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# 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.
- 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"
}
```
- Removed deprecated implicit conversions for enums and conversions to
primitive types for compatibility with `std::format` and to prevent
potential ODR violations. Use `format_as` instead.
- Added support for fill, align and width to the time point formatter
(https://github.com/fmtlib/fmt/issues/3237,
https://github.com/fmtlib/fmt/pull/3260,
https://github.com/fmtlib/fmt/pull/3275). For example
([godbolt](https://godbolt.org/z/rKP6MGz6c)):
```c++
#include <fmt/chrono.h>
int main() {
// prints " 2023"
fmt::print("{:>8%Y}\n", std::chrono::system_clock::now());
}
```
Thanks @ShawnZhong.
- Implemented formatting of subseconds
(https://github.com/fmtlib/fmt/issues/2207,
https://github.com/fmtlib/fmt/issues/3117,
https://github.com/fmtlib/fmt/pull/3115,
https://github.com/fmtlib/fmt/pull/3143,
https://github.com/fmtlib/fmt/pull/3144,
https://github.com/fmtlib/fmt/pull/3349). For example
([godbolt](https://godbolt.org/z/45738oGEo)):
```c++
#include <fmt/chrono.h>
int main() {
// prints 01.234567
fmt::print("{:%S}\n", std::chrono::microseconds(1234567));
}
```
Thanks @patrickroocks @phprus and @BRevzin.
- Added precision support to `%S`
(https://github.com/fmtlib/fmt/pull/3148). Thanks @SappyJoy
- Added support for `std::utc_time`
(https://github.com/fmtlib/fmt/issues/3098,
https://github.com/fmtlib/fmt/pull/3110). Thanks @patrickroocks.
- Switched formatting of `std::chrono::system_clock` from local time
to UTC for compatibility with the standard
(https://github.com/fmtlib/fmt/issues/3199,
https://github.com/fmtlib/fmt/pull/3230). Thanks @ned14.
- Added support for `%Ez` and `%Oz` to chrono formatters.
(https://github.com/fmtlib/fmt/issues/3220,
https://github.com/fmtlib/fmt/pull/3222). Thanks @phprus.
- Improved validation of format specifiers for `std::chrono::duration`
(https://github.com/fmtlib/fmt/issues/3219,
https://github.com/fmtlib/fmt/pull/3232). Thanks @ShawnZhong.
- Fixed formatting of time points before the epoch
(https://github.com/fmtlib/fmt/issues/3117,
https://github.com/fmtlib/fmt/pull/3261). For example
([godbolt](https://godbolt.org/z/f7bcznb3W)):
```c++
#include <fmt/chrono.h>
int main() {
auto t = std::chrono::system_clock::from_time_t(0) -
std::chrono::milliseconds(250);
fmt::print("{:%S}\n", t); // prints 59.750000000
}
```
Thanks @ShawnZhong.
- Experimental: implemented glibc extension for padding seconds,
minutes and hours
(https://github.com/fmtlib/fmt/issues/2959,
https://github.com/fmtlib/fmt/pull/3271). Thanks @ShawnZhong.
- Added a formatter for `std::exception`
(https://github.com/fmtlib/fmt/issues/2977,
https://github.com/fmtlib/fmt/issues/3012,
https://github.com/fmtlib/fmt/pull/3062,
https://github.com/fmtlib/fmt/pull/3076,
https://github.com/fmtlib/fmt/pull/3119). For example
([godbolt](https://godbolt.org/z/8xoWGs9e4)):
```c++
#include <fmt/std.h>
#include <vector>
int main() {
try {
std::vector<bool>().at(0);
} catch(const std::exception& e) {
fmt::print("{}", e);
}
}
```
prints:
vector<bool>::_M_range_check: __n (which is 0) >= this->size() (which is 0)
on libstdc++. Thanks @zach2good and @phprus.
- Moved `std::error_code` formatter from `fmt/os.h` to `fmt/std.h`.
(https://github.com/fmtlib/fmt/pull/3125). Thanks @phprus.
- Added formatters for standard container adapters:
`std::priority_queue`, `std::queue` and `std::stack`
(https://github.com/fmtlib/fmt/issues/3215,
https://github.com/fmtlib/fmt/pull/3279). For example
([godbolt](https://godbolt.org/z/74h1xY9qK)):
```c++
#include <fmt/ranges.h>
#include <stack>
#include <vector>
int main() {
auto s = std::stack<bool, std::vector<bool>>();
for (auto b: {true, false, true}) s.push(b);
fmt::print("{}\n", s); // prints [true, false, true]
}
```
Thanks @ShawnZhong.
