old_contents: #-----------------------------------------------------------------------------
  # Copyright (c) 2012, the IPython Development Team.
  #
  # Distributed under the terms of the Modified BSD License.
  #
  # The full license is in the file COPYING.txt, distributed with this software.
  #-----------------------------------------------------------------------------
  
  from __future__ import absolute_import
  
  # Stdlib imports
  import re
  
  from IPython.utils.text import indent
  from markdown import markdown
  from .utils import remove_ansi
  from .utils import highlight, ansi2html
  from .utils import markdown2latex
  from .utils import highlight2latex
  from .utils import get_lines
  
  from .config import GlobalConfigurable
  
  from IPython.config.configurable import Configurable
  from IPython.utils.traitlets import List
  
  #-----------------------------------------------------------------------------
  # Class declarations
  #-----------------------------------------------------------------------------
  
  class ConfigurableFilter(GlobalConfigurable):
      """Configurable Jinja Filter"""
  
      def __init__(self, config=None, **kw):
          super(ConfigurableFilter, self).__init__(config=config, **kw)
  
      def __call__(self, *args, **kwargs):
          raise NotImplementedError('should be implemented by subclass')
  
  
  class FilterDataType(ConfigurableFilter):
      """ return the preferd displayed format
      """
  
      def __call__(self, output):
          """ return the first availlable format in priority """
          for fmt in self.display_data_priority:
              if fmt in output:
                  return [fmt]
          raise Exception("did not found any format I can extract in output, shoudl at lest have one")
  
  
  
  def rm_fake(strng):
      return strng.replace('/files/', '')
  
  def rm_dollars(strng):
      return strng.strip('$')
  
  def python_comment(string):
      return '# '+'\n# '.join(string.split('\n'))
  
  LATEX_SUBS = (
      (re.compile(r'\\'), r'\\textbackslash'),
      (re.compile(r'([{}_#%&$])'), r'\\\1'),
      (re.compile(r'~'), r'\~{}'),
      (re.compile(r'\^'), r'\^{}'),
      (re.compile(r'"'), r"''"),
      (re.compile(r'\.\.\.+'), r'\\ldots'),
  )
  
  def escape_tex(value):
      newval = value
      for pattern, replacement in LATEX_SUBS:
          newval = pattern.sub(replacement, newval)
      return newval
  
  
new_contents: #-----------------------------------------------------------------------------
  # Copyright (c) 2012, the IPython Development Team.
  #
  # Distributed under the terms of the Modified BSD License.
  #
  # The full license is in the file COPYING.txt, distributed with this software.
  #-----------------------------------------------------------------------------
  
  from __future__ import absolute_import
  
  # Stdlib imports
  import re
  
  from IPython.utils.text import indent
  from markdown import markdown
  from .utils import remove_ansi
  from .utils import highlight, ansi2html
  from .utils import markdown2latex
  from .utils import highlight2latex
  from .utils import get_lines
  
  from .config import GlobalConfigurable
  
  from IPython.config.configurable import Configurable
  from IPython.utils.traitlets import List
  
  #-----------------------------------------------------------------------------
  # Class declarations
  #-----------------------------------------------------------------------------
  
  class ConfigurableFilter(GlobalConfigurable):
      """Configurable Jinja Filter"""
  
      def __init__(self, config=None, **kw):
          super(ConfigurableFilter, self).__init__(config=config, **kw)
  
      def __call__(self, *args, **kwargs):
          raise NotImplementedError('should be implemented by subclass')
  
  
  class FilterDataType(ConfigurableFilter):
      """ return the preferd displayed format
      """
  
      def __call__(self, output):
          """ return the first availlable format in priority """
          for fmt in self.display_data_priority:
              if fmt in output:
                  return [fmt]
          return []
  
  
  
  def rm_fake(strng):
      return strng.replace('/files/', '')
  
  def rm_dollars(strng):
      return strng.strip('$')
  
  def python_comment(string):
      return '# '+'\n# '.join(string.split('\n'))
  
  LATEX_SUBS = (
      (re.compile(r'\\'), r'\\textbackslash'),
      (re.compile(r'([{}_#%&$])'), r'\\\1'),
      (re.compile(r'~'), r'\~{}'),
      (re.compile(r'\^'), r'\^{}'),
      (re.compile(r'"'), r"''"),
      (re.compile(r'\.\.\.+'), r'\\ldots'),
  )
  
  def escape_tex(value):
      newval = value
      for pattern, replacement in LATEX_SUBS:
          newval = pattern.sub(replacement, newval)
      return newval
  
  
subject: fix non existing output