From b28ab61f58422fb2a459454c04c16edf3afc19fd Mon Sep 17 00:00:00 2001
From: Arne Heizmann <timwi@users.mediawiki.org>
Date: Tue, 10 Aug 2004 22:48:02 +0000
Subject: [PATCH] With &debugmsg=1, PHP output a warning because the link trail
 no longer constituted a valid regular expression; fix that

---
 includes/GlobalFunctions.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/includes/GlobalFunctions.php b/includes/GlobalFunctions.php
index a32fa8c263..7508fb9f60 100644
--- a/includes/GlobalFunctions.php
+++ b/includes/GlobalFunctions.php
@@ -290,7 +290,12 @@ $wgReplacementKeys = array( "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9"
 function wfMsg( $key ) {
 	global $wgRequest;
 	if ( $wgRequest->getVal( 'debugmsg' ) )
-		return $key;
+	{
+		if ( $key == 'linktrail' /* a special case where we want to return something specific */ )
+			return "/^()(.*)$/sD";
+		else
+			return $key;
+	}
 	$args = func_get_args();
 	if ( count( $args ) ) {
 		array_shift( $args );
-- 
2.20.1