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diff --git a/vendor/twig/twig/lib/Twig/Extension/Debug.php b/vendor/twig/twig/lib/Twig/Extension/Debug.php
new file mode 100644
index 000000000..d22a38550
--- /dev/null
+++ b/vendor/twig/twig/lib/Twig/Extension/Debug.php
@@ -0,0 +1,65 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * @final
+ */
+class Twig_Extension_Debug extends Twig_Extension
+{
+    public function getFunctions()
+    {
+        // dump is safe if var_dump is overridden by xdebug
+        $isDumpOutputHtmlSafe = extension_loaded('xdebug')
+            // false means that it was not set (and the default is on) or it explicitly enabled
+            && (false === ini_get('xdebug.overload_var_dump') || ini_get('xdebug.overload_var_dump'))
+            // false means that it was not set (and the default is on) or it explicitly enabled
+            // xdebug.overload_var_dump produces HTML only when html_errors is also enabled
+            && (false === ini_get('html_errors') || ini_get('html_errors'))
+            || 'cli' === php_sapi_name()
+        ;
+
+        return array(
+            new Twig_SimpleFunction('dump', 'twig_var_dump', array('is_safe' => $isDumpOutputHtmlSafe ? array('html') : array(), 'needs_context' => true, 'needs_environment' => true)),
+        );
+    }
+
+    public function getName()
+    {
+        return 'debug';
+    }
+}
+
+function twig_var_dump(Twig_Environment $env, $context)
+{
+    if (!$env->isDebug()) {
+        return;
+    }
+
+    ob_start();
+
+    $count = func_num_args();
+    if (2 === $count) {
+        $vars = array();
+        foreach ($context as $key => $value) {
+            if (!$value instanceof Twig_Template) {
+                $vars[$key] = $value;
+            }
+        }
+
+        var_dump($vars);
+    } else {
+        for ($i = 2; $i < $count; ++$i) {
+            var_dump(func_get_arg($i));
+        }
+    }
+
+    return ob_get_clean();
+}