Fixed an issue with building links from URLs which are already part of a link. Fixes issue ietf-tools#2175.

 - Legacy-Id: 12742

Author: levkowetz

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))