use placeholders for external links

[GoogleCodeExporter]

What steps will reproduce the problem?
1. render:
[http://www.google.com]

[http://www.google.de]

What is the expected output? What do you see instead?
expected (MediaWiki):
<p><a rel="nofollow" class="external autonumber" 
href="http://www.google.com">[1]</a></p>
<p><a rel="nofollow" class="external autonumber" 
href="http://www.google.de">[2]</a></p>

actual:
<p><a class="externallink" href="http://www.google.com" rel="nofollow" 
title="http://www.google.com"></a><a class="externallink" 
href="http://www.google.com" rel="nofollow" 
title="http://www.google.com">http://www.google.com</a>
</p>
<p><a class="externallink" href="http://www.google.de" rel="nofollow" 
title="http://www.google.de"></a><a class="externallink" 
href="http://www.google.de" rel="nofollow" 
title="http://www.google.de">http://www.google.de</a>
</p>

What version of the product are you using? On what operating system?
3.0.18-SNAPSHOT

Please provide any additional information below.
the duplication of the <a> tags is actually part of issue 90, but the text of 
the link should probably also be a placeholder with a number by default.

Original issue reported on code.google.com by nico.kru...@googlemail.com on 10 May 2012 at 9:47

[GoogleCodeExporter]

Original comment by axelclk@gmail.com on 11 May 2012 at 3:14

• Changed state: Accepted

[GoogleCodeExporter]

Commited r5180

Original comment by axelclk@gmail.com on 15 May 2012 at 5:36

• Changed state: Started

[GoogleCodeExporter]

Original comment by axelclk@gmail.com on 3 Jul 2012 at 5:33

• Changed state: Fixed
• Added labels: Mediawiki2HTML