From ce706dd5bf53db38e8b7615f62908608ffc58e13 Mon Sep 17 00:00:00 2001
From: nawaaaaaAaar <198336470+nawaaaaaAaar@users.noreply.github.com>
Date: Thu, 22 Oct 2026 12:10:31 +0000
Subject: [PATCH] Respect preformatted strings in compound-unit formatting

---
 babel/units.py      |  7 ++++++-
 tests/test_units.py | 14 +++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/babel/units.py b/babel/units.py
index 0f32014aa..a6198b8e3 100644
--- a/babel/units.py
+++ b/babel/units.py
@@ -311,7 +311,12 @@ def format_compound_unit(
 
     # Look for a specific compound unit first...
 
-    if numerator_unit and denominator_unit and denominator_value == 1:
+    if (
+        not isinstance(numerator_value, str)
+        and numerator_unit
+        and denominator_unit
+        and denominator_value == 1
+    ):
         compound_unit = _find_compound_unit(numerator_unit, denominator_unit, locale=locale)
         if compound_unit:
             return format_unit(
diff --git a/tests/test_units.py b/tests/test_units.py
index dcb938775..8e1ccd784 100644
--- a/tests/test_units.py
+++ b/tests/test_units.py
@@ -1,6 +1,18 @@
 import pytest
 
-from babel.units import format_unit, get_unit_name
+from babel.units import format_compound_unit, format_unit, get_unit_name
+
+
+@pytest.mark.parametrize('locale', ['en', 'fi', 'fr'])
+@pytest.mark.parametrize('length', ['long', 'short', 'narrow'])
+@pytest.mark.parametrize('value', ['custom label', '1 kg'])
+def test_compound_unit_preformatted_numerator_ignores_unit(locale, length, value):
+    expected = format_compound_unit(
+        value, denominator_unit='hour', length=length, locale=locale,
+    )
+    assert format_compound_unit(
+        value, 'kilometer', denominator_unit='hour', length=length, locale=locale,
+    ) == expected
 
 
 # New units in CLDR 46