REPRODUCE WITH: ./gradlew ':rest-api-spec:yamlRestTest' --tests "org.elasticsearch.test.rest.ClientYamlTestSuiteIT" \
  -Dtests.method="test {yaml=cat.indices/20_hidden/Test cat indices output for dot-hidden index and dot-prefixed pattern}" \
  -Dtests.seed=A19AD8C02AD3D7B4 \
  -Dtests.locale=pl-PL \
  -Dtests.timezone=Asia/Singapore \
  -Druntime.java=17

REPRODUCE WITH: ./gradlew ':rest-api-spec:yamlRestTest' --tests "org.elasticsearch.test.rest.ClientYamlTestSuiteIT" \
  -Dtests.method="test {yaml=cat.indices/20_hidden/Test cat indices output for dot-hidden index and dot-prefixed pattern}" \
  -Dtests.seed=A19AD8C02AD3D7B4 \
  -Dtests.locale=pl-PL \
  -Dtests.timezone=Asia/Singapore \
  -Druntime.java=17

11:39:28         Caused by:
11:39:28         java.lang.AssertionError: field [$body] was expected to match the provided regex but didn't
11:39:28         Expected: ^(green  \s+
11:39:28            open   \s+
11:39:28            \.index1 \s+
11:39:28            ([a-zA-Z0-9=/_+]|[\\\-]){22} \s+
11:39:28            1      \s+
11:39:28            0      \s+
11:39:28            0      \s+
11:39:28            0      \s+
11:39:28            (\d+|\d+[.]\d+)(kb|b) \s+
11:39:28            (\d+|\d+[.]\d+)(kb|b) \s*
11:39:28          )
11:39:28          $
11:39:28              but: was "green open .index1 qxYUkTocRnqz27Ix1xgxVQ 1 0 0 0 225b 225b\ngreen open .tasks  HRmCS8fTRVqa0m1RBS486g 1 0 0 0 225b 225b\n"
11:39:28             at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:18)
11:39:28             at org.junit.Assert.assertThat(Assert.java:956)
11:39:28             at org.elasticsearch.test.rest.yaml.section.MatchAssertion.doAssert(MatchAssertion.java:64)
11:39:28             at org.elasticsearch.test.rest.yaml.section.Assertion.execute(Assertion.java:65)
11:39:28             at org.elasticsearch.test.rest.yaml.ESClientYamlSuiteTestCase.executeSection(ESClientYamlSuiteTestCase.java:478)
11:39:28             ... 38 more