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Update changelog
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Victor Zverovich
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ChangeLog.md
109
ChangeLog.md
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# 11.0.0 - TBD
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- Added `fmt/base.h` which provides a subset of the API with minimal include
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dependencies and enough functionality to replace all uses of `*printf`.
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This brings the compile time of code using {fmt} much closer to the
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equivalent `printf` code as shown on the following benchmark that compiles
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100 source files:
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| Method | Compile Time (s) |
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|--------------|------------------|
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| printf | 1.6 |
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| IOStreams | 25.9 |
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| fmt | 4.8 |
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| tinyformat | 29.1 |
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| Boost Format | 55.0 |
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Note that this is purely formatting code and includes. In real projects the
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difference will be smaller partly because common standard headers will be
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included in almost any translation unit anyway.
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- Optimized includes in other headers such as `fmt/format.h` which is now
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roughly equivalent to the old `fmt/core.h`.
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- Improved C++20 module support
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(https://github.com/fmtlib/fmt/pull/3991,
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(https://github.com/fmtlib/fmt/issues/3990,
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https://github.com/fmtlib/fmt/pull/3991,
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https://github.com/fmtlib/fmt/issues/3993,
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https://github.com/fmtlib/fmt/pull/3997,
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https://github.com/fmtlib/fmt/pull/3998). Thanks @yujincheng08.
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https://github.com/fmtlib/fmt/pull/3998,
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https://github.com/fmtlib/fmt/pull/4004,
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https://github.com/fmtlib/fmt/pull/4005). Thanks @yujincheng08.
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- Added an option to replace standard includes with `import std` enabled via
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the `FMT_IMPORT_STD` macro (https://github.com/fmtlib/fmt/issues/3921,
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https://github.com/fmtlib/fmt/pull/3928).
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Thanks @matt77hias.
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https://github.com/fmtlib/fmt/pull/3928). Thanks @matt77hias.
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- Exported `range_format` and `range_format_kind` from the fmt module
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(https://github.com/fmtlib/fmt/pull/3970). Thanks @matt77hias.
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- Exported `fmt::range_format`, `fmt::range_format_kind` and
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`fmt::compiled_string` from the fmt module
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(https://github.com/fmtlib/fmt/pull/3970,
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https://github.com/fmtlib/fmt/pull/3999).
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Thanks @matt77hias and @yujincheng08.
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- Replaced double buffering with writing directly to a C stream buffer in
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`std::print`. This may give significant performance improvements ranging
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from tens of percent to [2x](https://stackoverflow.com/a/78457454/471164)
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and elimates dynamic memory allocation of the buffer. It is currently
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enabled for common types with more to come in the upcoming releases.
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- Improved safety of `format_to` when writting to an array
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(https://github.com/fmtlib/fmt/pull/3805).
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For example ([godbolt](https://www.godbolt.org/z/cYrn8dWY8)):
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```c++
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char volkswagen[4];
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auto result = fmt::format_to(volkswagen, "elephant");
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```
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no longer results in a buffer oveflow. Instead the output will be truncated
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and you can get the end iterator and whether truncation occurred from the
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`result` object. Thanks @ThePhD.
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- Added formatters for `std::chrono::day`, `std::chrono::month`,
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`std::chrono::year` and `std::chrono::year_month_day`
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(https://github.com/fmtlib/fmt/issues/3758,
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https://github.com/fmtlib/fmt/issues/3772,
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https://github.com/fmtlib/fmt/pull/3906). For example:
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https://github.com/fmtlib/fmt/pull/3906,
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https://github.com/fmtlib/fmt/pull/3913). For example:
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```c++
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#include <fmt/chrono.h>
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@ -64,9 +111,6 @@
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and allocators (https://github.com/fmtlib/fmt/issues/3938,
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https://github.com/fmtlib/fmt/pull/3943). Thanks @dieram3.
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- Improved safety of `format_to` when writting to an array
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(https://github.com/fmtlib/fmt/pull/3805). Thanks @ThePhD.
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- Added support for character range formatting
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(https://github.com/fmtlib/fmt/issues/3857,
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https://github.com/fmtlib/fmt/pull/3863). Thanks @js324.
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@ -87,15 +131,16 @@
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(https://github.com/fmtlib/fmt/issues/3802,
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https://github.com/fmtlib/fmt/pull/3946). Thanks @Arghnews.
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- Moved range and iterator overloads of `fmt::join` to `fmt/ranges.h`, next
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to other overloads.
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- Fixed hanling of types with `begin` returning `void` such as Eigen matrices
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(https://github.com/fmtlib/fmt/pull/3964). Thanks @Arghnews.
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(https://github.com/fmtlib/fmt/issues/3839,
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https://github.com/fmtlib/fmt/pull/3964). Thanks @Arghnews.
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- Added a `formattable` concept (https://github.com/fmtlib/fmt/pull/3974).
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Thanks @matt77hias.
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- Removed dependency on `<memory>` for `std::allocator_traits` when possible
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(https://github.com/fmtlib/fmt/pull/3804). Thanks @phprus.
