These examples make use of the Days of the Week tiddler.
[!is[system]regexp[Wiki]]
Wiki in their title[!is[system]regexp[(?i)Wiki]]
Wiki in their title, ignoring case[!is[system]regexp[Wiki(?i)]]
[regexp[(?i)\.jpe?g$]]
.jpg or .jpeg, ignoring case[regexp:created[^201408]]
The regular expression [0-9]{2} matches two consecutive digits. Because it contains square brackets, the way to use it with the regexp operator is via a variable, as follows:
<$set name="digit-pattern" value="[0-9]{2}">
<<list-links "[regexp:title<digit-pattern>]">>
</$set>That renders as:
