search: try to fill in ghosts when generating thread skeleton

Since we attempt to fill in threads by Subject, our thread
skeletons can cross actual thread IDs, leading to the
possibility of false ghosts showing up in the skeleton.
Try to fill in the ghosts as well as possible by performing
a message lookup.

1 files changed, 4 insertions, 2 deletions

diff --git a/lib/PublicInbox/SearchView.pm b/lib/PublicInbox/SearchView.pm
index a5974034..c42cf2d6 100644
--- a/lib/PublicInbox/SearchView.pm
+++ b/lib/PublicInbox/SearchView.pm
@@ -207,7 +207,8 @@ sub sort_relevance {
 sub mset_thread {
         my ($ctx, $mset, $q) = @_;
         my %pct;
-        my $msgs = $ctx->{srch}->retry_reopen(sub { [ map {
+        my $srch = $ctx->{srch};
+        my $msgs = $srch->retry_reopen(sub { [ map {
                 my $i = $_;
                 my $smsg = PublicInbox::SearchMsg->load_doc($i->get_document);
                 $pct{$smsg->mid} = $i->get_percent;
@@ -215,7 +216,8 @@ sub mset_thread {
         } ($mset->items) ]});
         my $r = $q->{r};
         my $rootset = PublicInbox::SearchThread::thread($msgs,
-                $r ? sort_relevance(\%pct) : *PublicInbox::View::sort_ts);
+                $r ? sort_relevance(\%pct) : *PublicInbox::View::sort_ts,
+                $srch);
         my $skel = search_nav_bot($mset, $q). "<pre>";
         my $inbox = $ctx->{-inbox};
         $ctx->{-upfx} = '';