Ticket #13202: 13202.diff

docs/ref/contrib/index.txt

@@ -134 +134 @@
 
 A collection of template filters that implement common markup languages:
 
-    * ``textile`` -- implements `Textile`_
-    * ``markdown`` -- implements `Markdown`_
-    * ``restructuredtext`` -- implements `ReST (ReStructured Text)`_
+    * ``textile`` -- implements `Textile`_ -- requires `PyTextile`_
+    * ``markdown`` -- implements `Markdown`_ -- requires `Python-markdown`_
+    * ``restructuredtext`` -- implements `ReST (ReStructured Text)`_ -- requires `doc-utils`_
 
 In each case, the filter expects formatted markup as a string and returns a
 string representing the marked-up text. For example, the ``textile`` filter
-converts text that is marked-up in Textile format to HTML.
+converts text that is marked-up in Textile format to HTML. If the required 
+library is not installed, the filter will silently fail and return the 
+un-marked-up text.
 
 To activate these filters, add ``'django.contrib.markup'`` to your
 :setting:`INSTALLED_APPS` setting. Once you've done that, use ``{% load markup %}`` in
@@ -150 +152 @@
 .. _Textile: http://en.wikipedia.org/wiki/Textile_%28markup_language%29
 .. _Markdown: http://en.wikipedia.org/wiki/Markdown
 .. _ReST (ReStructured Text): http://en.wikipedia.org/wiki/ReStructuredText
+.. _PyTextile: http://loopcore.com/python-textile/
+.. _Python-markdown: http://www.freewisdom.org/projects/python-markdown
+.. _doc-utils: http://docutils.sf.net/
 
 messages
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