Bug: can only use replacement pattern once

[Duncan Smart]

Had a bunch of URLs that I wanted to generate <a href="zzz">zzz<a>
tags from, but this pattern:

<a href="$1">$1</a>

resulted in:

<a href="http://www.example.com/abc">$1</a>
<a href="http://www.example.com/def">$1</a>
etc...

Expected result:
<a href="http://www.example.com/abc">http://www.example.com/abc</a>
<a href="http://www.example.com/def">http://www.example.com/def</a>

[secretGeek]

Doh!

Fixed now Duncan.

Updated the article too.