python-docutils fails to build in trusty with python 2.7.9

[Matthias Klose]

seen in a test rebuild with python 2.7.9
https://launchpad.net/ubuntu/+archive/test-rebuild-20150317/+build/7080449

======================================================================
ERROR: test_invalid_raw_xml (test_writers.test_docutils_xml.DocutilsXMLTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/build/buildd/python-docutils-0.11/test/test_writers/test_docutils_xml.py", line 181, in test_invalid_raw_xml
    result = publish_xml(settings, invalid_raw_xml_source)
  File "/build/buildd/python-docutils-0.11/test/test_writers/test_docutils_xml.py", line 127, in publish_xml
    settings_overrides=settings)
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/core.py", line 414, in publish_string
    enable_exit_status=enable_exit_status)
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/core.py", line 662, in publish_programmatically
    output = pub.publish(enable_exit_status=enable_exit_status)
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/core.py", line 219, in publish
    output = self.writer.write(self.document, self.destination)
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/writers/__init__.py", line 80, in write
    self.translate()
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/writers/docutils_xml.py", line 74, in translate
    self.document.walkabout(visitor)
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/nodes.py", line 174, in walkabout
    if child.walkabout(visitor):
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/nodes.py", line 174, in walkabout
    if child.walkabout(visitor):
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/nodes.py", line 166, in walkabout
    visitor.dispatch_visit(self)
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/nodes.py", line 1882, in dispatch_visit
    return method(node)
  File "/build/buildd/python-docutils-0.11/build/py2/docutils/writers/docutils_xml.py", line 184, in visit_raw
    col_num, line_num, node.astext())
TypeError: %d format: a number is required, not NoneType

----------------------------------------------------------------------
Ran 1239 tests in 6.543s

FAILED (errors=1)
Elapsed time: 7.075 seconds
make: *** [build-stamp] Error 123

[Dmitry Shachnev (mitya57)]

Yay for breaking compatibility! Anyway, confirmed, I will try to look at this.

[Matthias Klose (doko)]

please try to identify the python commit that caused this one

[Dmitry Shachnev (mitya57)]

Reverting Lib/xml/sax/expatreader.py part of https://hg.python.org/cpython/rev/f7ddec2e9e93 seems to fix this.