[libc++] Mark P2845R8 `__cpp_lib_format_path` and P2587R3 `__cpp_lib_to_string` as C++26 (#93255)
[P2845R8](https://wg21.link/P2845R8) "Formatting of
`std::filesystem::path`" and [P2587R3](https://wg21.link/P2587R3)
"`to_string` or not `to_string`" are C++26 features, so they should be
marked accordingly in `generate_feature_test_macro_components.py`.
I verified that without my changes, running the script produced no
edits. Then with my changes, I ran the script to regenerate all files,
with no other manual edits.
Found while running libc++'s tests with MSVC's STL, which noticed this
because it's currently a C++23-only implementation.
Note that @H-G-Hristov has a draft implementation of P2587R3: #78100
diff --git a/libcxx/docs/FeatureTestMacroTable.rst b/libcxx/docs/FeatureTestMacroTable.rst
index 17d2da9..0297068 100644
--- a/libcxx/docs/FeatureTestMacroTable.rst
+++ b/libcxx/docs/FeatureTestMacroTable.rst
@@ -326,8 +326,6 @@
---------------------------------------------------------- -----------------
``__cpp_lib_expected`` ``202211L``
---------------------------------------------------------- -----------------
- ``__cpp_lib_format_path`` *unimplemented*
- ---------------------------------------------------------- -----------------
``__cpp_lib_format_ranges`` ``202207L``
---------------------------------------------------------- -----------------
``__cpp_lib_formatters`` *unimplemented*
@@ -386,8 +384,6 @@
---------------------------------------------------------- -----------------
``__cpp_lib_string_resize_and_overwrite`` ``202110L``
---------------------------------------------------------- -----------------
- ``__cpp_lib_to_string`` *unimplemented*
- ---------------------------------------------------------- -----------------
``__cpp_lib_to_underlying`` ``202102L``
---------------------------------------------------------- -----------------
``__cpp_lib_tuple_like`` *unimplemented*
@@ -412,6 +408,8 @@
---------------------------------------------------------- -----------------
``__cpp_lib_default_template_type_for_algorithm_values`` *unimplemented*
---------------------------------------------------------- -----------------
+ ``__cpp_lib_format_path`` *unimplemented*
+ ---------------------------------------------------------- -----------------
``__cpp_lib_freestanding_algorithm`` *unimplemented*
---------------------------------------------------------- -----------------
``__cpp_lib_freestanding_array`` *unimplemented*
@@ -466,6 +464,8 @@
---------------------------------------------------------- -----------------
``__cpp_lib_to_chars`` *unimplemented*
---------------------------------------------------------- -----------------
+ ``__cpp_lib_to_string`` *unimplemented*
+ ---------------------------------------------------------- -----------------
``__cpp_lib_tuple_like`` *unimplemented*
========================================================== =================
