old_contents: from pelican import signals
  from .mdx_liquid_tags import LiquidTags, LT_CONFIG
  
  
  def addLiquidTags(gen):
      if not gen.settings.get('MD_EXTENSIONS'):
          from pelican.settings import DEFAULT_CONFIG
          gen.settings['MD_EXTENSIONS'] = DEFAULT_CONFIG['MD_EXTENSIONS']
  
      if LiquidTags not in gen.settings['MD_EXTENSIONS']:
          configs = dict()
          for key,value in LT_CONFIG.items():
              configs[key]=value
          for key,value in gen.settings.items():
              if key in LT_CONFIG:
                  configs[key]=value
          gen.settings['MD_EXTENSIONS'].append(LiquidTags(configs))
  
  
  def register():
      signals.initialized.connect(addLiquidTags)
  
new_contents: from pelican import signals
  from .mdx_liquid_tags import LiquidTags, LT_CONFIG
  
  
  def addLiquidTags(gen):
      if not gen.settings.get('MARKDOWN'):
          from pelican.settings import DEFAULT_CONFIG
          gen.settings['MARKDOWN'] = DEFAULT_CONFIG['MARKDOWN']
  
      if LiquidTags not in gen.settings['MARKDOWN']:
          configs = dict()
          for key,value in LT_CONFIG.items():
              configs[key]=value
          for key,value in gen.settings.items():
              if key in LT_CONFIG:
                  configs[key]=value
          gen.settings['MARKDOWN'].setdefault(
              'extensions', []
          ).append(
              LiquidTags(configs)
          )
  
  
  
  def register():
      signals.initialized.connect(addLiquidTags)
  
subject: Update to new markdown settings