From ef3248dc0548c2d6cd0f1fb63c893043aa6e4c8e Mon Sep 17 00:00:00 2001
From: Greg Haddow <g.haddow@kent.ac.uk>
Date: Sat, 12 Nov 2016 11:09:20 +0000
Subject: [PATCH] Update FileTagSet.php

---
 src/Cache/FileTagSet.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Cache/FileTagSet.php b/src/Cache/FileTagSet.php
index 61a1558..ac566b2 100644
--- a/src/Cache/FileTagSet.php
+++ b/src/Cache/FileTagSet.php
@@ -16,7 +16,7 @@ class FileTagSet extends TagSet{
 	 */
 	public function tagKey($name)
 	{
-		return 'cache_tags' . $this->store->separator .$name;
+		return 'cache_tags' . $this->store->separator . preg_replace('/[^\w\s\d\-_~,;\[\]\(\).]/', '~', $name);
 	}