feature #13401 [TwigBundle] use the new Twig autoescaping strategy (fabpot)

This PR was merged into the 2.7 branch.

Discussion
----------

[TwigBundle] use the new Twig autoescaping strategy

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | n/a
| License       | MIT
| Doc PR        | n/a

Commits
-------

55c4b41 [TwigBundle] use the new Twig autoescaping strategy

composer.json

@@ -18,7 +18,7 @@
     "require": {
         "php": ">=5.3.9",
         "doctrine/common": "~2.3",
-        "twig/twig": "~1.12,>=1.12.3",
+        "twig/twig": "~1.17",
         "psr/log": "~1.0"
     },
     "replace": {

src/Symfony/Bridge/Twig/composer.json

@@ -18,7 +18,7 @@
     "require": {
         "php": ">=5.3.9",
         "symfony/security-csrf": "~2.6|~3.0.0",
-        "twig/twig": "~1.13,>=1.13.1"
+        "twig/twig": "~1.17"
     },
     "require-dev": {
         "symfony/finder": "~2.3|~3.0.0",

src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php

@@ -166,9 +166,7 @@ class Configuration implements ConfigurationInterface
         $rootNode
             ->fixXmlConfig('path')
             ->children()
-                ->variableNode('autoescape')
+                ->variableNode('autoescape')->defaultValue('filename')->end()
-                    ->defaultValue(array('Symfony\Bundle\TwigBundle\TwigDefaultEscapingStrategy', 'guess'))
-                ->end()
                 ->scalarNode('autoescape_service')->defaultNull()->end()
                 ->scalarNode('autoescape_service_method')->defaultNull()->end()
                 ->scalarNode('base_template_class')->example('Twig_Template')->end()

src/Symfony/Bundle/TwigBundle/Tests/DependencyInjection/TwigExtensionTest.php

@@ -149,7 +149,7 @@ class TwigExtensionTest extends TestCase
         $this->compileContainer($container);
 
         $options = $container->getParameter('twig.options');
-        $this->assertEquals(array('Symfony\Bundle\TwigBundle\TwigDefaultEscapingStrategy', 'guess'), $options['autoescape']);
+        $this->assertEquals('filename', $options['autoescape']);
     }
 
     public function testGlobalsWithDifferentTypesAndValues()

src/Symfony/Bundle/TwigBundle/TwigDefaultEscapingStrategy.php

@@ -11,8 +11,12 @@
 
 namespace Symfony\Bundle\TwigBundle;
 
+trigger_error('The '.__NAMESPACE__.'\TwigDefaultEscapingStrategy class is deprecated in version 2.7 and will be removed in version 3.0. Use the "filename" auto-escaping strategy instead.', E_USER_DEPRECATED);
+
 /**
  * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @deprecated since version 2.7, will be removed in 3.0. Use the "filename" auto-escaping strategy instead.
  */
 class TwigDefaultEscapingStrategy
 {

src/Symfony/Bundle/TwigBundle/TwigEngine.php

@@ -54,13 +54,13 @@ class TwigEngine extends BaseEngine implements EngineInterface
 
     /**
      * @deprecated since version 2.7, to be removed in 3.0.
-     *             Use TwigDefaultEscapingStrategy instead.
+     *             Use the 'filename' strategy instead.
      */
     public function guessDefaultEscapingStrategy($filename)
     {
-        trigger_error('The '.__METHOD__.' method is deprecated since version 2.7 and will be removed in 3.0. Use the Symfony\Bundle\TwigBundle\TwigDefaultEscapingStrategy::guess method instead.', E_USER_DEPRECATED);
+        trigger_error('The '.__METHOD__.' method is deprecated since version 2.7 and will be removed in 3.0. Use the Twig_FileExtensionEscapingStrategy::guess method instead.', E_USER_DEPRECATED);
 
-        return TwigDefaultEscapingStrategy::guess($filename);
+        return \Twig_FileExtensionEscapingStrategy::guess($filename);
     }
 
     /**