(-)

diff --git a/src/fe_utils/print.c b/src/fe_utils/print.c
index 2d0f78b8a2d..15ea8fbc2d7 100644
--- a/src/fe_utils/print.c
+++ b/src/fe_utils/print.c
@@ -1346,9 +1346,10 @@ print_aligned_vertical(const printTableContent *cont,
 	}
 
 	/*
-	 * Calculate available width for data in wrapped mode
+	 * Determine data column width: fit output width in wrapped mode, or
+	 * ensure alignment with the record header line in aligned mode.
 	 */
-	if (cont->opt->format == PRINT_WRAPPED)
+	if (cont->opt->format == PRINT_WRAPPED || cont->opt->format == PRINT_ALIGNED)
 	{
 		unsigned int swidth,
 					rwidth = 0,
@@ -1420,7 +1421,7 @@ print_aligned_vertical(const printTableContent *cont,
 			if (width < rwidth)
 				width = rwidth;
 
-			if (output_columns > 0)
+			if (cont->opt->format == PRINT_WRAPPED && output_columns > 0)
 			{
 				unsigned int min_width;
 
diff --git a/src/test/regress/expected/psql.out b/src/test/regress/expected/psql.out
index 1cd4fea70c5..d92b671b71a 100644
--- a/src/test/regress/expected/psql.out
+++ b/src/test/regress/expected/psql.out
@@ -2674,6 +2674,32 @@ execute q;
 +------------------+-------------------+
 
 deallocate q;
+-- expanded output with short-width columns
+\pset border 2
+\pset expanded on
+create table psql_short_tab(a int, b int);
+insert into psql_short_tab values(10,20),(30,40);
+\pset format aligned
+select * from psql_short_tab;
++-[ RECORD 1 ]-+
+| a | 10       |
+| b | 20       |
++-[ RECORD 2 ]-+
+| a | 30       |
+| b | 40       |
++---+----------+
+
+\pset format wrapped
+select * from psql_short_tab;
++-[ RECORD 1 ]-+
+| a | 10       |
+| b | 20       |
++-[ RECORD 2 ]-+
+| a | 30       |
+| b | 40       |
++---+----------+
+
+drop table psql_short_tab;
 \pset linestyle ascii
 \pset border 1
 -- support table for output-format tests (useful to create a footer)
diff --git a/src/test/regress/sql/psql.sql b/src/test/regress/sql/psql.sql
index c24438e02dc..0cc96aacda0 100644
--- a/src/test/regress/sql/psql.sql
+++ b/src/test/regress/sql/psql.sql
@@ -416,6 +416,17 @@ execute q;
 
 deallocate q;
 
+-- expanded output with short-width columns
+\pset border 2
+\pset expanded on
+create table psql_short_tab(a int, b int);
+insert into psql_short_tab values(10,20),(30,40);
+\pset format aligned
+select * from psql_short_tab;
+\pset format wrapped
+select * from psql_short_tab;
+drop table psql_short_tab;
+
 \pset linestyle ascii
 \pset border 1