--- a/clang-tools-extra/clang-tidy/readability/StaticDefinitionInAnonymousNamespaceCheck.cpp	Wed Nov 09 17:47:54 2022 +0900
+++ b/clang-tools-extra/clang-tidy/readability/StaticDefinitionInAnonymousNamespaceCheck.cpp	Fri Aug 18 09:04:13 2023 +0900
@@ -13,13 +13,7 @@
 
 using namespace clang::ast_matchers;
 
-namespace clang {
-namespace tidy {
-namespace readability {
-
-AST_MATCHER(NamedDecl, isInAnonymousNamespace) {
-  return Node.isInAnonymousNamespace();
-}
+namespace clang::tidy::readability {
 
 void StaticDefinitionInAnonymousNamespaceCheck::registerMatchers(
     MatchFinder *Finder) {
@@ -64,6 +58,4 @@
   }
 }
 
-} // namespace readability
-} // namespace tidy
-} // namespace clang
+} // namespace clang::tidy::readability