+2022-11-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/std/format/functions/format.cc: Do not use
+ std::make_unsigned_t<__int128>.
+
+2022-11-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/format (formattable): Only define for C++23/
+ * testsuite/std/format/formatter.cc: Moved to...
+ * testsuite/std/format/formatter/requirements.cc: ...here.
+ * testsuite/std/format/formatter/concept.cc: New test.
+ * testsuite/std/format/functions/format.cc: Replace use of
+ std::formattable in C++20.
+
+2022-11-15 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/107693
+ * include/std/format (_GLIBCXX_FORMAT_F128): Define to 2 when
+ basic_format_arg needs to use its _M_f128 member.
+ (__extended_floating_point, __floating_point): Replace with ...
+ (__formattable_floating_point): New concept.
+ * testsuite/std/format/functions/format.cc: Check whether
+ __float128 is supported. Also test _Float128.
+
+2022-11-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/manual/documentation_hacking.xml: Document use of
+ Markdown for Doxygen comments. Tweak formatting.
+ * doc/html/manual/documentation_hacking.html: Regenerate.
+
2022-11-14 Jonathan Wakely <jwakely@redhat.com>
* python/Makefile.am (install-data-local): Use mkdirs_p for debug