M lib/github/markup.rb → lib/github/markup.rb

@@ -20,7 +20,7 @@ end
     end
 
     def render(filename, content)
-      renderer(filename)[content]
+      renderer(filename)[content] || content
     end
   end
 end

M test/markup_test.rb → test/markup_test.rb

@@ -24,4 +24,10 @@ \t<li>Two</li>
 </ul>
 textile
   end
+
+  def test_graceful_fail
+    content = "* One\n* Two"
+    text = GitHub::Markup.render('README.imadeitup', content)
+    assert_equal content, text
+  end
 end