From 42a52c6e77f5cde38de6907afda0a61ba4d4d67f Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 10 Apr 2016 11:46:58 +0530
Subject: [PATCH] Use a missing: URL scheme for missing resources

---
 src/calibre/srv/render_book.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/calibre/srv/render_book.py b/src/calibre/srv/render_book.py
index 017650df8d..1a700d2b5d 100644
--- a/src/calibre/srv/render_book.py
+++ b/src/calibre/srv/render_book.py
@@ -11,6 +11,7 @@ from itertools import count
 from functools import partial
 from future_builtins import map
 from urlparse import urlparse
+from urllib import quote
 
 from cssutils import replaceUrls
 
@@ -143,7 +144,7 @@ class Container(ContainerBase):
                     frag = urlunquote(frag)
                     url = resource_template.format(encode_url(name, frag))
                 else:
-                    url = 'link-to-missing-item-' + name
+                    url = 'missing:' + quote(name)
                 changed.add(base)
             return url