view: depend on SearchMsg for Message-ID

Since we need to handle messages with multiple and duplicate
Message-ID headers, our thread skeleton display must account
for that.

Since we have a "preferred" Message-ID in case of conflicts,
use it as the UUID in an Atom feed so readers do not get
confused by conflicts.

1 files changed, 3 insertions, 3 deletions

diff --git a/lib/PublicInbox/SearchMsg.pm b/lib/PublicInbox/SearchMsg.pm
index b944868f..e314fed1 100644
--- a/lib/PublicInbox/SearchMsg.pm
+++ b/lib/PublicInbox/SearchMsg.pm
@@ -6,7 +6,6 @@
 package PublicInbox::SearchMsg;
 use strict;
 use warnings;
-use Search::Xapian;
 use PublicInbox::MID qw/mid_clean mid_mime/;
 use PublicInbox::Address;
 use PublicInbox::MsgTime qw(msg_timestamp msg_datestamp);
@@ -165,9 +164,10 @@ sub mid ($;$) {
                 $self->{mid} = $mid;
         } elsif (my $rv = $self->{mid}) {
                 $rv;
+        } elsif ($self->{doc}) {
+                $self->{mid} = _get_term_val($self, 'Q', qr/\AQ/);
         } else {
-                $self->{mid} = _get_term_val($self, 'Q', qr/\AQ/) ||
-                                $self->_extract_mid;
+                $self->_extract_mid; # v1 w/o Xapian
         }
 }