From: Jeroen De Dauw <jeroendedauw@users.mediawiki.org>
Date: Thu, 9 Feb 2012 01:34:20 +0000 (+0000)
Subject: put in r110285 again now that 1.19 branched
X-Git-Tag: 1.31.0-rc.0~24841
X-Git-Url: http://git.cyclocoop.org/%24self?a=commitdiff_plain;h=14d2728ea69f972f1f981251708cbb0396e5f92c;p=lhc%2Fweb%2Fwiklou.git

put in r110285 again now that 1.19 branched
---

diff --git a/includes/Title.php b/includes/Title.php
index b91c55c1d8..b7eea8b242 100644
--- a/includes/Title.php
+++ b/includes/Title.php
@@ -4164,7 +4164,21 @@ class Title {
 	 * @return Bool
 	 */
 	public function isKnown() {
-		return $this->isAlwaysKnown() || $this->exists();
+		$isKnown = null;
+		
+		/**
+		 * Allows overriding default behaviour for determining if a page exists.
+		 * If $isKnown is kept as null, regular checks happen. If it's
+		 * a boolean, this value is returned by the isKnown method.
+		 * 
+		 * @since 1.20
+		 * 
+		 * @param Title $title
+		 * @param boolean|null $isKnown
+		 */
+		wfRunHooks( 'TitleIsKnown', array( $this, &$isKnown ) );
+		
+		return is_null( $isKnown ) ? ( $this->isAlwaysKnown() || $this->exists() ) : $isKnown;
 	}
 
 	/**