Merge branch '4.4' into 5.2

* 4.4:
  [Config][DependencyInjection] Uniformize trailing slash handling
  [PropertyInfo] Make ReflectionExtractor correctly extract nullability
  [PropertyInfo] fix attribute namespace with recursive traits
  Check redis extension version
  [Security] Update Russian translations
  [VarExporter] Add support of PHP enumerations
  [Security] Added missing Japanese translations
  [Security] Added missing Polish translations
  [Security] Add missing Italian translations #41051
  [Security] Missing translations pt_BR
  getProtocolVersion may return null
  [Translation] Set default locale for IdentityTranslatorTest

Author: nicolas-grekas

Loader/FileLoader.php

@@ -164,8 +164,8 @@ private function findClasses(string $namespace, string $pattern, array $excludeP
                     $excludePrefix = $resource->getPrefix();
                 }
 
-                // normalize Windows slashes
-                $excludePaths[str_replace('\\', '/', $path)] = true;
+                // normalize Windows slashes and remove trailing slashes
+                $excludePaths[rtrim(str_replace('\\', '/', $path), '/')] = true;
             }
         }
 

Tests/Loader/FileLoaderTest.php

@@ -238,6 +238,35 @@ public function testRegisterClassesWithIncompatibleExclude()
             'yaml/*'
         );
     }
+
+    /**
+     * @dataProvider excludeTrailingSlashConsistencyProvider
+     */
+    public function testExcludeTrailingSlashConsistency(string $exclude)
+    {
+        $container = new ContainerBuilder();
+        $loader = new TestFileLoader($container, new FileLocator(self::$fixturesPath.'/Fixtures'));
+        $loader->registerClasses(
+            new Definition(),
+            'Symfony\Component\DependencyInjection\Tests\Fixtures\Prototype\\',
+            'Prototype/*',
+            $exclude
+        );
+
+        $this->assertTrue($container->has(Foo::class));
+        $this->assertFalse($container->has(DeeperBaz::class));
+    }
+
+    public function excludeTrailingSlashConsistencyProvider(): iterable
+    {
+        yield ['Prototype/OtherDir/AnotherSub/'];
+        yield ['Prototype/OtherDir/AnotherSub'];
+        yield ['Prototype/OtherDir/AnotherSub/*'];
+        yield ['Prototype/*/AnotherSub'];
+        yield ['Prototype/*/AnotherSub/'];
+        yield ['Prototype/*/AnotherSub/*'];
+        yield ['Prototype/OtherDir/AnotherSub/DeeperBaz.php'];
+    }
 }
 
 class TestFileLoader extends FileLoader