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diff --git a/vendor/psy/psysh/src/TabCompletion/Matcher/KeywordsMatcher.php b/vendor/psy/psysh/src/TabCompletion/Matcher/KeywordsMatcher.php
new file mode 100644
index 000000000..b576f82bb
--- /dev/null
+++ b/vendor/psy/psysh/src/TabCompletion/Matcher/KeywordsMatcher.php
@@ -0,0 +1,85 @@
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2018 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\TabCompletion\Matcher;
+
+/**
+ * A PHP keyword tab completion Matcher.
+ *
+ * This matcher provides completion for all function-like PHP keywords.
+ *
+ * @author Marc Garcia <markcial@gmail.com>
+ */
+class KeywordsMatcher extends AbstractMatcher
+{
+    protected $keywords = [
+        'array', 'clone', 'declare', 'die', 'echo', 'empty', 'eval', 'exit', 'include',
+        'include_once', 'isset', 'list', 'print',  'require', 'require_once', 'unset',
+    ];
+
+    protected $mandatoryStartKeywords = [
+        'die', 'echo', 'print', 'unset',
+    ];
+
+    /**
+     * Get all (completable) PHP keywords.
+     *
+     * @return array
+     */
+    public function getKeywords()
+    {
+        return $this->keywords;
+    }
+
+    /**
+     * Check whether $keyword is a (completable) PHP keyword.
+     *
+     * @param string $keyword
+     *
+     * @return bool
+     */
+    public function isKeyword($keyword)
+    {
+        return in_array($keyword, $this->keywords);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getMatches(array $tokens, array $info = [])
+    {
+        $input = $this->getInput($tokens);
+
+        return array_filter($this->keywords, function ($keyword) use ($input) {
+            return AbstractMatcher::startsWith($input, $keyword);
+        });
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasMatched(array $tokens)
+    {
+        $token     = array_pop($tokens);
+        $prevToken = array_pop($tokens);
+
+        switch (true) {
+            case self::hasToken([self::T_OPEN_TAG, self::T_VARIABLE], $token):
+//            case is_string($token) && $token === '$':
+            case self::hasToken([self::T_OPEN_TAG, self::T_VARIABLE], $prevToken) &&
+                self::tokenIs($token, self::T_STRING):
+            case self::isOperator($token):
+                return true;
+        }
+
+        return false;
+    }
+}