If you are open to non-Perl solutions, I will recommend Unix cut and sort commands. They are very easy to use.
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<code> <a> <b> <big>
<blockquote> <br /> <dd>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
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horizontal scrolling (and possible janitor
Want more info? How to link
or How to display code and escape characters
are good places to start.