From 29f0aa39d2239122782fa5c1a547827cf7acedb0 Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@tremily.us>
Date: Fri, 22 Mar 2013 00:13:37 -0400
Subject: [PATCH] content: Don't update static content

---
 pelican/contents.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pelican/contents.py b/pelican/contents.py
index fd33bc4c..1b604f19 100644
--- a/pelican/contents.py
+++ b/pelican/contents.py
@@ -171,6 +171,9 @@ class Content(object):
         :param siteurl: siteurl which is locally generated by the writer in
                         case of RELATIVE_URLS.
         """
+        if not content:
+            return content
+
         hrefs = re.compile(r"""
             (?P<markup><\s*[^\>]*  # match tag with src and href attr
                 (?:href|src)\s*=)