The mantisLink code was originally checked in to fix url's containing a bracket from including the bracket in the URL.

As the class seems to have a number of issues, I'm checking in an improved regex which seems to work on 'test' collection of URLs that I've assembled here reasonably well. And at least for my testcases, scores higher then the new code.

Note: code in question is that in 1.59 of string_api.php

The following Issues prevent the new code from being useable imo:

1. The regex needs improving i.e. doesn't match localhost
2. Having it 'truncate' long url's is fine for a web app, but not a bugtracking app where you might want to illustrate say, an xss vuln in the message.
3. The main issue -> the fact that if you have multiple links to the same domain, depending on the sorting/order of those links, you get incorrect results e.g. http://www.microsoft.com/index.html could be displayed as <a>www.microsoft.com</a>index.html, if there is already a previous entry for www.microsoft.com.