bug symfony#20466 [Translation] fixed nested fallback catalogue using multiple locales. (aitboudad)

This PR was merged into the 2.7 branch.

Discussion
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[Translation] fixed nested fallback catalogue  using multiple locales.

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | symfony#17786
| License       | MIT
| Doc PR        | ~

Commits
-------

bac217d [Translation] fixed nested fallback catalogue  using multiple locales.

Author: fabpot

src/Symfony/Component/Translation/Tests/TranslatorTest.php

@@ -273,6 +273,16 @@ public function testWhenAResourceHasNoRegisteredLoader()
         $translator->trans('foo');
     }
 
+    public function testNestedFallbackCatalogueWhenUsingMultipleLocales()
+    {
+        $translator = new Translator('fr');
+        $translator->setFallbackLocales(array('ru', 'en'));
+
+        $translator->getCatalogue('fr');
+
+        $this->assertNotNull($translator->getCatalogue('ru')->getFallbackCatalogue());
+    }
+
     public function testFallbackCatalogueResources()
     {
         $translator = new Translator('en_GB', new MessageSelector());

src/Symfony/Component/Translation/Translator.php

@@ -159,7 +159,7 @@ public function getLocale()
      *
      * @throws \InvalidArgumentException If a locale contains invalid characters
      *
-     * @deprecated since version 2.3, to be removed in 3.0. Use setFallbackLocales() instead.
+     * @deprecated since version 2.3, to be removed in 3.0. Use setFallbackLocales() instead
      */
     public function setFallbackLocale($locales)
     {
@@ -420,7 +420,7 @@ private function loadFallbackCatalogues($locale)
 
         foreach ($this->computeFallbackLocales($locale) as $fallback) {
             if (!isset($this->catalogues[$fallback])) {
-                $this->doLoadCatalogue($fallback);
+                $this->loadCatalogue($fallback);
             }
 
             $fallbackCatalogue = new MessageCatalogue($fallback, $this->catalogues[$fallback]->all());