From c4183f56aab666b38b1c11a182231fb1f11e6a6e Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Mon, 25 Apr 2016 01:00:24 +0000
Subject: www: add rel=next and rel=prev navigation hints

This can makes navigation easier with some browsers or
or browser extensions.

ref: https://www.w3.org/TR/html/links.html#sequential-link-types
---
 lib/PublicInbox/Feed.pm | 2 +-
 lib/PublicInbox/View.pm | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/PublicInbox/Feed.pm b/lib/PublicInbox/Feed.pm
index 096bff9d..d433726f 100644
--- a/lib/PublicInbox/Feed.pm
+++ b/lib/PublicInbox/Feed.pm
@@ -185,7 +185,7 @@ sub nav_footer {
 	my $anchor = $state->{anchor_idx};
 
 	if ($last) {
-		$next = qq!<a\nhref="?$param=$last">next</a>!;
+		$next = qq!<a\nhref="?$param=$last"\nrel=next>next</a>!;
 	}
 	if ($old_r) {
 		$head = $cgi->path_info;
diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index 177a1a6f..63810dcb 100644
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -513,12 +513,12 @@ sub html_footer {
 		if ($p) {
 			$p = PublicInbox::Hval->new_msgid($p);
 			$p = $p->as_href;
-			$irt = "<a\nhref=\"$upfx$p/\">parent</a> ";
+			$irt = "<a\nhref=\"$upfx$p/\"rel=prev>parent</a> ";
 		} else {
 			$irt = ' ' x length('parent ');
 		}
 		if ($next) {
-			$irt .= "<a\nhref=\"$upfx$next/\">next</a> ";
+			$irt .= "<a\nhref=\"$upfx$next/\"\nrel=next>next</a> ";
 		} else {
 			$irt .= ' ' x length('next ');
 		}
-- 
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