diff --git a/common/lib/xmodule/xmodule/stringify.py b/common/lib/xmodule/xmodule/stringify.py
index dad964140f..1e3fa91210 100644
--- a/common/lib/xmodule/xmodule/stringify.py
+++ b/common/lib/xmodule/xmodule/stringify.py
@@ -12,9 +12,17 @@ def stringify_children(node):
fixed from
http://stackoverflow.com/questions/4624062/get-all-text-inside-a-tag-in-lxml
'''
- parts = ([node.text] +
- list(chain(*([etree.tostring(c), c.tail]
- for c in node.getchildren())
- )))
+ # Useful things to know:
+
+ # node.tostring() -- generates xml for the node, including start
+ # and end tags. We'll use this for the children.
+ # node.text -- the text after the end of a start tag to the start
+ # of the first child
+ # node.tail -- the text after the end this tag to the start of the
+ # next element.
+ parts = [node.text]
+ for c in node.getchildren():
+ parts.append(etree.tostring(c, with_tail=True))
+
# filter removes possible Nones in texts and tails
return ''.join(filter(None, parts))
diff --git a/common/lib/xmodule/xmodule/tests/test_stringify.py b/common/lib/xmodule/xmodule/tests/test_stringify.py
index 1c6ee855f3..29e99bef56 100644
--- a/common/lib/xmodule/xmodule/tests/test_stringify.py
+++ b/common/lib/xmodule/xmodule/tests/test_stringify.py
@@ -1,4 +1,4 @@
-from nose.tools import assert_equals
+from nose.tools import assert_equals, assert_true, assert_false
from lxml import etree
from xmodule.stringify import stringify_children
@@ -8,3 +8,32 @@ def test_stringify():
xml = etree.fromstring(html)
out = stringify_children(xml)
assert_equals(out, text)
+
+def test_stringify_again():
+ html = """A voltage source is non-linear!
+
+
+ \(V=V_C\)
+
+
+
+ But it is affine,
+ which means linear except for an offset.
+
+ """
+ xml = etree.fromstring(html)
+ out = stringify_children(xml)
+
+ print "output:"
+ print out
+
+ # Tracking strange content repeating bug
+ # Should appear once
+ assert_equals(out.count("But it is "), 1)