blame: source/misc/embedded_libs/fmt-11.0.2/ChangeLog.md

# 11.0.2 - 2024-07-20

- Fixed compatibility with non-POSIX systems

  (https://github.com/fmtlib/fmt/issues/4054,

  https://github.com/fmtlib/fmt/issues/4060).

- Fixed performance regressions when using `std::back_insert_iterator` with

  `fmt::format_to` (https://github.com/fmtlib/fmt/issues/4070).

- Fixed handling of `std::generator` and move-only iterators

  (https://github.com/fmtlib/fmt/issues/4053,

  https://github.com/fmtlib/fmt/pull/4057). Thanks @Arghnews.

- Made `formatter<std::string_view>::parse` work with types convertible to

  `std::string_view` (https://github.com/fmtlib/fmt/issues/4036,

  https://github.com/fmtlib/fmt/pull/4055). Thanks @Arghnews.

- Made `volatile void*` formattable

  (https://github.com/fmtlib/fmt/issues/4049,

  https://github.com/fmtlib/fmt/pull/4056). Thanks @Arghnews.

- Made `Glib::ustring` not be confused with `std::string`

  (https://github.com/fmtlib/fmt/issues/4052).

- Made `fmt::context` iterator compatible with STL algorithms that rely on

  iterator category (https://github.com/fmtlib/fmt/issues/4079).

# 11.0.1 - 2024-07-05

- Fixed version number in the inline namespace

  (https://github.com/fmtlib/fmt/issues/4047).

- Fixed disabling Unicode support via CMake

  (https://github.com/fmtlib/fmt/issues/4051).

- Fixed deprecated `visit_format_arg` (https://github.com/fmtlib/fmt/pull/4043).

  Thanks @nebkat.

- Fixed handling of a sign and improved the `std::complex` formater

  (https://github.com/fmtlib/fmt/pull/4034,

  https://github.com/fmtlib/fmt/pull/4050). Thanks @tesch1 and @phprus.

- Fixed ADL issues in `fmt::printf` when using C++20

  (https://github.com/fmtlib/fmt/pull/4042). Thanks @toge.

- Removed a redundant check in the formatter for `std::expected`

  (https://github.com/fmtlib/fmt/pull/4040). Thanks @phprus.

# 11.0.0 - 2024-07-01

- Added `fmt/base.h` which provides a subset of the API with minimal include

  dependencies and enough functionality to replace all uses of the `printf`

  family of functions. This brings the compile time of code using {fmt} much

  closer to the equivalent `printf` code as shown on the following benchmark

  that compiles 100 source files:

  | Method       | Compile Time (s) |

  |--------------|------------------|

  | printf       | 1.6              |

  | IOStreams    | 25.9             |

  | fmt 10.x     | 19.0             |

  | fmt 11.0     | 4.8              |

  | tinyformat   | 29.1             |

  | Boost Format | 55.0             |

  This gives almost 4x improvement in build speed compared to version 10.

  Note that the benchmark is purely formatting code and includes. In real

  projects the difference from `printf` will be smaller partly because common

  standard headers will be included in almost any translation unit (TU) anyway.

  In particular, in every case except `printf` above ~1s is spent in total on

  including `<type_traits>` in all TUs.

- Optimized includes in other headers such as `fmt/format.h` which is now

  roughly equivalent to the old `fmt/core.h` in terms of build speed.

- Migrated the documentation at https://fmt.dev/ from Sphinx to MkDocs.

- Improved C++20 module support

  (https://github.com/fmtlib/fmt/issues/3990,

  https://github.com/fmtlib/fmt/pull/3991,

  https://github.com/fmtlib/fmt/issues/3993,

  https://github.com/fmtlib/fmt/pull/3994,

  https://github.com/fmtlib/fmt/pull/3997,

  https://github.com/fmtlib/fmt/pull/3998,

  https://github.com/fmtlib/fmt/pull/4004,

  https://github.com/fmtlib/fmt/pull/4005,

  https://github.com/fmtlib/fmt/pull/4006,

  https://github.com/fmtlib/fmt/pull/4013,

  https://github.com/fmtlib/fmt/pull/4027,

  https://github.com/fmtlib/fmt/pull/4029). In particular, native CMake support

  for modules is now used if available. Thanks @yujincheng08 and @matt77hias.

- Added an option to replace standard includes with `import std` enabled via

  the `FMT_IMPORT_STD` macro (https://github.com/fmtlib/fmt/issues/3921,

  https://github.com/fmtlib/fmt/pull/3928). Thanks @matt77hias.

- Exported `fmt::range_format`, `fmt::range_format_kind` and

  `fmt::compiled_string` from the `fmt` module

  (https://github.com/fmtlib/fmt/pull/3970,

  https://github.com/fmtlib/fmt/pull/3999).

  Thanks @matt77hias and @yujincheng08.

- Improved integration with stdio in `fmt::print`, enabling direct writes

  into a C stream buffer in common cases. This may give significant

  performance improvements ranging from tens of percent to [2x](

  https://stackoverflow.com/a/78457454/471164) and eliminates dynamic memory

  allocations on the buffer level. It is currently enabled for built-in and

  string types with wider availability coming up in future releases.

