Oh hai. So I finally took the time to push the updates that were done two months ago online. This should cover quite a few of the feature requests so far. The news:
Size filter tag:
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It's now possible to filter on image size, using size tag.
Examples searches:
Resolutions:
http://anisearch.net/?q=claymore+-size%3Asmall
Advanced search:
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It's now possible to negate search terms. Adding -uniform to the search "school", will remove all images with the tag "school uniform".
Test: http://anisearch.net/?q=school+-uniform
Support for OR queries. Searching for "toradora ~mittens" will return all images tagged with mittens, even though they're not tagged with toradora.
http://anisearch.net/?q=toradora+~mittens
Query expansion / Aliased searches:
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Searches are now expanded using alias list. Searching "neko mimi" will now also give you results for "cat ears". Internally this is converted to "(neko OR cat) AND (mimi OR ear)".
http://anisearch.net/?q=neko+mimi
I think that's all, i forget. Bug reports/comments are welcome. :3