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diff --git a/vendor/psy/psysh/src/Psy/Command/ListCommand/GlobalVariableEnumerator.php b/vendor/psy/psysh/src/Psy/Command/ListCommand/GlobalVariableEnumerator.php
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index 000000000..d957e9f52
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+++ b/vendor/psy/psysh/src/Psy/Command/ListCommand/GlobalVariableEnumerator.php
@@ -0,0 +1,92 @@
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2017 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Command\ListCommand;
+
+use Symfony\Component\Console\Input\InputInterface;
+
+/**
+ * Global Variable Enumerator class.
+ */
+class GlobalVariableEnumerator extends Enumerator
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function listItems(InputInterface $input, \Reflector $reflector = null, $target = null)
+    {
+        // only list globals when no Reflector is present.
+        if ($reflector !== null || $target !== null) {
+            return;
+        }
+
+        // only list globals if we are specifically asked
+        if (!$input->getOption('globals')) {
+            return;
+        }
+
+        $globals = $this->prepareGlobals($this->getGlobals());
+
+        if (empty($globals)) {
+            return;
+        }
+
+        return array(
+            'Global Variables' => $globals,
+        );
+    }
+
+    /**
+     * Get defined global variables.
+     *
+     * @return array
+     */
+    protected function getGlobals()
+    {
+        global $GLOBALS;
+
+        $names = array_keys($GLOBALS);
+        natcasesort($names);
+
+        $ret = array();
+        foreach ($names as $name) {
+            $ret[$name] = $GLOBALS[$name];
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Prepare formatted global variable array.
+     *
+     * @param array $globals
+     *
+     * @return array
+     */
+    protected function prepareGlobals($globals)
+    {
+        // My kingdom for a generator.
+        $ret = array();
+
+        foreach ($globals as $name => $value) {
+            if ($this->showItem($name)) {
+                $fname = '$' . $name;
+                $ret[$fname] = array(
+                    'name'  => $fname,
+                    'style' => self::IS_GLOBAL,
+                    'value' => $this->presentRef($value),
+                );
+            }
+        }
+
+        return $ret;
+    }
+}