Merge branch '2.8' into 3.0

* 2.8:
  [Process] Fix transient tests for incremental outputs
  [Console] Add missing `@require` annotation in test
  Fix merge
  [appveyor] Fix failure reporting
  [#17634] move DebugBundle license file
  backport GlobTest from 2.7 branch
  Move licenses according to new best practices
  [FrameworkBundle] Remove unused code in test
  [2.3] Fixed an undefined variable in Glob::toRegex
  simplified a test
  fix container cache key generation
  [Form] fix option name in upgrade file
  [Form] fix option name in changelog
  [Translation] Add resources from fallback locale
  [DependencyInjection] enforce tags to have a name
  [YAML] Refine the return value of Yaml::parse()

Conflicts:
	UPGRADE-2.8.md

Author: nicolas-grekas

Tests/TranslatorTest.php

@@ -273,6 +273,26 @@ public function testWhenAResourceHasNoRegisteredLoader()
         $translator->trans('foo');
     }
 
+    public function testFallbackCatalogueResources()
+    {
+        $translator = new Translator('en_GB', new MessageSelector());
+        $translator->addLoader('yml', new \Symfony\Component\Translation\Loader\YamlFileLoader());
+        $translator->addResource('yml', __DIR__.'/fixtures/empty.yml', 'en_GB');
+        $translator->addResource('yml', __DIR__.'/fixtures/resources.yml', 'en');
+
+        // force catalogue loading
+        $this->assertEquals('bar', $translator->trans('foo', array()));
+
+        $resources = $translator->getCatalogue('en')->getResources();
+        $this->assertCount(1, $resources);
+        $this->assertContains( __DIR__.DIRECTORY_SEPARATOR.'fixtures'.DIRECTORY_SEPARATOR.'resources.yml', $resources);
+
+        $resources = $translator->getCatalogue('en_GB')->getResources();
+        $this->assertCount(2, $resources);
+        $this->assertContains( __DIR__.DIRECTORY_SEPARATOR.'fixtures'.DIRECTORY_SEPARATOR.'empty.yml', $resources);
+        $this->assertContains( __DIR__.DIRECTORY_SEPARATOR.'fixtures'.DIRECTORY_SEPARATOR.'resources.yml', $resources);
+    }
+
     /**
      * @dataProvider getTransTests
      */

Translator.php

@@ -384,6 +384,9 @@ private function loadFallbackCatalogues($locale)
             }
 
             $fallbackCatalogue = new MessageCatalogue($fallback, $this->catalogues[$fallback]->all());
+            foreach ($this->catalogues[$fallback]->getResources() as $resource) {
+                $fallbackCatalogue->addResource($resource);
+            }
             $current->addFallbackCatalogue($fallbackCatalogue);
             $current = $fallbackCatalogue;
         }