How to use the markdown.util.AtomicString function in Markdown

def shorten_diff(self, link, class_name, label, user_repo, value, hash_size):
        """Shorten diff/compare links."""

        repo_label = self.repo_labels.get('compare', 'Compare')
        if self.my_repo:
            text = '%s...%s' % (value[0][0:hash_size], value[1][0:hash_size])
        elif self.my_user:
            text = '%s@%s...%s' % (user_repo.split('/')[1], value[0][0:hash_size], value[1][0:hash_size])
        else:
            text = '%s@%s...%s' % (user_repo, value[0][0:hash_size], value[1][0:hash_size])
        link.text = md_util.AtomicString(text)

        if 'magiclink-compare' not in class_name:
            class_name.append('magiclink-compare')

        link.set(
            'title',
            '%s %s: %s@%s...%s' % (
                label, repo_label, user_repo.rstrip('/'), value[0][0:hash_size], value[1][0:hash_size]
            )

linkText(node)
                        strartIndex = phEndIndex
                        continue

                    strartIndex = phEndIndex
                    result.append(node)

                else: # wrong placeholder
                    end = index + len(self.__placeholder_prefix)
                    linkText(data[strartIndex:end])
                    strartIndex = end
            else:
                text = data[strartIndex:]
                if isinstance(data, util.AtomicString):
                    # We don't want to loose the AtomicString
                    text = util.AtomicString(text)
                linkText(text)
                data = ""

        return result

def handleMatch(self, m, data=None):
		el = markdown.util.etree.Element("a")
		try:
			el.set('href', self.url(m.group('id')))
			el.text = markdown.util.AtomicString(m.group('title'))
		except ObjectDoesNotExist:
			el.text = markdown.util.AtomicString(_('[missing link]'))
		__, index, __ = self.getText(data, m.end(0))
		__, __, index, __ = self.getLink(data, index)
		return el, m.start(0), index

def handleMatch(self, m):
        node = markdown.util.etree.Element('mathjax')
        node.text = markdown.util.AtomicString(m.group(2) + m.group(3) + m.group(2))
        return node

def handleMatch(self, m):
        supr = m.group(3)
        
        text = supr
        
        el = markdown.util.etree.Element("sup")
        el.text = markdown.util.AtomicString(text)
        return el

def handleMatch(self, m, data):
        """Handle email link patterns."""

        el = etree.Element("a")
        email = self.unescape(m.group('mail'))
        href = "mailto:%s" % email
        el.text = md_util.AtomicString(''.join([self.email_encode(ord(c)) for c in email]))
        el.set("href", ''.join([md_util.AMP_SUBSTITUTE + '#%d;' % ord(c) for c in href]))
        return el, m.start(0), m.end(0)

def handle_match(m):
            node = etree.Element('script')
            node.set('type', '%s; mode=display' % self._get_content_type())
            if '\\begin' in m.group(2):
                node.text = AtomicString(''.join(m.group(2, 4, 5)))
                return _wrap_node(node, ''.join(m.group(1, 2, 4, 5, 6)), 'div')
            else:
                node.text = AtomicString(m.group(3))
                return _wrap_node(node, ''.join(m.group(2, 3, 4)), 'div')

def handleMatch(self, m):
        username = self.unescape(m.group(2))

        """Makesure `username` is registered and actived."""
        if MARTOR_ENABLE_CONFIGS['mention'] == 'true':
            if username in [u.username for u in User.objects.exclude(is_active=False)]:
                url = '{0}{1}/'.format(MARTOR_MARKDOWN_BASE_MENTION_URL, username)
                el = markdown.util.etree.Element('a')
                el.set('href', url)
                el.set('class', 'direct-mention-link')
                el.text = markdown.util.AtomicString('@' + username)
                return el

def handleMatch(self, m):
        subsc = m.group(3)

        text = subsc

        el = markdown.util.etree.Element("sub")
        el.text = markdown.util.AtomicString(text)
        return el

def handleMatch(self, m):
        el = util.etree.Element('a')
        email = self.unescape(m.group(2))
        if email.startswith("mailto:"):
            email = email[len("mailto:"):]

        def codepoint2name(code):
            """Return entity definition by code, or the code if not defined."""
            entity = entities.codepoint2name.get(code)
            if entity:
                return "%s%s;" % (util.AMP_SUBSTITUTE, entity)
            else:
                return "%s#%d;" % (util.AMP_SUBSTITUTE, code)

        letters = [codepoint2name(ord(letter)) for letter in email]
        el.text = util.AtomicString(''.join(letters))

        mailto = "mailto:" + email
        mailto = "".join([util.AMP_SUBSTITUTE + '#%d;' %
                          ord(letter) for letter in mailto])
        el.set('href', mailto)
        return el