From 9c6444bf681ec48e3832282906d1d2cfad586cb5 Mon Sep 17 00:00:00 2001
From: Simon McVittie <http://smcv.pseudorandom.co.uk/>
Date: Fri, 11 Jul 2008 23:57:47 +0100
Subject: [PATCH] meta plugin: if uuid looks like it is in fact a UUID, prepend
 "urn:uuid" (otherwise leave it alone, so we can assign non-UUID <id>s to Atom
 items to avoid planet-flooding)

---
 IkiWiki/Plugin/meta.pm | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/IkiWiki/Plugin/meta.pm b/IkiWiki/Plugin/meta.pm
index 81355ef6d..02c99e9f6 100644
--- a/IkiWiki/Plugin/meta.pm
+++ b/IkiWiki/Plugin/meta.pm
@@ -85,7 +85,13 @@ sub preprocess (@) { #{{{
 		# fallthrough
 	}
 	elsif ($key eq 'uuid') {
-		$pagestate{$page}{meta}{uuid}=HTML::Entities::encode_numeric($value);
+		my $abs = $value;
+
+		if ($abs =~ m/^[[:xdigit:]]{8}-[[:xdigit:]]{4}-[[:xdigit]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{12}$/) {
+			$abs = lc "urn:uuid:$abs";
+		}
+
+		$pagestate{$page}{meta}{uuid}=HTML::Entities::encode_numeric($abs);
 		# fallthrough
 	}
 	elsif ($key eq 'license') {
-- 
2.39.2