- Added a formatter for `std::optional` to `fmt/std.h`
(https://github.com/fmtlib/fmt/issues/1367,
https://github.com/fmtlib/fmt/pull/3303).
Thanks @tom-huntington.
- Fixed formatting of valueless by exception variants
(https://github.com/fmtlib/fmt/pull/3347). Thanks @TheOmegaCarrot.
- Made `fmt::ptr` accept `unique_ptr` with a custom deleter
(https://github.com/fmtlib/fmt/pull/3177). Thanks @hmbj.
- Fixed formatting of noncopyable ranges and nested ranges of chars
(https://github.com/fmtlib/fmt/pull/3158
https://github.com/fmtlib/fmt/issues/3286,
https://github.com/fmtlib/fmt/pull/3290). Thanks @BRevzin.
- Fixed issues with formatting of paths and ranges of paths
(https://github.com/fmtlib/fmt/issues/3319,
https://github.com/fmtlib/fmt/pull/3321
https://github.com/fmtlib/fmt/issues/3322). Thanks @phprus.
- Improved handling of invalid Unicode in paths.
- Enabled compile-time checks on Apple clang 14 and later
(https://github.com/fmtlib/fmt/pull/3331). Thanks @cloyce.
- Improved compile-time checks of named arguments
(https://github.com/fmtlib/fmt/issues/3105,
https://github.com/fmtlib/fmt/pull/3214). Thanks @rbrich.
- Fixed formatting when both alignment and `0` are given
(https://github.com/fmtlib/fmt/issues/3236,
https://github.com/fmtlib/fmt/pull/3248). Thanks @ShawnZhong.
- Improved Unicode support in the experimental file API on Windows
(https://github.com/fmtlib/fmt/issues/3234,
https://github.com/fmtlib/fmt/pull/3293). Thanks @Fros1er.
- Unified UTF transcoding
(https://github.com/fmtlib/fmt/pull/3416). Thanks @phprus.
- Added support for UTF-8 digit separators via an experimental locale
facet (https://github.com/fmtlib/fmt/issues/1861). For
example ([godbolt](https://godbolt.org/z/f7bcznb3W)):
```c++
auto loc = std::locale(
std::locale(), new fmt::format_facet<std::locale>("’"));
auto s = fmt::format(loc, "{:L}", 1000);
```
where `’` is U+2019 used as a digit separator in the de_CH locale.
- Added an overload of `formatted_size` that takes a locale
(https://github.com/fmtlib/fmt/issues/3084,
https://github.com/fmtlib/fmt/pull/3087). Thanks @gerboengels.
- Removed the deprecated `FMT_DEPRECATED_OSTREAM`.
- Fixed a UB when using a null `std::string_view` with
`fmt::to_string` or format string compilation
(https://github.com/fmtlib/fmt/issues/3241,
https://github.com/fmtlib/fmt/pull/3244). Thanks @phprus.
- Added `starts_with` to the fallback `string_view` implementation
(https://github.com/fmtlib/fmt/pull/3080). Thanks @phprus.
- Added `fmt::basic_format_string::get()` for compatibility with
`basic_format_string`
(https://github.com/fmtlib/fmt/pull/3111). Thanks @huangqinjin.
- Added `println` for compatibility with C++23
(https://github.com/fmtlib/fmt/pull/3267). Thanks @ShawnZhong.
- Renamed the `FMT_EXPORT` macro for shared library usage to
`FMT_LIB_EXPORT`.
- Improved documentation
(https://github.com/fmtlib/fmt/issues/3108,
https://github.com/fmtlib/fmt/issues/3169,
https://github.com/fmtlib/fmt/pull/3243).
https://github.com/fmtlib/fmt/pull/3404,
https://github.com/fmtlib/fmt/pull/4002).
Thanks @Cleroth, @Vertexwahn and @yujincheng08.
