From 77c17910a9f3bf145c65025e45de9b3247cdb224 Mon Sep 17 00:00:00 2001
From: Tim Starling <tstarling@users.mediawiki.org>
Date: Thu, 19 Jan 2006 17:12:37 +0000
Subject: [PATCH] Make Revision::getPrevious() and Revision::getNext() return
 null if there are no more revisions to fetch in that direction. They
 previously just started from the current revision again.

---
 includes/Revision.php | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/includes/Revision.php b/includes/Revision.php
index c390df0636..0398a9baf4 100644
--- a/includes/Revision.php
+++ b/includes/Revision.php
@@ -395,7 +395,11 @@ class Revision {
 	 */
 	function getPrevious() {
 		$prev = $this->mTitle->getPreviousRevisionID( $this->mId );
-		return Revision::newFromTitle( $this->mTitle, $prev );
+		if ( $prev ) {
+			return Revision::newFromTitle( $this->mTitle, $prev );
+		} else {
+			return null;
+		}
 	}
 
 	/**
@@ -403,7 +407,11 @@ class Revision {
 	 */
 	function getNext() {
 		$next = $this->mTitle->getNextRevisionID( $this->mId );
-		return Revision::newFromTitle( $this->mTitle, $next );
+		if ( $next ) {
+			return Revision::newFromTitle( $this->mTitle, $next );
+		} else {
+			return null;
+		}
 	}
 	/**#@-*/
 
-- 
2.20.1