fmt-12.0.0

[Bruce Dubbs]

New major version.

[Bruce Dubbs]

12.0.0 - 2025-09-17

• Optimized the default floating point formatting
• Added constexpr support to fmt::format.
• Added FMT_STATIC_FORMAT that allows formatting into a string of the exact required size at compile time.
• Improved C++20 module support
• Switched to using estimated display width in precision.
• Fix interaction between debug presentation, precision, and width for strings
• Implemented allocator propagation on basic_memory_buffer move
• Fixed an ambiguity between std::reference_wrapper<T> and format_as formatters
• Removed the following deprecated APIs:
  • has_formatter: use is_formattable instead,
  • basic_format_args::parse_context_type, basic_format_args::formatter_type and similar aliases in context types,
  • wide stream overload of fmt::printf,
  • wide stream overloads of fmt::print that take text styles,
  • is_*char traits,
  • fmt::localtime.
• Deprecated wide overloads of fmt::fprintf and fmt::sprintf.
• Improved diagnostics for the incorrect usage of fmt::ptr
• Made handling of ANSI escape sequences more efficient
• Fixed a buffer overflow on all emphasis flags set
• Fixed an integer overflow for precision close to the max int value.
• Fixed compatibility with WASI
• Fixed back_insert_iterator detection, preventing a fallback on slower path that handles arbitrary iterators
• Fixed handling of invalid glibc FILE buffers
• Added wchar_t support to the std::byte formatter
• Changed component prefix from fmt- to fmt_ for compatibility with NSIS/CPack on Windows, e.g. fmt-doc changed to `fmt_doc
• Added the FMT_CUSTOM_ASSERT_FAIL macro to simplify providing a custom fmt::assert_fail implementation
• Switched to FMT_THROW on reporting format errors so that it can be overriden by users when exceptions are disabled
• Improved master project detection and disabled install targets when using {fmt} as a subproject by default
• Made various code improvements
• Added Conan instructions to the docs
• Removed Bazel files to avoid issues with downstream packaging
• Added more entries for generated files to .gitignore
• Fixed various warnings and compilation issues

[Bruce Dubbs]

Fixed at commits

ae758ceb96 Update to ruby-3.4.6.
49eaeb2ad9 Update to fmt-12.0.0.
a0341274a6 Update to pavucontrol-6.2.
83c37eae39 Update to gtkmm-4.20.0.

[Bruce Dubbs]

Milestone renamed