text: """
  Better Emphasis.
  
  pymdownx.betterem
  Add inteligent handling of to em and strong notations
  
  MIT license.
  
  Copyright (c) 2014 - 2016 Isaac Muse <isaacmuse@gmail.com>
  
  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
  documentation files (the "Software"), to deal in the Software without restriction, including without limitation
  the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
  and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in all copies or substantial portions
  of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
  TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
  CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  DEALINGS IN THE SOFTWARE.
  """
  from __future__ import absolute_import
  from __future__ import unicode_literals
  from markdown import Extension
  from markdown.inlinepatterns import SimpleTagPattern, DoubleTagPattern
  
  SMART_UNDER_CONTENT = r'((?:[^_]|_(?=\w|\s)|(?<=\s)_+?(?=\s))+?_*?)'
  SMART_STAR_CONTENT = r'((?:[^\*]|\*(?=[^\W_]|\*|\s)|(?<=\s)\*+?(?=\s))+?\**?)'
  SMART_UNDER_MIXED_CONTENT = r'((?:[^_]|_(?=\w)|(?<=\s)_+?(?=\s))+?_*)'
  SMART_STAR_MIXED_CONTENT = r'((?:[^\*]|\*(?=[^\W_]|\*)|(?<=\s)\*+?(?=\s))+?\**)'
  UNDER_CONTENT = r'(_|(?:(?<=\s)_|[^_])+?)'
  UNDER_CONTENT2 = r'((?:[^_]|(?<!_)_(?=\w))+?)'
  STAR_CONTENT = r'(\*|(?:(?<=\s)\*|[^\*])+?)'
  STAR_CONTENT2 = r'((?:[^\*]|(?<!\*)\*(?=[^\W_]|\*))+?)'
  
  # ***strong,em***
  STAR_STRONG_EM = r'(\*{3})(?!\s)(\*{1,2}|[^\*]+?)(?<!\s)\2'
  # ___strong,em___
  UNDER_STRONG_EM = r'(_{3})(?!\s)(_{1,2}|[^_]+?)(?<!\s)\2'
  # ***strong,em*strong**
  STAR_STRONG_EM2 = r'(\*{3})(?![\s\*])%s(?<!\s)\*%s(?<!\s)\*{2}' % (STAR_CONTENT, STAR_CONTENT2)
  # ___strong,em_strong__
  UNDER_STRONG_EM2 = r'(_{3})(?![\s_])%s(?<!\s)_%s(?<!\s)_{2}' % (UNDER_CONTENT, UNDER_CONTENT2)
  # ***em,strong**em*
  STAR_EM_STRONG = r'(\*{3})(?![\s\*])%s(?<!\s)\*{2}%s(?<!\s)\*' % (STAR_CONTENT2, STAR_CONTENT)
  # ___em,strong__em_
  UNDER_EM_STRONG = r'(_{3})(?![\s_])%s(?<!\s)_{2}%s(?<!\s)_' % (UNDER_CONTENT2, UNDER_CONTENT)
  # **strong**
  STAR_STRONG = r'(\*{2})(?!\s)%s(?<!\s)\2' % STAR_CONTENT2
  # __strong__
  UNDER_STRONG = r'(_{2})(?!\s)%s(?<!\s)\2' % UNDER_CONTENT2
  # *emphasis*
  STAR_EM = r'(\*)(?!\s)%s(?<!\s)\2' % STAR_CONTENT
  # _emphasis_
  UNDER_EM = r'(_)(?!\s)%s(?<!\s)\2' % UNDER_CONTENT
  
  # Smart rules for when "smart underscore" is enabled
  # SMART: ___strong,em___
  SMART_UNDER_STRONG_EM = r'(?<!\w)(_{3})(?![\s_])%s(?<!\s)\2(?!\w)' % SMART_UNDER_CONTENT
  # ___strong,em_ strong__
  SMART_UNDER_STRONG_EM2 = \
      r'(?<!\w)(_{3})(?![\s_])%s(?<!\s)_(?!\w)%s(?<!\s)_{2}(?!\w)' % (SMART_UNDER_MIXED_CONTENT, SMART_UNDER_CONTENT)
  # ___em,strong__ em_
  SMART_UNDER_EM_STRONG = \
      r'(?<!\w)(_{3})(?![\s_])%s(?<!\s)_{2}(?!\w)%s(?<!\s)_(?!\w)' % (SMART_UNDER_MIXED_CONTENT, SMART_UNDER_CONTENT)
  # __strong__
  SMART_UNDER_STRONG = r'(?<!\w)(_{2})(?![\s_])%s(?<!\s)\2(?!\w)' % SMART_UNDER_CONTENT
  # SMART _em_
  SMART_UNDER_EM = r'(?<!\w)(_)(?![\s_])%s(?<!\s)\2(?!\w)' % SMART_UNDER_CONTENT
  
