From 737dd2857235970b598a49dc1d987c73c8a38a08 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Thu, 18 May 2017 01:36:40 +0200
Subject: [PATCH 1/1] source: link back to resulting page

---
 common.inc.plp | 1 +
 source.plp     | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/common.inc.plp b/common.inc.plp
index 6672bd5..5f7cb25 100644
--- a/common.inc.plp
+++ b/common.inc.plp
@@ -180,6 +180,7 @@ EOT
 sub showlink {
 	my ($title, $href, $selected) = @_;
 	return sprintf(
+		!$href ? '%s' :
 		$selected ? '<strong>%s</strong>' : '<a href="%2$s">%s</a>',
 		EscapeHTML($title), EscapeHTML($href)
 	);
diff --git a/source.plp b/source.plp
index 931b3dc..ea85628 100644
--- a/source.plp
+++ b/source.plp
@@ -54,7 +54,8 @@ if (not $source) {
 	say "</ul>\n";
 }
 else {
-	say "<h1>Source of $source</h1>";
+	my $href = showlink($source, $source =~ m{\A (\w+) \.plp \z}x && "/$1");
+	say "<h1>Source of $href</h1>";
 
 	if ($source =~ m{(?:/|^)\.}) {
 		die "File request not permitted\n";
-- 
2.30.0