feed: avoid redirect on permalink

This saves one round-trip request response so reduces latency over
slow links.  The redirect only exists for convenience and isn't 100%
reliable in case the Message-ID terminates with a .(html|txt)
suffix.

1 files changed, 2 insertions, 3 deletions

diff --git a/lib/PublicInbox/Feed.pm b/lib/PublicInbox/Feed.pm
index 1c6d1efd..0a08c7f2 100644
--- a/lib/PublicInbox/Feed.pm
+++ b/lib/PublicInbox/Feed.pm
@@ -243,9 +243,8 @@ sub add_to_feed {
         my $mid = $mime->header_obj->header_raw('Message-ID');
         defined $mid or return 0;
         $mid = PublicInbox::Hval->new_msgid($mid);
-        my $href = $mid->as_href;
-        my $content = PublicInbox::View->as_feed_entry($mime,
-                                                        "$fullurl$href.html");
+        my $href = $mid->as_href . '.html';
+        my $content = PublicInbox::View->as_feed_entry($mime, $fullurl . $href);
         defined($content) or return 0;
 
         my $subject = mime_header($mime, 'Subject') or return 0;