I have to write scripts parsing html pages (e-shops product lists, actually), and get the product names, prices, links to photos, etc. Usually they have autogenerated pages, so basically page consists of repeating chunks like 
<table>
 <tr>
  <td>........</td>
 </tr>
</table>

[download]
that have a little differences inside - that differences are names, prices, photos, etc. Obviously, one have to change parsing repexp every time the page desing or markup changes. HTML stripping technique doesn't always help, because I have to have image urls and other html information on products. The best solution would be an algorithm that could find repeating chunks and return the differences they have - that's the actual data I'm digging for. For example, if there is 20 products on a page, there's 20 similar chunks of code, and their differences are my data. Maybe there's such CPAN module or smth. Thanks!

In reply to Search for repeating but slightly different patterns by Sly_G

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