code: def clean_text(value, topic=False):
      
      for x in PROFANITY_REPLACEMENTS:
          value = value.replace(x[0], x[1])
  
      for bbset in BBCODE_REPLACEMENTS:
          p = re.compile(bbset[0], re.DOTALL)
          value = p.sub(bbset[1], value)
  
      bleached = bleach.clean(value, tags=ALLOWED_TAGS, attributes=ALLOWED_ATTRIBUTES, strip=True)
  
      # We want to retain markdown quotes and we'll be running bleach again in format_post.
      bleached = bleached.replace('&gt;', '>').replace('&amp;', '&')
      return bleached
docs: Replaces "profane" words with more suitable ones.
      Uses bleach to strip all but whitelisted html.
      Converts bbcode to Markdown