From 3354e8d550e6d650a0b1681fcad427559aea25ce Mon Sep 17 00:00:00 2001
From: Matthew Flaschen <mflaschen@wikimedia.org>
Date: Tue, 5 Jul 2016 20:08:32 -0400
Subject: [PATCH] Show parser output for diffs unless extension aborts

It was backwards.

Bug: T139433
Change-Id: Ie370da9d77e1d7608e2d5492f9d34094af233d0b
---
 includes/diff/DifferenceEngine.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/diff/DifferenceEngine.php b/includes/diff/DifferenceEngine.php
index c5e94c5010..deeb405fea 100644
--- a/includes/diff/DifferenceEngine.php
+++ b/includes/diff/DifferenceEngine.php
@@ -638,7 +638,7 @@ class DifferenceEngine extends ContextSource {
 				# WikiPage::getParserOutput() should not return false, but just in case
 				if ( $parserOutput ) {
 					// Allow extensions to change parser output here
-					if ( !Hooks::run( 'DifferenceEngineRenderRevisionAddParserOutput', [ $this, $out, $parserOutput, $wikiPage ] ) ) {
+					if ( Hooks::run( 'DifferenceEngineRenderRevisionAddParserOutput', [ $this, $out, $parserOutput, $wikiPage ] ) ) {
 						$out->addParserOutput( $parserOutput );
 					}
 				}
-- 
2.20.1