symfony
diff --git a/‎src/Symfony/Component/Translation/CHANGELOG.md‎
Lines changed: 5 additions & 0 deletions b/‎src/Symfony/Component/Translation/CHANGELOG.md‎
Lines changed: 5 additions & 0 deletions
diff --git a/‎src/Symfony/Component/Translation/Tests/TranslatorTest.php‎
Lines changed: 5 additions & 1 deletion b/‎src/Symfony/Component/Translation/Tests/TranslatorTest.php‎
Lines changed: 5 additions & 1 deletion
diff --git a/‎src/Symfony/Component/Translation/Translator.php‎
Lines changed: 5 additions & 0 deletions b/‎src/Symfony/Component/Translation/Translator.php‎
Lines changed: 5 additions & 0 deletions
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+6.1
+---
+
+ * Parameters implementing `TranslatableInterface` are processed
+
 5.4
 ---
 
 
@@ -17,6 +17,7 @@
 use Symfony\Component\Translation\Exception\RuntimeException;
 use Symfony\Component\Translation\Loader\ArrayLoader;
 use Symfony\Component\Translation\MessageCatalogue;
 use Symfony\Component\Translation\Translator;
 
 class TranslatorTest extends TestCase
@@ -467,11 +468,14 @@ public function getTransFileTests()
         ];
     }
 
-    public function getTransTests()
+    public function getTransTests(): iterable
     {
+        $param = new TranslatableMessage('Symfony is %what%!', ['%what%' => 'awesome'], '');
+
         return [
             ['Symfony est super !', 'Symfony is great!', 'Symfony est super !', [], 'fr', ''],
             ['Symfony est awesome !', 'Symfony is %what%!', 'Symfony est %what% !', ['%what%' => 'awesome'], 'fr', ''],
+            ['Symfony est Symfony est awesome ! !', 'Symfony is %what%!', 'Symfony est %what% !', ['%what%' => $param], 'fr', ''],
             ['Symfony est super !', new StringClass('Symfony is great!'), 'Symfony est super !', [], 'fr', ''],
             ['', null, '', [], 'fr', ''],
         ];
 
@@ -22,6 +22,7 @@
 use Symfony\Component\Translation\Formatter\MessageFormatterInterface;
 use Symfony\Component\Translation\Loader\LoaderInterface;
 use Symfony\Contracts\Translation\LocaleAwareInterface;
+use Symfony\Contracts\Translation\TranslatableInterface;
 use Symfony\Contracts\Translation\TranslatorInterface;
 
 // Help opcache.preload discover always-needed symbols
@@ -194,6 +195,10 @@ public function trans(?string $id, array $parameters = [], string $domain = null
             }
         }
 
+        $parameters = array_map(function ($parameter) use ($locale) {
+            return $parameter instanceof TranslatableInterface ? $parameter->trans($this, $locale) : $parameter;
+        }, $parameters);
+
         $len = \strlen(MessageCatalogue::INTL_DOMAIN_SUFFIX);
         if ($this->hasIntlFormatter
             && ($catalogue->defines($id, $domain.MessageCatalogue::INTL_DOMAIN_SUFFIX)