  For example, it gives ~24% improvement on a [simple benchmark](

  https://isocpp.org/files/papers/P3107R5.html#perf) compiled with Apple clang

  version 15.0.0 (clang-1500.1.0.2.5) and run on macOS 14.2.1:

  ```

  -------------------------------------------------------

  Benchmark             Time             CPU   Iterations

  -------------------------------------------------------

  printf             81.8 ns         81.5 ns      8496899

  fmt::print (10.x)  63.8 ns         61.9 ns     11524151

  fmt::print (11.0)  51.3 ns         51.0 ns     13846580

  ```

- Improved safety of `fmt::format_to` when writing to an array

  (https://github.com/fmtlib/fmt/pull/3805).

  For example ([godbolt](https://www.godbolt.org/z/cYrn8dWY8)):

  ```c++

  auto volkswagen = char[4];

  auto result = fmt::format_to(volkswagen, "elephant");

  ```

  no longer results in a buffer overflow. Instead the output will be truncated

  and you can get the end iterator and whether truncation occurred from the

  `result` object. Thanks @ThePhD.

- Enabled Unicode support by default in MSVC, bringing it on par with other

  compilers and making it unnecessary for users to enable it explicitly.

  Most of {fmt} is encoding-agnostic but this prevents mojibake in places

  where encoding matters such as path formatting and terminal output.

  You can control the Unicode support via the CMake `FMT_UNICODE` option.

  Note that some {fmt} packages such as the one in vcpkg have already been

  compiled with Unicode enabled.

- Added a formatter for `std::expected`

  (https://github.com/fmtlib/fmt/pull/3834). Thanks @dominicpoeschko.

- Added a formatter for `std::complex`

  (https://github.com/fmtlib/fmt/issues/1467,

  https://github.com/fmtlib/fmt/issues/3886,

  https://github.com/fmtlib/fmt/pull/3892,

  https://github.com/fmtlib/fmt/pull/3900). Thanks @phprus.

- Added a formatter for `std::type_info`

  (https://github.com/fmtlib/fmt/pull/3978). Thanks @matt77hias.

- Specialized `formatter` for `std::basic_string` types with custom traits

  and allocators (https://github.com/fmtlib/fmt/issues/3938,

  https://github.com/fmtlib/fmt/pull/3943). Thanks @dieram3.

- Added formatters for `std::chrono::day`, `std::chrono::month`,

  `std::chrono::year` and `std::chrono::year_month_day`

  (https://github.com/fmtlib/fmt/issues/3758,

  https://github.com/fmtlib/fmt/issues/3772,

  https://github.com/fmtlib/fmt/pull/3906,

  https://github.com/fmtlib/fmt/pull/3913). For example:

  ```c++

  #include <fmt/chrono.h>

  #include <fmt/color.h>

  int main() {

    fmt::print(fg(fmt::color::green), "{}\n", std::chrono::day(7));

  }

  ```

  prints a green day:

  <img width="306" alt="image" src="https://github.com/fmtlib/fmt/assets/576385/6e395f8b-451a-4cf7-bccc-ee92ca0dec65">

  Thanks @zivshek.

- Fixed handling of precision in `%S` (https://github.com/fmtlib/fmt/issues/3794,

  https://github.com/fmtlib/fmt/pull/3814). Thanks @js324.

- Added support for the `-` specifier (glibc `strftime` extension) to day of

  the month (`%d`) and week of the year (`%W`, `%U`, `%V`) specifiers

  (https://github.com/fmtlib/fmt/pull/3976). Thanks @ZaheenJ.

- Fixed the scope of the `-` extension in chrono formatting so that it doesn't

  apply to subsequent specifiers (https://github.com/fmtlib/fmt/issues/3811,

  https://github.com/fmtlib/fmt/pull/3812). Thanks @phprus.

- Improved handling of `time_point::min()`

  (https://github.com/fmtlib/fmt/issues/3282).

- Added support for character range formatting

  (https://github.com/fmtlib/fmt/issues/3857,

  https://github.com/fmtlib/fmt/pull/3863). Thanks @js324.

- Added `string` and `debug_string` range formatters

  (https://github.com/fmtlib/fmt/pull/3973,

  https://github.com/fmtlib/fmt/pull/4024). Thanks @matt77hias.

- Enabled ADL for `begin` and `end` in `fmt::join`

  (https://github.com/fmtlib/fmt/issues/3813,

  https://github.com/fmtlib/fmt/pull/3824). Thanks @bbolli.

- Made contiguous iterator optimizations apply to `std::basic_string` iterators

  (https://github.com/fmtlib/fmt/pull/3798). Thanks @phprus.

- Added support for ranges with mutable `begin` and `end`

  (https://github.com/fmtlib/fmt/issues/3752,

  https://github.com/fmtlib/fmt/pull/3800,

  https://github.com/fmtlib/fmt/pull/3955). Thanks @tcbrindle and @Arghnews.

