From b85283105ecee83220e2b72b18b039370707a344 Mon Sep 17 00:00:00 2001
From: Bob Trahan <btrahan@phacility.com>
Date: Thu, 13 Nov 2014 16:54:33 -0800
Subject: [PATCH] Phriction - restore diff link

Summary: Fixes T6472. I was curious to see how many reports we'd get but we didn't get any I know of... Still, this is a nice convenient link.

Test Plan:
edited a wiki doc title + body. ran /bin/mail to see the body and liked what I saw

```TEXT BODY
btrahan changed the title from "new title is a good thing" to "new title is a good thing asdsadsadsadsada".
btrahan edited the document content.

DOCUMENT DIFF
  http://phalanx.dev/phriction/diff/36/?l=3&r=4

DOCUMENT DETAIL
  http://phalanx.dev/w/```

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T6472

Differential Revision: https://secure.phabricator.com/D10850
---
 .../editor/PhrictionTransactionEditor.php      | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/applications/phriction/editor/PhrictionTransactionEditor.php b/src/applications/phriction/editor/PhrictionTransactionEditor.php
index d8c8bc1730..c5c6498b85 100644
--- a/src/applications/phriction/editor/PhrictionTransactionEditor.php
+++ b/src/applications/phriction/editor/PhrictionTransactionEditor.php
@@ -405,6 +405,24 @@ final class PhrictionTransactionEditor
       $body->addTextSection(
         pht('DOCUMENT CONTENT'),
         $object->getContent()->getContent());
+    } else {
+
+      foreach ($xactions as $xaction) {
+        switch ($xaction->getTransactionType()) {
+          case PhrictionTransaction::TYPE_CONTENT:
+            $diff_uri = id(new PhutilURI(
+              '/phriction/diff/'.$object->getID().'/'))
+              ->alter('l', $this->getOldContent()->getVersion())
+              ->alter('r', $this->getNewContent()->getVersion());
+            $body->addLinkSection(
+              pht('DOCUMENT DIFF'),
+              PhabricatorEnv::getProductionURI($diff_uri));
+            break 2;
+          default:
+            break;
+        }
+      }
+
     }
 
     $body->addLinkSection(