Last modified: 2013-04-08 11:02:50 UTC
1. Navigate to [[Special:Search]]
2. Type in "#foo" into the search bar.
3. Hit return.
4. "There is a page named "[[:]]" on this wiki." -- square brackets visible, and a broken link
This only occurs when on [[Special:Search]], and not from the "go" search bar. This message should be either suppressed completely, or perhaps go to the bad title error.
fixed in r87809.
This appears to have been a generic issue with mediawiki search, and not lucene specific, so refiling accordingly