commit 25da2b17c3337f48d103990bd84fc63b46f5dc0a
Author: Chris Burgess <chris@giantrobot.co.nz>
Date:   Sat May 5 08:05:16 2012 +1200

    Issue #1534930. PHP parse error causes fatal error.

diff --git a/revisionreference.module b/revisionreference.module
index 16cba4b..c439b06 100644
--- a/revisionreference.module
+++ b/revisionreference.module
@@ -837,7 +837,7 @@ function revisionreference_vid_is_current($vid, $nid = NULL) {
 function revisionreference_token_list($type = 'all') {
   if ($type == 'field' || $type == 'all') {
     return array(
-      'revision reference' = array(
+      'revision reference' => array(
         'nid' => t('Referenced node ID'),
         'vid' => t('Referenced node revision ID'),
         'title' => t('Referenced node title'),