Rory McKinley has written a useful Gregarius plugin, Feed Filter Regular Expression.
Gregarius is a great little PHP application, simple to use, well-documented, and with a helpful, active community. It’s an RSS/RDF/ATOM feed aggregator. I use it to aggregate and export feeds, as well as create a page for myself containing all the feeds I’m interested in reading.
The plugin extends the original Feed Filter plugin, written by Gregarius developer Martey Dodoo, allowing you to use multiple criteria, AND/OR/NOT, and applying each criterion to either the description, title, or both.
All in all it does just what I want, which is not that surprising seeing as I helped spec it. Thanks Rory!
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