X-Git-Url: http://www.git.stargrave.org/?p=public-inbox.git;a=blobdiff_plain;f=lib%2FPublicInbox%2FSearchIdx.pm;h=cfb9a0880f622d351ad043dcae1142f5b8a3901a;hp=0824db03c113a5d001b846b3f4c115ae1a3d7de2;hb=2aa29ee6a35f5be2d76c39ccc50bf7a34075e2bd;hpb=2a5b77c0cdd9bb1f726fd05b01d3095b029367ac

diff --git a/lib/PublicInbox/SearchIdx.pm b/lib/PublicInbox/SearchIdx.pm
index 0824db03..cfb9a088 100644
--- a/lib/PublicInbox/SearchIdx.pm
+++ b/lib/PublicInbox/SearchIdx.pm
@@ -414,9 +414,8 @@ sub link_message {
 
 	# last References should be IRT, but some mail clients do things
 	# out of order, so trust IRT over References iff IRT exists
-	my @refs = ($hdr->header_raw('References'),
-			$hdr->header_raw('In-Reply-To'));
-	@refs = ((join(' ', @refs)) =~ /<([^>]+)>/g);
+	my @refs = (($hdr->header_raw('References') || '') =~ /<([^>]+)>/g);
+	push(@refs, (($hdr->header_raw('In-Reply-To') || '') =~ /<([^>]+)>/g));
 
 	my $tid;
 	if (@refs) {