=== modified file 'sites/all/modules/comment_revisions/comment_revisions.module'
--- sites/all/modules/comment_revisions/comment_revisions.module	2009-08-25 14:48:31 +0000
+++ sites/all/modules/comment_revisions/comment_revisions.module	2010-01-24 02:42:29 +0000
@@ -224,7 +224,7 @@
         /* No revision before, that means, the original has to be saved */
         if (!_comment_revision_cmt_has_revisions($a1['cid'])) {
           $comment = db_fetch_array(db_query('SELECT * FROM {comments} WHERE cid = %d', $a1['cid']));
-          db_query('INSERT INTO {comment_revisions} (cid, comment, subject, logmessage, createdon, createdby, is_hidden) VALUES (%d,"%s","%s","%s", %d, %d, %d)' ,
+          db_query("INSERT INTO {comment_revisions} (cid, comment, subject, logmessage, createdon, createdby, is_hidden) VALUES (%d,'%s','%s','%s', %d, %d, %d)" ,
             $comment['cid'], $comment['comment'], $comment['subject'], t('Original comment'), $comment['timestamp'], $comment['uid'], FALSE);
         }
       }
@@ -241,7 +241,7 @@
       $query_info['is_hidden']   = 0;
 
       if ($a1['create_revision']) {
-        db_query('INSERT INTO {comment_revisions} (cid, comment, subject, logmessage, createdon, createdby, is_hidden) VALUES (%d,"%s","%s","%s", %d, %d, %d)' ,
+        db_query("INSERT INTO {comment_revisions} (cid, comment, subject, logmessage, createdon, createdby, is_hidden) VALUES (%d,'%s','%s','%s', %d, %d, %d)" ,
           $query_info['cid'], $query_info['comment'], $query_info['subject'], $query_info['log_message'],
           $query_info['createdon'], $query_info['createdby'], $query_info['is_hidden']);
 
@@ -274,7 +274,7 @@
         // This way, {comment} and {comment_revisions} always agree on the latest version of the comment.
         $vid = _comment_revision_get_actual_revision($query_info['cid']);
         if ($vid) {
-          $result = db_query('UPDATE {comment_revisions} SET comment = "%s", subject = "%s", logmessage = "%s", createdon = %d, createdby = %d, is_hidden = %d WHERE vid = %d',
+          $result = db_query("UPDATE {comment_revisions} SET comment = '%s', subject = '%s', logmessage = '%s', createdon = %d, createdby = %d, is_hidden = %d WHERE vid = %d",
             $query_info['comment'], $query_info['subject'], $query_info['log_message'], $query_info['createdon'],
             $query_info['createdby'], $query_info['is_hidden'], $vid);
         }
@@ -389,7 +389,7 @@
     comment_revisions_unhide($revision->vid);
   }
   db_query('UPDATE {comment_revisions_actual} SET vid = %d WHERE cid = %d', $revision->vid, $revision->cid);
-  db_query('UPDATE {comments} SET subject = "%s", comment = "%s" WHERE cid = %d', $revision->subject, $revision->comment, $revision->cid);
+  db_query("UPDATE {comments} SET subject = '%s', comment = '%s' WHERE cid = %d", $revision->subject, $revision->comment, $revision->cid);
   drupal_set_message(t('Comment Id: %cid has been reverted back to the revision from %revision-date',
     array('%revision-date' => format_date($revision->createdon), '%cid' => $revision->cid)));
   watchdog('comment', 'Reverted %cid to revision from %date.', array('%cid' => $revision->cid, '%date' => format_date($revision->createdon)),