[libcxx-commits] [libcxx] WIP: Implement std::ranges::view_interface<D>::cbegin/cend (PR #174690)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h -- libcxx/include/__ranges/view_interface.h --diff_from_common_commit
``````````

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``````````diff
diff --git a/libcxx/include/__ranges/view_interface.h b/libcxx/include/__ranges/view_interface.h
index 72040f733..8247f7c73 100644
--- a/libcxx/include/__ranges/view_interface.h
+++ b/libcxx/include/__ranges/view_interface.h
@@ -150,37 +150,37 @@ public:
     return *ranges::prev(ranges::end(__derived()));
   }
 
-#if _LIBCPP_STD_VER >= 23
+#  if _LIBCPP_STD_VER >= 23
 
   template <class _D2 = _Derived>
-  _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) cbegin() 
-    requires input_range<_D2> 
+  _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) cbegin()
+    requires input_range<_D2>
   {
     return *ranges::cbegin(__derived());
   }
 
   template <class _D2 = _Derived>
   _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) cbegin() const
-    requires input_range<const _D2> 
+    requires input_range<const _D2>
   {
     return *ranges::cbegin(__derived());
   }
 
   template <class _D2 = _Derived>
-  _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) cend() 
-    requires input_range<_D2> 
+  _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) cend()
+    requires input_range<_D2>
   {
     return *ranges::cend(__derived());
   }
 
   template <class _D2 = _Derived>
   _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) cend() const
-    requires input_range<const _D2> 
+    requires input_range<const _D2>
   {
     return *ranges::cend(__derived());
   }
 
-#endif // _LIBCPP_STD_VER >= 23
+#  endif // _LIBCPP_STD_VER >= 23
 
   template <random_access_range _RARange = _Derived>
   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr decltype(auto) operator[](range_difference_t<_RARange> __index) {

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https://github.com/llvm/llvm-project/pull/174690