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Subject: BUG #19539: psql 17.6 on Windows 11 prints random garbage characters
 in Russian localized output of \d
To: pgsql-bugs@lists.postgresql.org
From: PG Bug reporting form <noreply@postgresql.org>
Cc: adyakovam@gmail.com
Reply-To: adyakovam@gmail.com, pgsql-bugs@lists.postgresql.org
Date: Mon, 29 Jun 2026 14:55:10 +0000
Message-ID: <19539-938dea64f871c379@postgresql.org>
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The following bug has been logged on the website:

Bug reference:      19539
Logged by:          Maria Adyakova
Email address:      adyakovam@gmail.com
PostgreSQL version: 17.6
Operating system:   Windows 11
Description:       =20

Environment

PostgreSQL: 17.6
psql: 17.6
Windows 11
Official EnterpriseDB installer
UTF-8 console (code page 65001)
server_encoding =3D UTF8
client_encoding =3D UTF8

Description

When running \d <table> in Russian localization, the output sometimes
contains random garbage Unicode characters immediately after the localized
header "=D0=9F=D0=BE =D1=83=D0=BC=D0=BE=D0=BB=D1=87=D0=B0=D0=BD=D0=B8=D1=8E=
".

Example:

=D0=A2=D0=B0=D0=B1=D0=BB=D0=B8=D1=86=D0=B0 "public.articles"
 =D0=A1=D1=82=D0=BE=D0=BB=D0=B1=D0=B5=D1=86 | =D0=A2=D0=B8=D0=BF | =D0=9F=
=D1=80=D0=B0=D0=B2=D0=B8=D0=BB=D0=BE =D1=81=D0=BE=D1=80=D1=82=D0=B8=D1=80=
=D0=BE=D0=B2=D0=BA=D0=B8 | =D0=94=D0=BE=D0=BF=D1=83=D1=81=D1=82=D0=B8=D0=BC=
=D0=BE=D1=81=D1=82=D1=8C NULL | =D0=9F=D0=BE =D1=83=D0=BC=D0=BE=D0=BB=D1=87=
=D0=B0=D0=BD=D0=B8=D1=8E
=E2=AB=90=E9=84=A2=CA=A7

The garbage characters change every execution.

Switching the locale to English:
set LANG=3DC

completely eliminates the problem.

The issue reproduces even when starting psql with:
psql -X
so it does not appear to be related to user configuration.

Expected behavior:
No extra characters after the localized header.

Actual behavior:
Random Unicode garbage appears after "=D0=9F=D0=BE =D1=83=D0=BC=D0=BE=D0=BB=
=D1=87=D0=B0=D0=BD=D0=B8=D1=8E" on every invocation.