- Added support for move-only iterators to `fmt::join`

  (https://github.com/fmtlib/fmt/issues/3802,

  https://github.com/fmtlib/fmt/pull/3946). Thanks @Arghnews.

- Moved range and iterator overloads of `fmt::join` to `fmt/ranges.h`, next

  to other overloads.

- Fixed handling of types with `begin` returning `void` such as Eigen matrices

  (https://github.com/fmtlib/fmt/issues/3839,

  https://github.com/fmtlib/fmt/pull/3964). Thanks @Arghnews.

- Added an `fmt::formattable` concept (https://github.com/fmtlib/fmt/pull/3974).

  Thanks @matt77hias.

- Added support for `__float128` (https://github.com/fmtlib/fmt/issues/3494).

- Fixed rounding issues when formatting `long double` with fixed precision

  (https://github.com/fmtlib/fmt/issues/3539).

- Made `fmt::isnan` not trigger floating-point exception for NaN values

  (https://github.com/fmtlib/fmt/issues/3948,

  https://github.com/fmtlib/fmt/pull/3951). Thanks @alexdewar.

- Removed dependency on `<memory>` for `std::allocator_traits` when possible

  (https://github.com/fmtlib/fmt/pull/3804). Thanks @phprus.

- Enabled compile-time checks in formatting functions that take text colors and

  styles.

- Deprecated wide stream overloads of `fmt::print` that take text styles.

- Made format string compilation work with clang 12 and later despite

  only partial non-type template parameter support

  (https://github.com/fmtlib/fmt/issues/4000,

  https://github.com/fmtlib/fmt/pull/4001). Thanks @yujincheng08.

- Made `fmt::iterator_buffer`'s move constructor `noexcept`

  (https://github.com/fmtlib/fmt/pull/3808). Thanks @waywardmonkeys.

- Started enforcing that `formatter::format` is const for compatibility

  with `std::format` (https://github.com/fmtlib/fmt/issues/3447).

- Added `fmt::basic_format_arg::visit` and deprecated `fmt::visit_format_arg`.

- Made `fmt::basic_string_view` not constructible from `nullptr` for

  consistency with `std::string_view` in C++23

  (https://github.com/fmtlib/fmt/pull/3846). Thanks @dalle.

- Fixed `fmt::group_digits` for negative integers

  (https://github.com/fmtlib/fmt/issues/3891,

  https://github.com/fmtlib/fmt/pull/3901). Thanks @phprus.

- Fixed handling of negative ids in `fmt::basic_format_args::get`

  (https://github.com/fmtlib/fmt/pull/3945). Thanks @marlenecota.

- Improved named argument validation

  (https://github.com/fmtlib/fmt/issues/3817).

- Disabled copy construction/assignment for `fmt::format_arg_store` and

  fixed moved construction (https://github.com/fmtlib/fmt/pull/3833).

  Thanks @ivafanas.

- Worked around a locale issue in RHEL/devtoolset

  (https://github.com/fmtlib/fmt/issues/3858,

  https://github.com/fmtlib/fmt/pull/3859). Thanks @g199209.

- Added RTTI detection for MSVC (https://github.com/fmtlib/fmt/pull/3821,

  https://github.com/fmtlib/fmt/pull/3963). Thanks @edo9300.

- Migrated the documentation from Sphinx to MkDocs.

- Improved documentation and README

  (https://github.com/fmtlib/fmt/issues/3775,

  https://github.com/fmtlib/fmt/pull/3784,

  https://github.com/fmtlib/fmt/issues/3788,

  https://github.com/fmtlib/fmt/pull/3789,

  https://github.com/fmtlib/fmt/pull/3793,

  https://github.com/fmtlib/fmt/issues/3818,

  https://github.com/fmtlib/fmt/pull/3820,

  https://github.com/fmtlib/fmt/pull/3822,

  https://github.com/fmtlib/fmt/pull/3843,

  https://github.com/fmtlib/fmt/pull/3890,

  https://github.com/fmtlib/fmt/issues/3894,

  https://github.com/fmtlib/fmt/pull/3895,

  https://github.com/fmtlib/fmt/pull/3905,

  https://github.com/fmtlib/fmt/issues/3942,

  https://github.com/fmtlib/fmt/pull/4008).

  Thanks @zencatalyst, WolleTD, @tupaschoal, @Dobiasd, @frank-weinberg, @bbolli,

  @phprus, @waywardmonkeys, @js324 and @tchaikov.

- Improved CI and tests

  (https://github.com/fmtlib/fmt/issues/3878,

  https://github.com/fmtlib/fmt/pull/3883,

  https://github.com/fmtlib/fmt/issues/3897,

  https://github.com/fmtlib/fmt/pull/3979,

  https://github.com/fmtlib/fmt/pull/3980,

  https://github.com/fmtlib/fmt/pull/3988,

  https://github.com/fmtlib/fmt/pull/4010,

  https://github.com/fmtlib/fmt/pull/4012,

  https://github.com/fmtlib/fmt/pull/4038).

  Thanks @vgorrX, @waywardmonkeys, @tchaikov and @phprus.

