text: # ext/preprocessors.py
  # Copyright (C) 2006-2011 the Mako authors and contributors <see AUTHORS file>
  #
  # This module is part of Mako and is released under
  # the MIT License: http://www.opensource.org/licenses/mit-license.php
  
  """preprocessing functions, used with the 'preprocessor' 
  argument on Template, TemplateLookup"""
  
  import re
  
  def convert_comments(text):
      """preprocess old style comments.
   
      example:
   
      from mako.ext.preprocessors import convert_comments
      t = Template(..., preprocessor=preprocess_comments)"""
      return re.sub(r'(?<=\n)\s*#[^#]', "##", text)
  
  