[libcxx-commits] [libcxx] Make std::nullopt_t comparable (PR #195549)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions ,cpp -- libcxx/include/optional libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.pass.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/libcxx/include/optional b/libcxx/include/optional
index 424f5dd07..0f9262dc3 100644
--- a/libcxx/include/optional
+++ b/libcxx/include/optional
@@ -363,9 +363,9 @@ struct nullopt_t {
   };
   _LIBCPP_HIDE_FROM_ABI constexpr explicit nullopt_t(__secret_tag, __secret_tag) noexcept {}
   _LIBCPP_HIDE_FROM_ABI constexpr nullopt_t(const nullopt_t&) noexcept = default;
-#if _LIBCPP_STD_VER >= 26
+#    if _LIBCPP_STD_VER >= 26
   _LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const nullopt_t&) const noexcept = default;
-#endif
+#    endif
 };
 
 inline constexpr nullopt_t nullopt{nullopt_t::__secret_tag{}, nullopt_t::__secret_tag{}};
diff --git a/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.pass.cpp b/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.pass.cpp
index 7fd1bbb95..1a54941cd 100644
--- a/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.pass.cpp
+++ b/libcxx/test/std/utilities/optional/optional.nullopt/nullopt_t.pass.cpp
@@ -20,9 +20,9 @@
 #include <optional>
 #include <type_traits>
 #if _LIBCPP_STD_VER >= 26
-#include <vector>
-#include <ranges>
-#include <cassert>
+#  include <vector>
+#  include <ranges>
+#  include <cassert>
 #endif
 
 #include "test_macros.h"
@@ -54,10 +54,10 @@ int main(int, char**)
 
     // Test ranges::find with nullopt
     std::vector<std::optional<int>> v = {1, 2, nullopt, 4, 5};
-    auto itr = std::ranges::find(v, nullopt);
+    auto itr                          = std::ranges::find(v, nullopt);
     assert(itr != v.end());
     assert(*itr == nullopt);
 #endif
 
-  return 0;
+    return 0;
 }

``````````

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https://github.com/llvm/llvm-project/pull/195549