- Fixed buffer overflow when using format string compilation with debug format

  and `std::back_insert_iterator` (https://github.com/fmtlib/fmt/issues/3795,

  https://github.com/fmtlib/fmt/pull/3797). Thanks @phprus.

- Improved Bazel support

  (https://github.com/fmtlib/fmt/pull/3792,

  https://github.com/fmtlib/fmt/pull/3801,

  https://github.com/fmtlib/fmt/pull/3962,

  https://github.com/fmtlib/fmt/pull/3965). Thanks @Vertexwahn.

- Improved/fixed the CMake config

  (https://github.com/fmtlib/fmt/issues/3777,

  https://github.com/fmtlib/fmt/pull/3783,

  https://github.com/fmtlib/fmt/issues/3847,

  https://github.com/fmtlib/fmt/pull/3907). Thanks @phprus and @xTachyon.

- Fixed various warnings and compilation issues

  (https://github.com/fmtlib/fmt/issues/3685,

  https://github.com/fmtlib/fmt/issues/3769,

  https://github.com/fmtlib/fmt/issues/3796,

  https://github.com/fmtlib/fmt/issues/3803,

  https://github.com/fmtlib/fmt/pull/3806,

  https://github.com/fmtlib/fmt/pull/3807,

  https://github.com/fmtlib/fmt/issues/3809,

  https://github.com/fmtlib/fmt/pull/3810,

  https://github.com/fmtlib/fmt/issues/3830,

  https://github.com/fmtlib/fmt/pull/3832,

  https://github.com/fmtlib/fmt/issues/3835,

  https://github.com/fmtlib/fmt/pull/3844,

  https://github.com/fmtlib/fmt/issues/3854,

  https://github.com/fmtlib/fmt/pull/3856,

  https://github.com/fmtlib/fmt/pull/3865,

  https://github.com/fmtlib/fmt/pull/3866,

  https://github.com/fmtlib/fmt/pull/3880,

  https://github.com/fmtlib/fmt/issues/3881,

  https://github.com/fmtlib/fmt/issues/3884,

  https://github.com/fmtlib/fmt/issues/3898,

  https://github.com/fmtlib/fmt/pull/3899,

  https://github.com/fmtlib/fmt/pull/3909,

  https://github.com/fmtlib/fmt/pull/3917,

  https://github.com/fmtlib/fmt/pull/3923,

  https://github.com/fmtlib/fmt/pull/3924,

  https://github.com/fmtlib/fmt/issues/3925,

  https://github.com/fmtlib/fmt/pull/3930,

  https://github.com/fmtlib/fmt/pull/3931,

  https://github.com/fmtlib/fmt/pull/3933,

  https://github.com/fmtlib/fmt/issues/3935,

  https://github.com/fmtlib/fmt/pull/3937,

  https://github.com/fmtlib/fmt/pull/3967,

  https://github.com/fmtlib/fmt/pull/3968,

  https://github.com/fmtlib/fmt/pull/3972,

  https://github.com/fmtlib/fmt/pull/3983,

  https://github.com/fmtlib/fmt/issues/3992,

  https://github.com/fmtlib/fmt/pull/3995,

  https://github.com/fmtlib/fmt/pull/4009,

  https://github.com/fmtlib/fmt/pull/4023).

  Thanks @hmbj, @phprus, @res2k, @Baardi, @matt77hias, @waywardmonkeys, @hmbj,

  @yakra, @prlw1, @Arghnews, @mtillmann0, @ShifftC, @eepp, @jimmy-park and

  @ChristianGebhardt.

# 10.2.1 - 2024-01-04

- Fixed ABI compatibility with earlier 10.x versions

  (https://github.com/fmtlib/fmt/issues/3785,

  https://github.com/fmtlib/fmt/pull/3786). Thanks @saraedum.

# 10.2.0 - 2024-01-01

- Added support for the `%j` specifier (the number of days) for

  `std::chrono::duration` (https://github.com/fmtlib/fmt/issues/3643,

  https://github.com/fmtlib/fmt/pull/3732). Thanks @intelfx.

- Added support for the chrono suffix for days and changed

  the suffix for minutes from "m" to the correct "min"

  (https://github.com/fmtlib/fmt/issues/3662,

  https://github.com/fmtlib/fmt/pull/3664).

  For example ([godbolt](https://godbolt.org/z/9KhMnq9ba)):

  ```c++

  #include <fmt/chrono.h>

  int main() {

    fmt::print("{}\n", std::chrono::days(42)); // prints "42d"

  }

  ```

  Thanks @Richardk2n.

- Fixed an overflow in `std::chrono::time_point` formatting with large dates

  (https://github.com/fmtlib/fmt/issues/3725,

  https://github.com/fmtlib/fmt/pull/3727). Thanks @cschreib.

- Added a formatter for `std::source_location`

  (https://github.com/fmtlib/fmt/pull/3730).

  For example ([godbolt](https://godbolt.org/z/YajfKjhhr)):

  ```c++

  #include <source_location>

  #include <fmt/std.h>

  int main() {

    fmt::print("{}\n", std::source_location::current());

  }

  ```

  prints

  ```

  /app/example.cpp:5:51: int main()

  ```

  Thanks @felix642.

- Added a formatter for `std::bitset`

  (https://github.com/fmtlib/fmt/pull/3660).

  For example ([godbolt](https://godbolt.org/z/bdEaGeYxe)):

  ```c++

  #include <bitset>

  #include <fmt/std.h>

  int main() {

    fmt::print("{}\n", std::bitset<6>(42)); // prints "101010"

  }

  ```

  Thanks @muggenhor.

- Added an experimental `nested_formatter` that provides an easy way of

  applying a formatter to one or more subobjects while automatically handling

  width, fill and alignment. For example:

  ```c++

  #include <fmt/format.h>

  struct point {

    double x, y;

  };

  template <>

  struct fmt::formatter<point> : nested_formatter<double> {

    auto format(point p, format_context& ctx) const {

      return write_padded(ctx, [=](auto out) {

        return format_to(out, "({}, {})", nested(p.x), nested(p.y));

      });

    }

  };

  int main() {

    fmt::print("[{:>20.2f}]", point{1, 2});

  }

  ```

  prints

  ```

  [          (1.00, 2.00)]

  ```

- Added the generic representation (`g`) to `std::filesystem::path`

  (https://github.com/fmtlib/fmt/issues/3715,

  https://github.com/fmtlib/fmt/pull/3729). For example:

  ```c++

  #include <filesystem>

  #include <fmt/std.h>

  int main() {

    fmt::print("{:g}\n", std::filesystem::path("C:\\foo"));

  }

  ```

  prints `"C:/foo"` on Windows.

  Thanks @js324.

- Made `format_as` work with references

  (https://github.com/fmtlib/fmt/pull/3739). Thanks @tchaikov.

- Fixed formatting of invalid UTF-8 with precision

  (https://github.com/fmtlib/fmt/issues/3284).

- Fixed an inconsistency between `fmt::to_string` and `fmt::format`

  (https://github.com/fmtlib/fmt/issues/3684).

- Disallowed unsafe uses of `fmt::styled`

  (https://github.com/fmtlib/fmt/issues/3625):

  ```c++

  auto s = fmt::styled(std::string("dangle"), fmt::emphasis::bold);

  fmt::print("{}\n", s); // compile error

  ```

  Pass `fmt::styled(...)` as a parameter instead.

- Added a null check when formatting a C string with the `s` specifier

  (https://github.com/fmtlib/fmt/issues/3706).

- Disallowed the `c` specifier for `bool`

  (https://github.com/fmtlib/fmt/issues/3726,

  https://github.com/fmtlib/fmt/pull/3734). Thanks @js324.

- Made the default formatting unlocalized in `fmt::ostream_formatter` for

  consistency with the rest of the library

  (https://github.com/fmtlib/fmt/issues/3460).

- Fixed localized formatting in bases other than decimal

  (https://github.com/fmtlib/fmt/issues/3693,

  https://github.com/fmtlib/fmt/pull/3750). Thanks @js324.

- Fixed a performance regression in experimental `fmt::ostream::print`

  (https://github.com/fmtlib/fmt/issues/3674).

- Added synchronization with the underlying output stream when writing to

  the Windows console

  (https://github.com/fmtlib/fmt/pull/3668,

  https://github.com/fmtlib/fmt/issues/3688,

  https://github.com/fmtlib/fmt/pull/3689).

  Thanks @Roman-Koshelev and @dimztimz.

- Changed to only export `format_error` when {fmt} is built as a shared

  library (https://github.com/fmtlib/fmt/issues/3626,

  https://github.com/fmtlib/fmt/pull/3627). Thanks @phprus.

- Made `fmt::streamed` `constexpr`.

  (https://github.com/fmtlib/fmt/pull/3650). Thanks @muggenhor.

- Made `fmt::format_int` `constexpr`

  (https://github.com/fmtlib/fmt/issues/4031,

  https://github.com/fmtlib/fmt/pull/4032). Thanks @dixlorenz.

- Enabled `consteval` on older versions of MSVC

  (https://github.com/fmtlib/fmt/pull/3757). Thanks @phprus.

- Added an option to build without `wchar_t` support on Windows

  (https://github.com/fmtlib/fmt/issues/3631,

  https://github.com/fmtlib/fmt/pull/3636). Thanks @glebm.

- Improved build and CI configuration

  (https://github.com/fmtlib/fmt/pull/3679,

  https://github.com/fmtlib/fmt/issues/3701,

  https://github.com/fmtlib/fmt/pull/3702,

  https://github.com/fmtlib/fmt/pull/3749).

  Thanks @jcar87, @pklima and @tchaikov.

