<<.operator-example 4 "[regexp[(?i)\.jpe?g$]]" "tiddlers with titles ending in `.jpg` or `.jpeg`, ignoring case">>
<<.operator-example 5 "[regexp:created[^201408]]" "tiddlers created in August 2014">>
The regular expression `[0-9]{2}` matches two consecutive digits. Because it contains square brackets, the way to use it with the <<.op regexp>> operator is via a [[variable|Variables]], as follows: