X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FSearchIdx.pm;h=fd0d320e8685fe34c37b5f07162d3e81da2f0c06;hb=1c9be46742295e943f7d919ee01ecbf134cbf493;hp=1142ca7a0f4c83a6aa4103edc79d91bd04944e5a;hpb=83425ef12e4b65cdcecd11ddcb38175d4a91d5a0;p=public-inbox.git

diff --git a/lib/PublicInbox/SearchIdx.pm b/lib/PublicInbox/SearchIdx.pm
index 1142ca7a..fd0d320e 100644
--- a/lib/PublicInbox/SearchIdx.pm
+++ b/lib/PublicInbox/SearchIdx.pm
@@ -291,17 +291,12 @@ sub link_message {
 	my $mid = $smsg->mid;
 	my $mime = $smsg->{mime};
 	my $hdr = $mime->header_obj;
-	my $refs = $hdr->header_raw('References');
-	my @refs = defined $refs ? ($refs =~ /<([^>]+)>/g) : ();
-	my $irt = $hdr->header_raw('In-Reply-To');
-	if (defined $irt) {
-		if ($irt eq '') {
-			$irt = undef;
-		} else {
-			$irt = mid_clean($irt);
-			$irt = undef if $mid eq $irt;
-		}
-	}
+
+	# last References should be IRT, but some mail clients do things
+	# out of order, so trust IRT over References iff IRT exists
+	my @refs = ($hdr->header_raw('References'),
+			$hdr->header_raw('In-Reply-To'));
+	@refs = ((join(' ', @refs)) =~ /<([^>]+)>/g);
 
 	my $tid;
 	if (@refs) {
@@ -309,15 +304,6 @@ sub link_message {
 		my @orig_refs = @refs;
 		@refs = ();
 
-		if (defined $irt) {
-			# to check MAX_MID_SIZE
-			push @orig_refs, $irt;
-
-			# below, we will ensure IRT (if specified)
-			# is the last References
-			$uniq{$irt} = 1;
-		}
-
 		# prevent circular references via References: here:
 		foreach my $ref (@orig_refs) {
 			if (length($ref) > MAX_MID_SIZE) {
@@ -329,10 +315,6 @@ 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
-	push @refs, $irt if defined $irt;
-
 	if (@refs) {
 		$smsg->{references} = '<'.join('> <', @refs).'>';
 
@@ -348,7 +330,7 @@ sub link_message {
 			merge_threads($self, $tid, $ptid);
 		}
 	} else {
-		$tid = $self->next_thread_id;
+		$tid = defined $old_tid ? $old_tid : $self->next_thread_id;
 	}
 	$doc->add_term(xpfx('thread') . $tid);
 }
@@ -638,7 +620,7 @@ sub with_umask {
 	my $rv = eval { $cb->() };
 	my $err = $@;
 	umask $old;
-	die $err if $@;
+	die $err if $err;
 	$rv;
 }