You can define a custom comparator in the plugins.properties file. This is now done by providing a configuration to the SetUp constructor.

script
given page	TestPage	with content	!path lib/*.jar !define TEST_SYSTEM {slim} | scenario | test in scenario | | check | echo | test | glob:t*t | !| script | fitnesse.fixtures.EchoFixture | | check | echo | test | glob:t*t | | test in scenario |
test results for page	TestPage	should contain	t*t matches test
ensure	content contains	2 right, 0 wrong, 0 ignored, 0 exceptions