- Fixed various warnings, compilation and test issues

  (https://github.com/fmtlib/fmt/issues/3607,

  https://github.com/fmtlib/fmt/pull/3610,

  https://github.com/fmtlib/fmt/pull/3624,

  https://github.com/fmtlib/fmt/pull/3630,

  https://github.com/fmtlib/fmt/pull/3634,

  https://github.com/fmtlib/fmt/pull/3638,

  https://github.com/fmtlib/fmt/issues/3645,

  https://github.com/fmtlib/fmt/issues/3646,

  https://github.com/fmtlib/fmt/pull/3647,

  https://github.com/fmtlib/fmt/pull/3652,

  https://github.com/fmtlib/fmt/issues/3654,

  https://github.com/fmtlib/fmt/pull/3663,

  https://github.com/fmtlib/fmt/issues/3670,

  https://github.com/fmtlib/fmt/pull/3680,

  https://github.com/fmtlib/fmt/issues/3694,

  https://github.com/fmtlib/fmt/pull/3695,

  https://github.com/fmtlib/fmt/pull/3699,

  https://github.com/fmtlib/fmt/issues/3705,

  https://github.com/fmtlib/fmt/issues/3710,

  https://github.com/fmtlib/fmt/issues/3712,

  https://github.com/fmtlib/fmt/pull/3713,

  https://github.com/fmtlib/fmt/issues/3714,

  https://github.com/fmtlib/fmt/pull/3716,

  https://github.com/fmtlib/fmt/pull/3723,

  https://github.com/fmtlib/fmt/issues/3738,

  https://github.com/fmtlib/fmt/issues/3740,

  https://github.com/fmtlib/fmt/pull/3741,

  https://github.com/fmtlib/fmt/pull/3743,

  https://github.com/fmtlib/fmt/issues/3745,

  https://github.com/fmtlib/fmt/pull/3747,

  https://github.com/fmtlib/fmt/pull/3748,

  https://github.com/fmtlib/fmt/pull/3751,

  https://github.com/fmtlib/fmt/pull/3754,

  https://github.com/fmtlib/fmt/pull/3755,

  https://github.com/fmtlib/fmt/issues/3760,

  https://github.com/fmtlib/fmt/pull/3762,

  https://github.com/fmtlib/fmt/issues/3763,

  https://github.com/fmtlib/fmt/pull/3764,

  https://github.com/fmtlib/fmt/issues/3774,

  https://github.com/fmtlib/fmt/pull/3779).

  Thanks @danakj, @vinayyadav3016, @cyyever, @phprus, @qimiko, @saschasc,

  @gsjaardema, @lazka, @Zhaojun-Liu, @carlsmedstad, @hotwatermorning,

  @cptFracassa, @kuguma, @PeterJohnson, @H1X4Dev, @asantoni, @eltociear,

  @msimberg, @tchaikov, @waywardmonkeys.

- Improved documentation and README

  (https://github.com/fmtlib/fmt/issues/2086,

  https://github.com/fmtlib/fmt/issues/3637,

  https://github.com/fmtlib/fmt/pull/3642,

  https://github.com/fmtlib/fmt/pull/3653,

  https://github.com/fmtlib/fmt/pull/3655,

  https://github.com/fmtlib/fmt/pull/3661,

  https://github.com/fmtlib/fmt/issues/3673,

  https://github.com/fmtlib/fmt/pull/3677,

  https://github.com/fmtlib/fmt/pull/3737,

  https://github.com/fmtlib/fmt/issues/3742,

  https://github.com/fmtlib/fmt/pull/3744).

  Thanks @idzm, @perlun, @joycebrum, @fennewald, @reinhardt1053, @GeorgeLS.

- Updated CI dependencies

  (https://github.com/fmtlib/fmt/pull/3615,

  https://github.com/fmtlib/fmt/pull/3622,

  https://github.com/fmtlib/fmt/pull/3623,

  https://github.com/fmtlib/fmt/pull/3666,

  https://github.com/fmtlib/fmt/pull/3696,

  https://github.com/fmtlib/fmt/pull/3697,

  https://github.com/fmtlib/fmt/pull/3759,

  https://github.com/fmtlib/fmt/pull/3782).

# 10.1.1 - 2023-08-28

- Added formatters for `std::atomic` and `atomic_flag`

  (https://github.com/fmtlib/fmt/pull/3574,

  https://github.com/fmtlib/fmt/pull/3594).

  Thanks @wangzw and @AlexGuteniev.

- Fixed an error about partial specialization of `formatter<string>`

  after instantiation when compiled with gcc and C++20

  (https://github.com/fmtlib/fmt/issues/3584).

- Fixed compilation as a C++20 module with gcc and clang

  (https://github.com/fmtlib/fmt/issues/3587,

  https://github.com/fmtlib/fmt/pull/3597,

  https://github.com/fmtlib/fmt/pull/3605).

  Thanks @MathewBensonCode.

- Made `fmt::to_string` work with types that have `format_as`

  overloads (https://github.com/fmtlib/fmt/pull/3575). Thanks @phprus.

- Made `formatted_size` work with integral format specifiers at

  compile time (https://github.com/fmtlib/fmt/pull/3591).

  Thanks @elbeno.

- Fixed a warning about the `no_unique_address` attribute on clang-cl

  (https://github.com/fmtlib/fmt/pull/3599). Thanks @lukester1975.

- Improved compatibility with the legacy GBK encoding

  (https://github.com/fmtlib/fmt/issues/3598,

  https://github.com/fmtlib/fmt/pull/3599). Thanks @YuHuanTin.

