Translations:Help:CirrusSearch/60/en


 * and
 * These run Regular expressions against the page source. They aren't efficient and we only allow a few of them to run at a time on the search cluster but they are very powerful. See the [$link1 explanation of the syntax] and the [$link2 Lucene grammar for regular expressions]. The version with the extra  runs the expression case insensitive and is even less efficient. Note that if the regexp contains whitespace, you must either escape each space character (\ ) or put everything after   in quotes (insource:"/foo bar/").
 * Tip: These return much much faster if there are other filters. Instead of searching for  search for.