From d8dfc33b8b12651922c1d4d8fa2a610110e18a06 Mon Sep 17 00:00:00 2001
From: Parker Moore <parkrmoore@gmail.com>
Date: Fri, 4 Aug 2017 15:53:26 -0400
Subject: [PATCH] Memoize the return value of Document#url (#6266)

Merge pull request 6266
---
 lib/jekyll/document.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/jekyll/document.rb b/lib/jekyll/document.rb
index b6493f3c..d42e544c 100644
--- a/lib/jekyll/document.rb
+++ b/lib/jekyll/document.rb
@@ -204,7 +204,7 @@ module Jekyll
     #
     # Returns the computed URL for the document.
     def url
-      @url = URL.new({
+      @url ||= URL.new({
         :template     => url_template,
         :placeholders => url_placeholders,
         :permalink    => permalink,