- Added OpenSSF Scorecard analysis

  (https://github.com/fmtlib/fmt/issues/3530,

  https://github.com/fmtlib/fmt/pull/3571). Thanks @joycebrum.

- Updated CI dependencies

  (https://github.com/fmtlib/fmt/pull/3591,

  https://github.com/fmtlib/fmt/pull/3592,

  https://github.com/fmtlib/fmt/pull/3593,

  https://github.com/fmtlib/fmt/pull/3602).

# 10.1.0 - 2023-08-12

- Optimized format string compilation resulting in up to 40% speed up

  in compiled `format_to` and \~4x speed up in compiled `format_to_n`

  on a concatenation benchmark

  (https://github.com/fmtlib/fmt/issues/3133,

  https://github.com/fmtlib/fmt/issues/3484).

  {fmt} 10.0:

      ---------------------------------------------------------

      Benchmark               Time             CPU   Iterations

      ---------------------------------------------------------

      BM_format_to         78.9 ns         78.9 ns      8881746

      BM_format_to_n        568 ns          568 ns      1232089

  {fmt} 10.1:

      ---------------------------------------------------------

      Benchmark               Time             CPU   Iterations

      ---------------------------------------------------------

      BM_format_to         54.9 ns         54.9 ns     12727944

      BM_format_to_n        133 ns          133 ns      5257795

- Optimized storage of an empty allocator in `basic_memory_buffer`

  (https://github.com/fmtlib/fmt/pull/3485). Thanks @Minty-Meeo.

- Added formatters for proxy references to elements of

  `std::vector<bool>` and `std::bitset<N>`

  (https://github.com/fmtlib/fmt/issues/3567,

  https://github.com/fmtlib/fmt/pull/3570). For example

  ([godbolt](https://godbolt.org/z/zYb79Pvn8)):

  ```c++

  #include <vector>

  #include <fmt/std.h>

  int main() {

    auto v = std::vector<bool>{true};

    fmt::print("{}", v[0]);

  }

  ```

  Thanks @phprus and @felix642.

- Fixed an ambiguous formatter specialization for containers that look

  like container adaptors such as `boost::flat_set`

  (https://github.com/fmtlib/fmt/issues/3556,

  https://github.com/fmtlib/fmt/pull/3561). Thanks @5chmidti.

- Fixed compilation when formatting durations not convertible from

  `std::chrono::seconds`

  (https://github.com/fmtlib/fmt/pull/3430). Thanks @patlkli.

- Made the `formatter` specialization for `char*` const-correct

  (https://github.com/fmtlib/fmt/pull/3432). Thanks @timsong-cpp.

- Made `{}` and `{:}` handled consistently during compile-time checks

  (https://github.com/fmtlib/fmt/issues/3526).

- Disallowed passing temporaries to `make_format_args` to improve API

  safety by preventing dangling references.

- Improved the compile-time error for unformattable types

  (https://github.com/fmtlib/fmt/pull/3478). Thanks @BRevzin.

- Improved the floating-point formatter

  (https://github.com/fmtlib/fmt/pull/3448,

  https://github.com/fmtlib/fmt/pull/3450).

  Thanks @florimond-collette.

- Fixed handling of precision for `long double` larger than 64 bits.

  (https://github.com/fmtlib/fmt/issues/3539,

  https://github.com/fmtlib/fmt/issues/3564).

- Made floating-point and chrono tests less platform-dependent

  (https://github.com/fmtlib/fmt/issues/3337,

  https://github.com/fmtlib/fmt/issues/3433,

  https://github.com/fmtlib/fmt/pull/3434). Thanks @phprus.

- Removed the remnants of the Grisu floating-point formatter that has

  been replaced by Dragonbox in earlier versions.

- Added `throw_format_error` to the public API

  (https://github.com/fmtlib/fmt/pull/3551). Thanks @mjerabek.

- Made `FMT_THROW` assert even if assertions are disabled when

  compiling with exceptions disabled

  (https://github.com/fmtlib/fmt/issues/3418,

  https://github.com/fmtlib/fmt/pull/3439). Thanks @BRevzin.

- Made `format_as` and `std::filesystem::path` formatter work with

  exotic code unit types.

  (https://github.com/fmtlib/fmt/pull/3457,

  https://github.com/fmtlib/fmt/pull/3476). Thanks @gix and @hmbj.

- Added support for the `?` format specifier to

  `std::filesystem::path` and made the default unescaped for

  consistency with strings.

- Deprecated the wide stream overload of `printf`.

- Removed unused `basic_printf_parse_context`.

- Improved RTTI detection used when formatting exceptions

  (https://github.com/fmtlib/fmt/pull/3468). Thanks @danakj.

- Improved compatibility with VxWorks7

  (https://github.com/fmtlib/fmt/pull/3467). Thanks @wenshan1.

- Improved documentation

  (https://github.com/fmtlib/fmt/issues/3174,

  https://github.com/fmtlib/fmt/issues/3423,

  https://github.com/fmtlib/fmt/pull/3454,

  https://github.com/fmtlib/fmt/issues/3458,

  https://github.com/fmtlib/fmt/pull/3461,

  https://github.com/fmtlib/fmt/issues/3487,

  https://github.com/fmtlib/fmt/pull/3515).

