view: dedupe_subject: allow "0" as a valid Subject

[public-inbox.git] / lib / PublicInbox / View.pm

diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index 91443f55c177bc12d8578a7a4d95a4eae1814333..f0584cb7f0ee0211f538e4aca55ee9ac328273b9 100644 (file)
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -10,7 +10,8 @@ use bytes (); # only for bytes::length
 use PublicInbox::MsgTime qw(msg_datestamp);
 use PublicInbox::Hval qw(ascii_html obfuscate_addrs prurl mid_href);
 use PublicInbox::Linkify;
-use PublicInbox::MID qw/id_compress mids mids_for_index references/;
+use PublicInbox::MID qw(id_compress mids mids_for_index references
+                       $MID_EXTRACT);
 use PublicInbox::MsgIter;
 use PublicInbox::Address;
 use PublicInbox::WwwStream;
@@ -18,7 +19,7 @@ use PublicInbox::Reply;
 use PublicInbox::ViewDiff qw(flush_diff);
 use POSIX qw(strftime);
 use Time::Local qw(timegm);
-use PublicInbox::SearchMsg qw(subject_normalized);
+use PublicInbox::Smsg qw(subject_normalized);
 use constant COLS => 72;
 use constant INDENT => '  ';
 use constant TCHILD => '` ';
@@ -299,7 +300,7 @@ sub _th_index_lite {
        if (my $smsg = $node->{smsg}) {
                # delete saves about 200KB on a 1K message thread
                if (my $refs = delete $smsg->{references}) {
-                       ($$irt) = ($refs =~ m/<([^>]+)>\z/);
+                       ($$irt) = ($refs =~ m/$MID_EXTRACT\z/o);
                }
        }
        my $irt_map = $mapping->{$$irt} if defined $$irt;
@@ -503,9 +504,6 @@ sub attach_link ($$$$;$) {
        # spotting MUA problems:
        $ct =~ s/;.*// unless $err;
        $ct = ascii_html($ct);
-       my $desc = $part->header('Content-Description');
-       $desc = $fn unless defined $desc;
-       $desc = '' unless defined $desc;
        my $sfn;
        if (defined $fn && $fn =~ /\A$PublicInbox::Hval::FN\z/o) {
                $sfn = $fn;
@@ -517,10 +515,13 @@ sub attach_link ($$$$;$) {
        my $rv = $ctx->{obuf};
        $$rv .= qq($nl<a\nhref="$ctx->{mhref}$idx-$sfn">);
        if ($err) {
-               $$rv .= "[-- Warning: decoded text below may be mangled --]\n";
+               $$rv .= <<EOF;
+[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
+EOF
        }
        $$rv .= "[-- Attachment #$idx: ";
        my $ts = "Type: $ct, Size: $size bytes";
+       my $desc = $part->header('Content-Description') // $fn // '';
        $desc = ascii_html($desc);
        $$rv .= ($desc eq '') ? "$ts --]" : "$desc --]\n[-- $ts --]";
        $$rv .= "</a>\n";
@@ -575,7 +576,7 @@ sub add_text_body { # callback for msg_iter
        $s .= "\n" unless $s =~ /\n\z/s;
 
        # split off quoted and unquoted blocks:
-       my @sections = split(/((?:^>[^\n]*\n)+)/sm, $s);
+       my @sections = PublicInbox::MsgIter::split_quotes($s);
        $s = '';
        my $rv = $ctx->{obuf};
        if (defined($fn) || $depth > 0 || $err) {
@@ -887,20 +888,20 @@ sub missing_thread {
 sub dedupe_subject {
        my ($prev_subj, $subj, $val) = @_;
 
-       my $omit = ''; # '"' denotes identical text omitted
+       my $omit; # '"' denotes identical text omitted
        my (@prev_pop, @curr_pop);
        while (@$prev_subj && @$subj && $subj->[-1] eq $prev_subj->[-1]) {
                push(@prev_pop, pop(@$prev_subj));
                push(@curr_pop, pop(@$subj));
-               $omit ||= $val;
+               $omit //= $val;
        }
        pop @$subj if @$subj && $subj->[-1] =~ /^re:\s*/i;
        if (scalar(@curr_pop) == 1) {
-               $omit = '';
+               $omit = undef;
                push @$prev_subj, @prev_pop;
                push @$subj, @curr_pop;
        }
-       $omit;
+       $omit // '';
 }
 
 sub skel_dump { # walk_thread callback
@@ -1055,7 +1056,7 @@ sub acc_topic { # walk_thread callback
 sub dump_topics {
        my ($ctx) = @_;
        my $order = delete $ctx->{order}; # [ ds, subj1, subj2, subj3, ... ]
-       if (!@$order) {
+       unless ($order) {
                $ctx->{-html_tip} = '<pre>[No topics in range]</pre>';
                return 404;
        }