From ccfbde8d33f2d2443c6fd5d859ed0469b8c4a173 Mon Sep 17 00:00:00 2001
From: Henrik Levkowetz <henrik@levkowetz.com>
Date: Thu, 26 Jan 2017 20:11:46 +0000
Subject: [PATCH] Fixed an issue with building links from URLs which are
 already part of a link.  Fixes issue #2175.  - Legacy-Id: 12742

---
 ietf/doc/templatetags/ietf_filters.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ietf/doc/templatetags/ietf_filters.py b/ietf/doc/templatetags/ietf_filters.py
index 2ebc8e6fe..18c27572f 100644
--- a/ietf/doc/templatetags/ietf_filters.py
+++ b/ietf/doc/templatetags/ietf_filters.py
@@ -428,7 +428,10 @@ def format_history_text(text, trunc_words=25):
 
 @register.filter
 def format_snippet(text, trunc_words=25): 
-    full = keep_spacing(collapsebr(linebreaksbr(mark_safe(sanitize_html(urlize(text))))))
+    # urlize if there aren't already links present
+    if not 'href=' in text:
+        text = urlize(text)
+    full = keep_spacing(collapsebr(linebreaksbr(mark_safe(sanitize_html(text)))))
     snippet = truncatewords_html(full, trunc_words)
     if snippet != full:
         return mark_safe(u'<div class="snippet">%s<button class="btn btn-xs btn-default show-all"><span class="fa fa-caret-down"></span></button></div><div class="hidden full">%s</div>' % (snippet, full))