-testfileset('replace string', "1$/2$/3$/", [4, 1], 2, "2$/3$/4$/");
-testfileset('replace all', $BASICBODY, ['', qr/^re/], 3, "noremove$/.$/$/");
-testfileset('keep first', "foo$/bar$/foo$/", ['foo'], 1, "foo$/bar$/");
+testfileset('keep first', "foo$/FOO$/foo$/", ['foo'], 1, "foo$/FOO$/");
+testfileset('replace string', "$/0$/1$/2$/", [3, 0], 2, "$/1$/2$/3$/");
+testfileset('keep regex', "foo$/hi$/$/", ['hi', qr/./], 1, "hi$/$/");