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- Added support for `__float128` (https://github.com/fmtlib/fmt/issues/3494).
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- Fixed rounding issues when formatting `long double` with fixed precision
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@ -105,12 +150,27 @@
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(https://github.com/fmtlib/fmt/issues/3948,
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https://github.com/fmtlib/fmt/pull/3951). Thanks @alexdewar.
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- Removed dependency on `<memory>` for `std::allocator_traits` when possible
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(https://github.com/fmtlib/fmt/pull/3804). Thanks @phprus.
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- Enabled compile-time checks in formatting functions that take text colors and
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styles.
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- Deprecated wide stream overloads of `fmt::print` that take text styles.
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- Made format string compilation work with clang 12 and later despite
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only partial non-type template parameter support
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(https://github.com/fmtlib/fmt/issues/4000,
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https://github.com/fmtlib/fmt/pull/4001). Thanks @yujincheng08.
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- Made `iterator_buffer`'s move constructor `noexcept`
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(https://github.com/fmtlib/fmt/pull/3808). Thanks @waywardmonkeys.
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- Started enforcing that `formatter::format` is const for compatibility with
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`std::format` (https://github.com/fmtlib/fmt/issues/3447).
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- Added `fmt::basic_format_arg::visit` and deprecated `fmt::visit_format_arg`.
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- Made `fmt::basic_string_view` not constructible from `nullptr` for
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consistency with `std::string_view` in C++23
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(https://github.com/fmtlib/fmt/pull/3846). Thanks @dalle.
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@ -149,9 +209,10 @@
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https://github.com/fmtlib/fmt/issues/3894,
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https://github.com/fmtlib/fmt/pull/3895,
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https://github.com/fmtlib/fmt/pull/3905,
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https://github.com/fmtlib/fmt/issues/3942).
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https://github.com/fmtlib/fmt/issues/3942,
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https://github.com/fmtlib/fmt/pull/4008).
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Thanks @zencatalyst, WolleTD, @tupaschoal, @Dobiasd, @frank-weinberg, @bbolli,
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@phprus, @waywardmonkeys and @js324.
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@phprus, @waywardmonkeys, @js324 and @tchaikov.
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- Improved CI and tests
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(https://github.com/fmtlib/fmt/issues/3878,
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@ -159,7 +220,8 @@
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https://github.com/fmtlib/fmt/issues/3897,
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https://github.com/fmtlib/fmt/pull/3979,
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https://github.com/fmtlib/fmt/pull/3980,
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https://github.com/fmtlib/fmt/pull/3988).
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https://github.com/fmtlib/fmt/pull/3988,
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https://github.com/fmtlib/fmt/pull/4010).
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Thanks @vgorrX, @waywardmonkeys, @tchaikov and @phprus.
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- Fixed buffer overflow when using format string compilation with debug format
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@ -179,7 +241,8 @@
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https://github.com/fmtlib/fmt/pull/3907). Thanks @phprus and @xTachyon.
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- Fixed various warnings and compilation issues
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(https://github.com/fmtlib/fmt/issues/3769,
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(https://github.com/fmtlib/fmt/issues/3685,
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https://github.com/fmtlib/fmt/issues/3769,
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https://github.com/fmtlib/fmt/issues/3796,
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https://github.com/fmtlib/fmt/issues/3803,
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https://github.com/fmtlib/fmt/pull/3806,
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https://github.com/fmtlib/fmt/issues/3925,
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https://github.com/fmtlib/fmt/pull/3930,
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https://github.com/fmtlib/fmt/pull/3931,
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https://github.com/fmtlib/fmt/pull/3933,
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https://github.com/fmtlib/fmt/issues/3935,
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https://github.com/fmtlib/fmt/pull/3937,
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https://github.com/fmtlib/fmt/pull/3967,
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https://github.com/fmtlib/fmt/pull/3968,
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https://github.com/fmtlib/fmt/pull/3972,
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https://github.com/fmtlib/fmt/pull/3983,).
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https://github.com/fmtlib/fmt/pull/3983).
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Thanks @hmbj, @phprus, @res2k, @Baardi, @matt77hias, @waywardmonkeys, @hmbj,
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@yakra, @prlw1, @Arghnews, @mtillmann0, @ShifftC and @eepp.
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@yakra, @prlw1, @Arghnews, @mtillmann0, @ShifftC, @eepp and @jimmy-park.
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# 10.2.1 - 2024-01-04
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@ -936,8 +1000,9 @@
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(https://github.com/fmtlib/fmt/issues/3108,
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https://github.com/fmtlib/fmt/issues/3169,
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https://github.com/fmtlib/fmt/pull/3243).
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https://github.com/fmtlib/fmt/pull/3404).
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Thanks @Cleroth and @Vertexwahn.
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https://github.com/fmtlib/fmt/pull/3404,
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https://github.com/fmtlib/fmt/pull/4002).
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Thanks @Cleroth, @Vertexwahn and @yujincheng08.
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- Improved build configuration and tests
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(https://github.com/fmtlib/fmt/pull/3118,
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