diff options
| -rw-r--r-- | lib/PublicInbox/Mbox.pm | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/lib/PublicInbox/Mbox.pm b/lib/PublicInbox/Mbox.pm index 9f20580e..ffa6fa47 100644 --- a/lib/PublicInbox/Mbox.pm +++ b/lib/PublicInbox/Mbox.pm @@ -48,11 +48,21 @@ sub emit_msg { my $base = $feed_opts->{url}; my $mid = mid_clean($header_obj->header('Message-ID')); $mid = uri_escape_utf8($mid); - my @archived_at = $header_obj->header('Archived-At'); - push @archived_at, "<$base$mid/>"; - $header_obj->header_set('Archived-At', @archived_at); - $header_obj->header_set('List-Archive', "<$base>"); - $header_obj->header_set('List-Post', "<mailto:$feed_opts->{id_addr}>"); + my %append = ( + 'Archived-At' => "<$base$mid/>", + 'List-Archive' => "<$base>", + 'List-Post' => "<mailto:$feed_opts->{id_addr}>", + ); + while (my ($k, $v) = each %append) { + my @v = $header_obj->header($k); + foreach (@v) { + if ($v eq $_) { + $v = undef; + last; + } + } + $header_obj->header_set($k, @v, $v) if defined $v; + } my $buf = $header_obj->as_string; unless ($buf =~ /\AFrom /) { |