  # Smart rules for when "smart asterisk" is enabled
  # SMART: ***strong,em***
  SMART_STAR_STRONG_EM = r'(?:(?<=_)|(?<![\w\*]))(\*{3})(?![\s\*])%s(?<!\s)\2(?:(?=_)|(?![\w\*]))' % SMART_STAR_CONTENT
  # ***strong,em* strong**
  SMART_STAR_STRONG_EM2 = \
      r'(?:(?<=_)|(?<![\w\*]))(\*{3})(?![\s\*])%s(?<!\s)\*(?:(?=_)|(?![\w\*]))%s(?<!\s)\*{2}(?:(?=_)|(?![\w\*]))' % (
          SMART_STAR_MIXED_CONTENT, SMART_STAR_CONTENT
      )
  # ***em,strong** em*
  SMART_STAR_EM_STRONG = \
      r'(?:(?<=_)|(?<![\w\*]))(\*{3})(?![\s\*])%s(?<!\s)\*{2}(?:(?=_)|(?![\w\*]))%s(?<!\s)\*(?:(?=_)|(?![\w\*]))' % (
          SMART_STAR_MIXED_CONTENT, SMART_STAR_CONTENT
      )
  # **strong**
  SMART_STAR_STRONG = r'(?:(?<=_)|(?<![\w\*]))(\*{2})(?![\s\*])%s(?<!\s)\2(?:(?=_)|(?![\w\*]))' % SMART_STAR_CONTENT
  # SMART *em*
  SMART_STAR_EM = r'(?:(?<=_)|(?<![\w\*]))(\*)(?![\s\*])%s(?<!\s)\2(?:(?=_)|(?![\w\*]))' % SMART_STAR_CONTENT
  
  
  class BetterEmExtension(Extension):
      """Add extension to Markdown class."""
  
      def __init__(self, *args, **kwargs):
          """Initialize."""
  
          self.config = {
              'smart_enable': ["underscore", "Treat connected words intelligently - Default: underscore"]
          }
  
          super(BetterEmExtension, self).__init__(*args, **kwargs)
  
      def extendMarkdown(self, md, md_globals):
          """Modify inline patterns."""
  
          # Not better yet, so let's make it better
          md.registerExtension(self)
          self.make_better(md)
  
      def make_better(self, md):
          """
          Configure all the pattern rules.
  
          This should be used instead of smart_strong package.
          pymdownx.extra should be used in place of makrdown.extensions.extra.
          """
  
          config = self.getConfigs()
          enabled = config["smart_enable"]
          if enabled:
              enable_all = enabled == "all"
              enable_under = enabled == "underscore" or enable_all
              enable_star = enabled == "asterisk" or enable_all
  
          star_strong_em = SMART_STAR_STRONG_EM if enable_star else STAR_STRONG_EM
          under_strong_em = SMART_UNDER_STRONG_EM if enable_under else UNDER_STRONG_EM
          star_em_strong = SMART_STAR_EM_STRONG if enable_star else STAR_EM_STRONG
          under_em_strong = SMART_UNDER_EM_STRONG if enable_under else UNDER_EM_STRONG
          star_strong_em2 = SMART_STAR_STRONG_EM2 if enable_star else STAR_STRONG_EM2
          under_strong_em2 = SMART_UNDER_STRONG_EM2 if enable_under else UNDER_STRONG_EM2
          star_strong = SMART_STAR_STRONG if enable_star else STAR_STRONG
          under_strong = SMART_UNDER_STRONG if enable_under else UNDER_STRONG
          star_emphasis = SMART_STAR_EM if enable_star else STAR_EM
          under_emphasis = SMART_UNDER_EM if enable_under else UNDER_EM
  
          md.inlinePatterns["strong_em"] = DoubleTagPattern(star_strong_em, 'strong,em')
          md.inlinePatterns.add("strong_em2", DoubleTagPattern(under_strong_em, 'strong,em'), '>strong_em')
          md.inlinePatterns.link("em_strong", ">strong_em2")
          md.inlinePatterns["em_strong"] = DoubleTagPattern(star_em_strong, 'em,strong')
          md.inlinePatterns.add('em_strong2', DoubleTagPattern(under_em_strong, 'em,strong'), '>em_strong')
          md.inlinePatterns.add('strong_em3', DoubleTagPattern(star_strong_em2, 'strong,em'), '>em_strong2')
          md.inlinePatterns.add('strong_em4', DoubleTagPattern(under_strong_em2, 'strong,em'), '>strong_em3')
          md.inlinePatterns["strong"] = SimpleTagPattern(star_strong, 'strong')
          md.inlinePatterns.add("strong2", SimpleTagPattern(under_strong, 'strong'), '>strong')
          md.inlinePatterns["emphasis"] = SimpleTagPattern(star_emphasis, 'em')
          md.inlinePatterns["emphasis2"] = SimpleTagPattern(under_emphasis, 'em')
  
  
  def makeExtension(*args, **kwargs):
      """Return extension."""
  
      return BetterEmExtension(*args, **kwargs)
  