- Improved build configuration and tests
(https://github.com/fmtlib/fmt/pull/3118,
https://github.com/fmtlib/fmt/pull/3120,
https://github.com/fmtlib/fmt/pull/3188,
https://github.com/fmtlib/fmt/issues/3189,
https://github.com/fmtlib/fmt/pull/3198,
https://github.com/fmtlib/fmt/pull/3205,
https://github.com/fmtlib/fmt/pull/3207,
https://github.com/fmtlib/fmt/pull/3210,
https://github.com/fmtlib/fmt/pull/3240,
https://github.com/fmtlib/fmt/pull/3256,
https://github.com/fmtlib/fmt/pull/3264,
https://github.com/fmtlib/fmt/issues/3299,
https://github.com/fmtlib/fmt/pull/3302,
https://github.com/fmtlib/fmt/pull/3312,
https://github.com/fmtlib/fmt/issues/3317,
https://github.com/fmtlib/fmt/pull/3328,
https://github.com/fmtlib/fmt/pull/3333,
https://github.com/fmtlib/fmt/pull/3369,
https://github.com/fmtlib/fmt/issues/3373,
https://github.com/fmtlib/fmt/pull/3395,
https://github.com/fmtlib/fmt/pull/3406,
https://github.com/fmtlib/fmt/pull/3411).
Thanks @dimztimz, @phprus, @DavidKorczynski, @ChrisThrasher,
@FrancoisCarouge, @kennyweiss, @luzpaz, @codeinred, @Mixaill, @joycebrum,
@kevinhwang and @Vertexwahn.
- Fixed a regression in handling empty format specifiers after a colon
(`{:}`) (https://github.com/fmtlib/fmt/pull/3086). Thanks @oxidase.
- Worked around a broken implementation of
`std::is_constant_evaluated` in some versions of libstdc++ on clang
(https://github.com/fmtlib/fmt/issues/3247,
https://github.com/fmtlib/fmt/pull/3281). Thanks @phprus.
- Fixed formatting of volatile variables
(https://github.com/fmtlib/fmt/pull/3068).
- Fixed various warnings and compilation issues
(https://github.com/fmtlib/fmt/pull/3057,
https://github.com/fmtlib/fmt/pull/3066,
https://github.com/fmtlib/fmt/pull/3072,
https://github.com/fmtlib/fmt/pull/3082,
https://github.com/fmtlib/fmt/pull/3091,
https://github.com/fmtlib/fmt/issues/3092,
https://github.com/fmtlib/fmt/pull/3093,
https://github.com/fmtlib/fmt/pull/3095,
https://github.com/fmtlib/fmt/issues/3096,
https://github.com/fmtlib/fmt/pull/3097,
https://github.com/fmtlib/fmt/issues/3128,
https://github.com/fmtlib/fmt/pull/3129,
https://github.com/fmtlib/fmt/pull/3137,
https://github.com/fmtlib/fmt/pull/3139,
https://github.com/fmtlib/fmt/issues/3140,
https://github.com/fmtlib/fmt/pull/3142,
https://github.com/fmtlib/fmt/issues/3149,
https://github.com/fmtlib/fmt/pull/3150,
https://github.com/fmtlib/fmt/issues/3154,
https://github.com/fmtlib/fmt/issues/3163,
https://github.com/fmtlib/fmt/issues/3178,
https://github.com/fmtlib/fmt/pull/3184,
https://github.com/fmtlib/fmt/pull/3196,
https://github.com/fmtlib/fmt/issues/3204,
https://github.com/fmtlib/fmt/pull/3206,
https://github.com/fmtlib/fmt/pull/3208,
https://github.com/fmtlib/fmt/issues/3213,
https://github.com/fmtlib/fmt/pull/3216,
https://github.com/fmtlib/fmt/issues/3224,
https://github.com/fmtlib/fmt/issues/3226,
https://github.com/fmtlib/fmt/issues/3228,
https://github.com/fmtlib/fmt/pull/3229,
https://github.com/fmtlib/fmt/pull/3259,
https://github.com/fmtlib/fmt/issues/3274,
https://github.com/fmtlib/fmt/issues/3287,
https://github.com/fmtlib/fmt/pull/3288,
https://github.com/fmtlib/fmt/issues/3292,
https://github.com/fmtlib/fmt/pull/3295,
https://github.com/fmtlib/fmt/pull/3296,
https://github.com/fmtlib/fmt/issues/3298,
https://github.com/fmtlib/fmt/issues/3325,
https://github.com/fmtlib/fmt/pull/3326,
https://github.com/fmtlib/fmt/issues/3334,
https://github.com/fmtlib/fmt/issues/3342,
https://github.com/fmtlib/fmt/pull/3343,
https://github.com/fmtlib/fmt/issues/3351,
https://github.com/fmtlib/fmt/pull/3352,
https://github.com/fmtlib/fmt/pull/3362,
https://github.com/fmtlib/fmt/issues/3365,
https://github.com/fmtlib/fmt/pull/3366,
https://github.com/fmtlib/fmt/pull/3374,
https://github.com/fmtlib/fmt/issues/3377,
https://github.com/fmtlib/fmt/pull/3378,
https://github.com/fmtlib/fmt/issues/3381,
https://github.com/fmtlib/fmt/pull/3398,
https://github.com/fmtlib/fmt/pull/3413,
https://github.com/fmtlib/fmt/issues/3415).
