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diff --git a/vendor/psy/psysh/src/TabCompletion/Matcher/FunctionDefaultParametersMatcher.php b/vendor/psy/psysh/src/TabCompletion/Matcher/FunctionDefaultParametersMatcher.php
new file mode 100644
index 000000000..14c568e1f
--- /dev/null
+++ b/vendor/psy/psysh/src/TabCompletion/Matcher/FunctionDefaultParametersMatcher.php
@@ -0,0 +1,53 @@
+<?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;
+
+class FunctionDefaultParametersMatcher extends AbstractDefaultParametersMatcher
+{
+    public function getMatches(array $tokens, array $info = [])
+    {
+        array_pop($tokens); // open bracket
+
+        $functionName = array_pop($tokens);
+
+        try {
+            $reflection = new \ReflectionFunction($functionName[1]);
+        } catch (\ReflectionException $e) {
+            return [];
+        }
+
+        $parameters = $reflection->getParameters();
+
+        return $this->getDefaultParameterCompletion($parameters);
+    }
+
+    public function hasMatched(array $tokens)
+    {
+        $openBracket = array_pop($tokens);
+
+        if ($openBracket !== '(') {
+            return false;
+        }
+
+        $functionName = array_pop($tokens);
+
+        if (!self::tokenIs($functionName, self::T_STRING)) {
+            return false;
+        }
+
+        if (!function_exists($functionName[1])) {
+            return false;
+        }
+
+        return true;
+    }
+}