get rid of Message-ID compression entirely

Provide a fallback for legacy SHA-1 messages, but do not
advertise shorter URLs anymore for data portability concerns.

This fixes a regression introduced in
commit 81a9c1b476987d845b340ab9013d26cf4487cb9a
("search: disable Message-ID compression in Xapian")
which ended up breaking thread-related endpoints for
large Message-IDs, as lookups on the SHA-1 message no longer
worked.

1 files changed, 2 insertions, 3 deletions

diff --git a/lib/PublicInbox/Feed.pm b/lib/PublicInbox/Feed.pm
index 8fc65fb5..2284f239 100644
--- a/lib/PublicInbox/Feed.pm
+++ b/lib/PublicInbox/Feed.pm
@@ -9,7 +9,7 @@ use Date::Parse qw(strptime);
 use PublicInbox::Hval;
 use PublicInbox::GitCatFile;
 use PublicInbox::View;
-use PublicInbox::MID qw/mid_clean mid_compress mid2path/;
+use PublicInbox::MID qw/mid_clean mid2path/;
 use POSIX qw/strftime/;
 use constant {
         DATEFMT => '%Y-%m-%dT%H:%M:%SZ', # atom standard
@@ -393,8 +393,7 @@ sub add_topic {
                         my $mime = do_cat_mail($git, $path) or return 0;
                         $header_obj = $mime->header_obj;
                 }
-                my $mid = $header_obj->header('Message-ID');
-                $mid = mid_compress(mid_clean($mid));
+                my $mid = mid_clean($header_obj->header('Message-ID'));
                 $u = $enc_utf8->decode($u);
                 push @$order, [ $mid, $ts, $u, $subj, $topic ];
                 return 1;