  Thanks @zencatalyst, @rlalik and @mikecrowe.

- Improved build and CI configurations

  (https://github.com/fmtlib/fmt/issues/3449,

  https://github.com/fmtlib/fmt/pull/3451,

  https://github.com/fmtlib/fmt/pull/3452,

  https://github.com/fmtlib/fmt/pull/3453,

  https://github.com/fmtlib/fmt/pull/3459,

  https://github.com/fmtlib/fmt/issues/3481,

  https://github.com/fmtlib/fmt/pull/3486,

  https://github.com/fmtlib/fmt/issues/3489,

  https://github.com/fmtlib/fmt/pull/3496,

  https://github.com/fmtlib/fmt/issues/3517,

  https://github.com/fmtlib/fmt/pull/3523,

  https://github.com/fmtlib/fmt/pull/3563).

  Thanks @joycebrum, @glebm, @phprus, @petrmanek, @setoye and @abouvier.

- Fixed various warnings and compilation issues

  (https://github.com/fmtlib/fmt/issues/3408,

  https://github.com/fmtlib/fmt/issues/3424,

  https://github.com/fmtlib/fmt/issues/3444,

  https://github.com/fmtlib/fmt/pull/3446,

  https://github.com/fmtlib/fmt/pull/3475,

  https://github.com/fmtlib/fmt/pull/3482,

  https://github.com/fmtlib/fmt/issues/3492,

  https://github.com/fmtlib/fmt/pull/3493,

  https://github.com/fmtlib/fmt/pull/3508,

  https://github.com/fmtlib/fmt/issues/3509,

  https://github.com/fmtlib/fmt/issues/3533,

  https://github.com/fmtlib/fmt/pull/3542,

  https://github.com/fmtlib/fmt/issues/3543,

  https://github.com/fmtlib/fmt/issues/3540,

  https://github.com/fmtlib/fmt/pull/3544,

  https://github.com/fmtlib/fmt/issues/3548,

  https://github.com/fmtlib/fmt/pull/3549,

  https://github.com/fmtlib/fmt/pull/3550,

  https://github.com/fmtlib/fmt/pull/3552).

  Thanks @adesitter, @hmbj, @Minty-Meeo, @phprus, @TobiSchluter,

  @kieranclancy, @alexeedm, @jurihock, @Ozomahtli and @razaqq.

# 10.0.0 - 2023-05-09

- Replaced Grisu with a new floating-point formatting algorithm for

  given precision (https://github.com/fmtlib/fmt/issues/3262,

  https://github.com/fmtlib/fmt/issues/2750,

  https://github.com/fmtlib/fmt/pull/3269,

  https://github.com/fmtlib/fmt/pull/3276). The new algorithm

  is based on Dragonbox already used for the shortest representation

  and gives substantial performance improvement:

  ![](https://user-images.githubusercontent.com/33922675/211956670-84891a09-6867-47d9-82fc-3230da7abe0f.png)

  -   Red: new algorithm

  -   Green: new algorithm with `FMT_USE_FULL_CACHE_DRAGONBOX` defined

      to 1

  -   Blue: old algorithm

  Thanks @jk-jeon.

- Replaced `snprintf`-based hex float formatter with an internal

  implementation (https://github.com/fmtlib/fmt/pull/3179,

  https://github.com/fmtlib/fmt/pull/3203). This removes the

  last usage of `s(n)printf` in {fmt}. Thanks @phprus.

- Fixed alignment of floating-point numbers with localization

  (https://github.com/fmtlib/fmt/issues/3263,

  https://github.com/fmtlib/fmt/pull/3272). Thanks @ShawnZhong.

- Made handling of `#` consistent with `std::format`.

- Improved C++20 module support

  (https://github.com/fmtlib/fmt/pull/3134,

  https://github.com/fmtlib/fmt/pull/3254,

  https://github.com/fmtlib/fmt/pull/3386,

  https://github.com/fmtlib/fmt/pull/3387,

  https://github.com/fmtlib/fmt/pull/3388,

  https://github.com/fmtlib/fmt/pull/3392,

  https://github.com/fmtlib/fmt/pull/3397,

  https://github.com/fmtlib/fmt/pull/3399,

  https://github.com/fmtlib/fmt/pull/3400).

  Thanks @laitingsheng, @Orvid and @DanielaE.

- Switched to the [modules CMake library](https://github.com/vitaut/modules)

  which allows building {fmt} as a C++20 module with clang:

      CXX=clang++ cmake -DFMT_MODULE=ON .

      make

- Made `format_as` work with any user-defined type and not just enums.

  For example ([godbolt](https://godbolt.org/z/b7rqhq5Kh)):

  ```c++

  #include <fmt/format.h>

  struct floaty_mc_floatface {

    double value;

  };

  auto format_as(floaty_mc_floatface f) { return f.value; }

  int main() {

    fmt::print("{:8}\n", floaty_mc_floatface{0.42}); // prints "    0.42"

  }

  ```