Merge branch '2.8' into 3.4

* 2.8:
  [appveyor] fix
  Revert "minor #28321 [Routing] Fixed the interface description of the url generator interface (Toflar)"
  remove cache warmers when Twig cache is disabled
  [HttpKernel][FrameworkBundle] Fix escaping of serialized payloads passed to test clients
  chore: rename Appveyor filename
  Fixed the interface description of the url generator interface
  Format file size in validation message according to binaryFormat option

.appveyor.yml

@@ -53,7 +53,7 @@ install:
     - php composer.phar self-update
     - copy /Y .composer\* %APPDATA%\Composer\
     - php composer.phar global require --no-progress --no-scripts --no-plugins symfony/flex dev-master
-    - php .github/build-packages.php %APPVEYOR_REPO_COMMIT%^^ src\Symfony\Bridge\PhpUnit
+    - php .github/build-packages.php "HEAD^" src\Symfony\Bridge\PhpUnit
     - IF %APPVEYOR_REPO_BRANCH%==master (SET COMPOSER_ROOT_VERSION=dev-master) ELSE (SET COMPOSER_ROOT_VERSION=%APPVEYOR_REPO_BRANCH%.x-dev)
     - php composer.phar config platform.php 5.5.9
     - php composer.phar update --no-progress --no-suggest --ansi

.github/build-packages.php

@@ -6,15 +6,20 @@ if (3 > $_SERVER['argc']) {
 }
 chdir(dirname(__DIR__));
 
+$json = ltrim(file_get_contents('composer.json'));
+if ($json !== $package = preg_replace('/\n    "repositories": \[\n.*?\n    \],/s', '', $json)) {
+    file_put_contents('composer.json', $package);
+}
+
 $dirs = $_SERVER['argv'];
 array_shift($dirs);
-$mergeBase = trim(shell_exec(sprintf('git merge-base %s HEAD', array_shift($dirs))));
+$mergeBase = trim(shell_exec(sprintf('git merge-base "%s" HEAD', array_shift($dirs))));
 
 $packages = array();
 $flags = \PHP_VERSION_ID >= 50400 ? JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE : 0;
 
 foreach ($dirs as $k => $dir) {
-    if (!system("git diff --name-only \"$mergeBase\" -- $dir", $exitStatus)) {
+    if (!system("git diff --name-only $mergeBase -- $dir", $exitStatus)) {
         if ($exitStatus) {
             exit($exitStatus);
         }
@@ -74,7 +79,6 @@ if ($dirs) {
         'type' => 'composer',
         'url' => 'file://'.str_replace(DIRECTORY_SEPARATOR, '/', dirname(__DIR__)).'/',
     ));
-    $json = preg_replace('/\n    "repositories": \[\n.*?\n    \],/s', '', $json);
     $json = rtrim(json_encode(array('repositories' => $package->repositories), $flags), "\n}").','.substr($json, 1);
     file_put_contents('composer.json', $json);
 }

src/Symfony/Bundle/FrameworkBundle/Client.php

@@ -161,8 +161,8 @@ class Client extends BaseClient
      */
     protected function getScript($request)
     {
-        $kernel = str_replace("'", "\\'", serialize($this->kernel));
-        $request = str_replace("'", "\\'", serialize($request));
+        $kernel = var_export(serialize($this->kernel), true);
+        $request = var_export(serialize($request), true);
         $errorReporting = error_reporting();
 
         $requires = '';
@@ -171,7 +171,7 @@ class Client extends BaseClient
                 $r = new \ReflectionClass($class);
                 $file = \dirname(\dirname($r->getFileName())).'/autoload.php';
                 if (file_exists($file)) {
-                    $requires .= "require_once '".str_replace("'", "\\'", $file)."';\n";
+                    $requires .= 'require_once '.var_export($file, true).";\n";
                 }
             }
         }
@@ -180,7 +180,7 @@ class Client extends BaseClient
             throw new \RuntimeException('Composer autoloader not found.');
         }
 
-        $requires .= "require_once '".str_replace("'", "\\'", (new \ReflectionObject($this->kernel))->getFileName())."';\n";
+        $requires .= 'require_once '.var_export((new \ReflectionObject($this->kernel))->getFileName(), true).";\n";
 
         $profilerCode = '';
         if ($this->profiler) {
@@ -194,11 +194,11 @@ error_reporting($errorReporting);
 
 $requires
 
-\$kernel = unserialize('$kernel');
+\$kernel = unserialize($kernel);
 \$kernel->boot();
 $profilerCode
 
