Request from Docs: we would like to be able to search things on the wiki with keywords less than four characters long. Currently this is not supported.

From http://www.mediawiki.org/wiki/Manual:FAQ#.E2.80.A6is_a_search_for_a_short_keyword_giving_no_hits.3F:

By default, Media``Wiki uses MyISAM's fulltext matching functionality to allow searching page content. The default settings for this mean that words of less than four characters won't be indexed, so results won't be returned for those queries.

To alter this behaviour, MySQL needs to be reconfigured to index shorter terms, and Media``Wiki's search index table needs to be repaired, to rebuild the indices.

• For help on reconfiguring MySQL, see http://dev.mysql.com/doc/refman/4.1/en/fulltext-fine-tuning.html
• To repair the search index table, run the query REPAIR TABLE searchindex QUICK; against your database