From f1de81d9f00ce55c8a1c4795391692c066f6472d Mon Sep 17 00:00:00 2001
From: Benjy Wiener <benjywiener@gmail.com>
Date: Mon, 15 Jun 2026 09:59:27 +0300
Subject: [PATCH 1/2] Fix command quoting in CalledProcessError

CalledProcessError previously formatted cmd as `"... '%s' ..."`. This lead to
unbalanced quoting when cmd contains single-quotes or, more commonly, when cmd
is a list. This change updates the relevant format strings to use %r instead.
---
 Lib/subprocess.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index 38b655f2f7b9d2b..6fe2ec98fb40888 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -145,13 +145,13 @@ def __init__(self, returncode, cmd, output=None, stderr=None):
     def __str__(self):
         if self.returncode and self.returncode < 0:
             try:
-                return "Command '%s' died with %r." % (
+                return "Command %r died with %r." % (
                         self.cmd, signal.Signals(-self.returncode))
             except ValueError:
-                return "Command '%s' died with unknown signal %d." % (
+                return "Command %r died with unknown signal %d." % (
                         self.cmd, -self.returncode)
         else:
-            return "Command '%s' returned non-zero exit status %d." % (
+            return "Command %r returned non-zero exit status %d." % (
                     self.cmd, self.returncode)
 
     @property

From 7c2bb0493200146012e0acd8b9f681f6bad47184 Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Mon, 15 Jun 2026 07:42:14 +0000
Subject: [PATCH 2/2] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../next/Library/2026-06-15-07-42-12.gh-issue-151485.NiYQPZ.rst  | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2026-06-15-07-42-12.gh-issue-151485.NiYQPZ.rst

diff --git a/Misc/NEWS.d/next/Library/2026-06-15-07-42-12.gh-issue-151485.NiYQPZ.rst b/Misc/NEWS.d/next/Library/2026-06-15-07-42-12.gh-issue-151485.NiYQPZ.rst
new file mode 100644
index 000000000000000..134499107ab2b78
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-06-15-07-42-12.gh-issue-151485.NiYQPZ.rst
@@ -0,0 +1 @@
+Fix command quoting in :exc:`subprocess.CalledProcessError`. Contributed by Benjy Wiener.