-\$request = unserialize('$request');
+\$request = unserialize($request);
 EOF;
 
         return $code.$this->getHandleScript();

src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php

@@ -47,10 +47,15 @@ class ExtensionPass implements CompilerPassInterface
             $coreThemePath = \dirname(\dirname($reflClass->getFileName())).'/Resources/views/Form';
             $container->getDefinition('twig.loader.native_filesystem')->addMethodCall('addPath', array($coreThemePath));
 
-            $paths = $container->getDefinition('twig.cache_warmer')->getArgument(2);
+            $paths = $container->getDefinition('twig.template_iterator')->getArgument(2);
             $paths[$coreThemePath] = null;
-            $container->getDefinition('twig.cache_warmer')->replaceArgument(2, $paths);
             $container->getDefinition('twig.template_iterator')->replaceArgument(2, $paths);
+
+            if ($container->hasDefinition('twig.cache_warmer')) {
+                $paths = $container->getDefinition('twig.cache_warmer')->getArgument(2);
+                $paths[$coreThemePath] = null;
+                $container->getDefinition('twig.cache_warmer')->replaceArgument(2, $paths);
+            }
         }
 
         if ($container->has('router')) {

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

@@ -166,6 +166,11 @@ class TwigExtension extends Extension
         $container->registerForAutoconfiguration(LoaderInterface::class)->addTag('twig.loader');
         $container->registerForAutoconfiguration(RuntimeExtensionInterface::class)->addTag('twig.runtime');
 
+        if (false === $config['cache']) {
+            $container->removeDefinition('twig.cache_warmer');
+            $container->removeDefinition('twig.template_cache_warmer');
+        }
+
         if (\PHP_VERSION_ID < 70000) {
             $this->addClassesToCompile(array(
                 'Twig_Environment',

src/Symfony/Component/HttpKernel/Client.php

@@ -81,8 +81,9 @@ class Client extends BaseClient
      */
     protected function getScript($request)
     {
-        $kernel = str_replace("'", "\\'", serialize($this->kernel));
-        $request = str_replace("'", "\\'", serialize($request));
+        $kernel = var_export(serialize($this->kernel), true);
+        $request = var_export(serialize($request), true);
+
         $errorReporting = error_reporting();
 
         $requires = '';
@@ -91,7 +92,7 @@ class Client extends BaseClient
                 $r = new \ReflectionClass($class);
                 $file = \dirname(\dirname($r->getFileName())).'/autoload.php';
                 if (file_exists($file)) {
-                    $requires .= "require_once '".str_replace("'", "\\'", $file)."';\n";
+                    $requires .= 'require_once '.var_export($file, true).";\n";
                 }
             }
         }
@@ -107,8 +108,8 @@ error_reporting($errorReporting);
 
 $requires
 
-\$kernel = unserialize('$kernel');
-\$request = unserialize('$request');
+\$kernel = unserialize($kernel);
+\$request = unserialize($request);
 EOF;
 
         return $code.$this->getHandleScript();

src/Symfony/Component/Validator/Constraints/FileValidator.php

@@ -57,7 +57,7 @@ class FileValidator extends ConstraintValidator
                         $binaryFormat = $constraint->binaryFormat;
                     } else {
                         $limitInBytes = $iniLimitSize;
-                        $binaryFormat = true;
+                        $binaryFormat = null === $constraint->binaryFormat ? true : $constraint->binaryFormat;
                     }
 
                     list($sizeAsString, $limitAsString, $suffix) = $this->factorizeSizes(0, $limitInBytes, $binaryFormat);

src/Symfony/Component/Validator/Tests/Constraints/FileValidatorTest.php

@@ -450,11 +450,17 @@ abstract class FileValidatorTest extends ConstraintValidatorTestCase
                 '{{ suffix }}' => 'bytes',
             ), '1');
 
+            // access FileValidator::factorizeSizes() private method to format max file size
+            $reflection = new \ReflectionClass(\get_class(new FileValidator()));
+            $method = $reflection->getMethod('factorizeSizes');
+            $method->setAccessible(true);
+            list($sizeAsString, $limit, $suffix) = $method->invokeArgs(new FileValidator(), array(0, UploadedFile::getMaxFilesize(), false));
+
             // it correctly parses the maxSize option and not only uses simple string comparison
             // 1000M should be bigger than the ini value
             $tests[] = array(UPLOAD_ERR_INI_SIZE, 'uploadIniSizeErrorMessage', array(
-                '{{ limit }}' => UploadedFile::getMaxFilesize() / 1048576,
-                '{{ suffix }}' => 'MiB',
+                '{{ limit }}' => $limit,
+                '{{ suffix }}' => $suffix,
             ), '1000M');
 
             // it correctly parses the maxSize option and not only uses simple string comparison