Authentication sub-topics are covered by section header

gistfile1.txt

The Authentication <li><a which toc.phtml looks for is split across lines and
not found by the non-css preg selector.  

This section of TOC.md 

Authentication and Authorization
--------------------------------

- [Introduction](/auth/intro.md)
- [Authentication](/auth/authentication.md)
    - [HTTP Basic Auth](/auth/authentication-http-basic.md)
    - [HTTP Digest Auth](/auth/authentication-http-digest.md)
    - [OAuth2](/auth/authentication-oauth2.md)
- [Authorization](/auth/authorization.md)
- [Advanced Auth Events and Services](/auth/advanced.md)

should be

Authentication and Authorization
--------------------------------

- [Introduction](/auth/intro.md)
- [Authentication](/auth/authentication.md)
- [HTTP Basic Auth](/auth/authentication-http-basic.md)
- [HTTP Digest Auth](/auth/authentication-http-digest.md)
- [OAuth2](/auth/authentication-oauth2.md)
- [Authorization](/auth/authorization.md)
- [Advanced Auth Events and Services](/auth/advanced.md)

Nowhere else in the TOC is there a second level and this interfers with 
a more correct method of selecting the current page

<script>
Zepto(function($) {
    $('a[href="<?= $current; ?>"]').parent('li').addClass('current').parents('ul').show();
});
</script>

This Zepto function works find in all cases except the second level 
because when their parent is selected and the 'current' class is 
added to it's li element the html > pointer style is duplicated across the second level.