view: don't kill topic summarization for level==0

Unlinked threads with similar (but not identical) subjects
could be hidden as a result.

diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index 15d846a635425dc66c7b2ffe37cd11a1e24e7453..a3a955b2b520515340e57f4bee289cad4ab147f6 100644 (file)
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -817,7 +817,9 @@ sub add_topic {
                $topic = $subj;
 
                # kill "[PATCH v2]" etc. for summarization
-               $topic =~ s/\A\s*\[[^\]]+\]\s*//g;
+               unless ($level == 0) {
+                       $topic =~ s/\A\s*\[[^\]]+\]\s*//g;
+               }
                $topic = substr($topic, 0, 30);
 
                if (++$state->{subjs}->{$topic} == 1) {