Improvements

• Introduced CATCH_CONFIG_PREFIX_MESSAGES to prefix only logging macros (#2544)
  • This means INFO, UNSCOPED_INFO, WARN and CAPTURE.
• Section hints in static analysis mode are now const
  • This prevents Clang-Tidy from complaining about misc-const-correctness.
• from_range generator supports C arrays and ranges that require ADL (#2737)
• Stringification support for std::optional now also includes std::nullopt (#2740)
• The Console reporter flushes output after writing benchmark runtime estimate.
  • This means that you can immediately see for how long the benchmark is expected to run.
• Added workaround to enable compilation with ICC 19.1 (#2551, #2766)
• Compiling Catch2 for XBox should work out of the box (#2772)
  • Catch2 should automatically disable getenv when compiled for XBox.
• Compiling Catch2 with exceptions disabled no longer triggers Wunused-function (#2726)
• random Generators for integral types are now reproducible across different platforms
  • Unlike <random>, Catch2's generators also support 1 byte integral types (char, bool, ...)
• random Generators for float and double are now reproducible across different platforms
  • long double varies across different platforms too much to be reproducible
  • This guarantee applies only to platforms with IEEE 754 floats.

Fixes

• UDL declaration inside Catch2 are now strictly conforming to the standard
  • operator "" _a is UB, operator ""_a is fine. Seriously.
• Fixed CAPTURE tests failing to compile in C++23 mode (#2744)
• Fixed missing include in catch_message.hpp (#2758)
• Fixed CHECK_ELSE suppressing failure from uncaught exceptions(#2723)

Miscellaneous

• The documentation for specifying which tests to run through commandline has been completely rewritten (#2738)
• Fixed installation when building Catch2 with meson (#2722, #2742)
• Fixed catch_discover_tests when using custom reporter and PRE_TEST discovery mode (#2747)
• catch_discover_tests supports multi-config CMake generator in PRE_TEST discovery mode (#2739, #2746)