inc/special/regex.php
Used by Special:Regex.
Console to make searches with regex syntax. Regex uses also swFilter, so you may have to search several times to get all the results. It also cannot profit from bloom acceleration.
The console allows you also to replace automatically text in multiple pages. To prevent a timeout, changes are however limited to 50 pages at a time.
A checkbox allows to search in names instead of content.
Found records can be exported to a zip-file into the /bak folder.