From 0e16e22c5c5571feb48da55892cff41aa183ae85 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9o=20FIDRY?= <theo.fidry@gmail.com>
Date: Sun, 1 Jul 2018 19:02:36 +0200
Subject: [PATCH] Fix string literal scoping

---
 specs/string-literal/misc.php                 | 60 +++++++++++++++++++
 .../NodeVisitor/StringScalarPrefixer.php      |  2 +-
 2 files changed, 61 insertions(+), 1 deletion(-)
 create mode 100644 specs/string-literal/misc.php

diff --git a/specs/string-literal/misc.php b/specs/string-literal/misc.php
new file mode 100644
index 00000000..3cff0d4a
--- /dev/null
+++ b/specs/string-literal/misc.php
@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the humbug/php-scoper package.
+ *
+ * Copyright (c) 2017 Théo FIDRY <theo.fidry@gmail.com>,
+ *                    Pádraic Brady <padraic.brady@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+return [
+    'meta' => [
+        'title' => 'String literal assigned to a variable',
+        // Default values. If not specified will be the one used
+        'prefix' => 'Humbug',
+        'whitelist' => [],
+        'whitelist-global-constants' => true,
+    ],
+
+    'PHP heredoc as argument' =>  <<<'PHP'
+<?php
+
+declare(strict_types=1);
+
+namespace Acme;
+
+sprintf( <<<'_PHP'
+if (!function_exists('%1$s')) {
+    function %1$s() {
+        return \%2$s(func_get_args());
+    }
+}
+_PHP
+        ,
+        'foo',
+        'bar'
+);
+
+----
+<?php
+
+declare (strict_types=1);
+namespace Humbug\Acme;
+
+\sprintf(<<<'_PHP'
+if (!function_exists('%1$s')) {
+    function %1$s() {
+        return \%2$s(func_get_args());
+    }
+}
+_PHP
+, 'foo', 'bar');
+
+PHP
+    ,
+];
diff --git a/src/PhpParser/NodeVisitor/StringScalarPrefixer.php b/src/PhpParser/NodeVisitor/StringScalarPrefixer.php
index 92a3e015..dd14084c 100644
--- a/src/PhpParser/NodeVisitor/StringScalarPrefixer.php
+++ b/src/PhpParser/NodeVisitor/StringScalarPrefixer.php
@@ -93,7 +93,7 @@ public function enterNode(Node $node): Node
     private function shouldPrefixScalar(Node $node, bool &$isSpecialFunction): bool
     {
         if (false === ($node instanceof String_ && AppendParentNode::hasParent($node) && is_string($node->value))
-            || 1 !== preg_match('/^((\\\\)?[\p{L}_]+)|((\\\\)?(?:[\p{L}_]+\\\\+)+[\p{L}_]+)$/u', $node->value)
+            || 1 !== preg_match('/^((\\\\)?[\p{L}_]+)$|((\\\\)?(?:[\p{L}_]+\\\\+)+[\p{L}_]+)$/u', $node->value)
         ) {
             return false;
         }