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.  This [$link1 link] contains an explanation of the syntax and this [$link2 link] contains an actual grammar for the Regular Expression language. 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.