www: make mirror instructions more prominent

In order to fight the misconception that public-inboxes are
centralized, anchor "#mirror" to the clone instructions and
place an emphasis on "mirror", not just cloning.

While we're at it, better describe multi-epoch -V2 inboxes,
since some users do not seem to realize epochs consist of
different data.

diff --git a/lib/PublicInbox/WwwStream.pm b/lib/PublicInbox/WwwStream.pm
index e06e3456ae19cbf163fcae457cce533f58bf33c0..f1b5119a54ff2144f749d1bf957097c642758636 100644 (file)
--- a/lib/PublicInbox/WwwStream.pm
+++ b/lib/PublicInbox/WwwStream.pm
@@ -50,9 +50,10 @@ sub html_top ($) {
        } elsif ($ctx->{qp}->{t}) {
                $top = qq(<a\nhref="./">$top</a>);
        }
-       my $links = "<a\nhref=\"$help\">help</a> / ".
-                       "<a\nhref=\"$color\">color</a> / ".
-                       "<a\nhref=\"$atom\">Atom feed</a>";
+       my $links = qq(<a\nhref="$help">help</a> / ).
+                       qq(<a\nhref="$color">color</a> / ).
+                       qq(<a\nhref=#mirror>mirror</a> / ).
+                       q(<a\nhref="$atom">Atom feed</a>);
        if ($ibx->search) {
                my $q_val = delete($ctx->{-q_value_html}) // '';
                $q_val = qq(\nvalue="$q_val") if $q_val ne '';
@@ -83,7 +84,11 @@ sub code_footer ($) {
 
 sub _html_end {
        my ($ctx) = @_;
-       my $urls = 'Archives are clonable:';
+       my $urls = <<EOF;
+<a
+id=mirror>This inbox may be cloned and mirrored by anyone:</a>
+EOF
+
        my $ibx = $ctx->{-inbox};
        my $desc = ascii_html($ibx->description);
 
@@ -94,12 +99,18 @@ sub _html_end {
        my %seen = ($http => 1);
        if (defined($max)) { # v2
                for my $i (0..$max) {
-                       # old parts my be deleted:
+                       # old epochs my be deleted:
                        -d "$ibx->{inboxdir}/git/$i.git" or next;
                        my $url = "$http/$i";
                        $seen{$url} = 1;
                        push @urls, "$url $dir/git/$i.git";
                }
+               my $nr = scalar(@urls);
+               if ($nr > 1) {
+                       $urls .= "\n\t# this inbox consists of $nr epochs:";
+                       $urls[0] .= "\t# oldest";
+                       $urls[-1] .= "\t# newest";
+               }
        } else { # v1
                push @urls, $http;
        }
@@ -111,12 +122,7 @@ sub _html_end {
                push @urls, $u =~ /\Ahttps?:/ ? qq(<a\nhref="$u">$u</a>) : $u;
        }
 
-       if (defined($max) || scalar(@urls) > 1) {
-               $urls .= "\n" .
-                       join("\n", map { "\tgit clone --mirror $_" } @urls);
-       } else {
-               $urls .= " git clone --mirror $urls[0]";
-       }
+       $urls .= "\n" .  join("\n", map { "\tgit clone --mirror $_" } @urls);
        if (defined $max) {
                my $addrs = $ibx->{address};
                $addrs = join(' ', @$addrs) if ref($addrs) eq 'ARRAY';
@@ -134,16 +140,19 @@ EOF
        }
 
        my $cfg_link = ($ctx->{-upfx} // '').'_/text/config/raw';
-       $urls .= qq(\nExample <a\nhref="$cfg_link">config snippet</a> for mirrors\n);
+       $urls .= <<EOF;
+
+Example <a
+href="$cfg_link">config snippet</a> for mirrors.
+EOF
        my @nntp = map { qq(<a\nhref="$_">$_</a>) } @{$ibx->nntp_url};
        if (@nntp) {
-               $urls .= "\n";
                $urls .= @nntp == 1 ? 'Newsgroup' : 'Newsgroups are';
                $urls .= ' available over NNTP:';
                $urls .= "\n\t" . join("\n\t", @nntp) . "\n";
        }
        if ($urls =~ m!\b[^:]+://\w+\.onion/!) {
-               $urls .= "\n note: .onion URLs require Tor: ";
+               $urls .= " note: .onion URLs require Tor: ";
                $urls .= qq[<a\nhref="$TOR_URL">$TOR_URL</a>];
        }
        '<hr><pre>'.join("\n\n",