From d1db940ade073b02bb1ca3a32e315d1cd635edb7 Mon Sep 17 00:00:00 2001
From: Richard Holloway <richard@richardjh.org>
Date: Wed, 11 Jan 2017 00:02:29 +0700
Subject: [PATCH] Only use extensions if a comma delimited list

---
 src/PHPCensor/Plugin/PhpParallelLint.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/PHPCensor/Plugin/PhpParallelLint.php b/src/PHPCensor/Plugin/PhpParallelLint.php
index f3a6daeb..5fa044bb 100644
--- a/src/PHPCensor/Plugin/PhpParallelLint.php
+++ b/src/PHPCensor/Plugin/PhpParallelLint.php
@@ -59,7 +59,11 @@ class PhpParallelLint extends Plugin
         }
 
         if (isset($options['extensions'])) {
-            $this->extensions = $options['extensions'];
+            // Only use if this is a comma delimited list
+            $pattern = '/^[a-z]*,\\ *[a-z]*$/';
+            if (preg_match($pattern, $options['extensions'])) {
+                $this->extensions = $options['extensions'];
+            }
         }
     }