Thanks @phprus, @gsjaardema, @NewbieOrange, @EngineLessCC, @asmaloney,
@HazardyKnusperkeks, @sergiud, @Youw, @thesmurph, @czudziakm,
@Roman-Koshelev, @chronoxor, @ShawnZhong, @russelltg, @glebm, @tmartin-gh,
@Zhaojun-Liu, @louiswins and @mogemimi.
# 9.1.0 - 2022-08-27
- `fmt::formatted_size` now works at compile time
(https://github.com/fmtlib/fmt/pull/3026). For example
([godbolt](https://godbolt.org/z/1MW5rMdf8)):
```c++
#include <fmt/compile.h>
int main() {
using namespace fmt::literals;
constexpr size_t n = fmt::formatted_size("{}"_cf, 42);
fmt::print("{}\n", n); // prints 2
}
```
Thanks @marksantaniello.
- Fixed handling of invalid UTF-8
(https://github.com/fmtlib/fmt/pull/3038,
https://github.com/fmtlib/fmt/pull/3044,
https://github.com/fmtlib/fmt/pull/3056).
Thanks @phprus and @skeeto.
- Improved Unicode support in `ostream` overloads of `print`
(https://github.com/fmtlib/fmt/pull/2994,
https://github.com/fmtlib/fmt/pull/3001,
https://github.com/fmtlib/fmt/pull/3025). Thanks @dimztimz.
- Fixed handling of the sign specifier in localized formatting on
systems with 32-bit `wchar_t`
(https://github.com/fmtlib/fmt/issues/3041).
- Added support for wide streams to `fmt::streamed`
(https://github.com/fmtlib/fmt/pull/2994). Thanks @phprus.
- Added the `n` specifier that disables the output of delimiters when
formatting ranges (https://github.com/fmtlib/fmt/pull/2981,
https://github.com/fmtlib/fmt/pull/2983). For example
([godbolt](https://godbolt.org/z/roKqGdj8c)):
```c++
#include <fmt/ranges.h>
#include <vector>
int main() {
auto v = std::vector{1, 2, 3};
fmt::print("{:n}\n", v); // prints 1, 2, 3
}
```
Thanks @BRevzin.
- Worked around problematic `std::string_view` constructors introduced
in C++23 (https://github.com/fmtlib/fmt/issues/3030,
https://github.com/fmtlib/fmt/issues/3050). Thanks @strega-nil-ms.
- Improve handling (exclusion) of recursive ranges
(https://github.com/fmtlib/fmt/issues/2968,
https://github.com/fmtlib/fmt/pull/2974). Thanks @Dani-Hub.
- Improved error reporting in format string compilation
(https://github.com/fmtlib/fmt/issues/3055).
- Improved the implementation of
[Dragonbox](https://github.com/jk-jeon/dragonbox), the algorithm
used for the default floating-point formatting
(https://github.com/fmtlib/fmt/pull/2984). Thanks @jk-jeon.
- Fixed issues with floating-point formatting on exotic platforms.
- Improved the implementation of chrono formatting
(https://github.com/fmtlib/fmt/pull/3010). Thanks @phprus.
- Improved documentation
(https://github.com/fmtlib/fmt/pull/2966,
https://github.com/fmtlib/fmt/pull/3009,
https://github.com/fmtlib/fmt/issues/3020,
https://github.com/fmtlib/fmt/pull/3037).
Thanks @mwinterb, @jcelerier and @remiburtin.
- Improved build configuration
(https://github.com/fmtlib/fmt/pull/2991,
https://github.com/fmtlib/fmt/pull/2995,
https://github.com/fmtlib/fmt/issues/3004,
https://github.com/fmtlib/fmt/pull/3007,
https://github.com/fmtlib/fmt/pull/3040).
Thanks @dimztimz and @hwhsu1231.
- Fixed various warnings and compilation issues
(https://github.com/fmtlib/fmt/issues/2969,
https://github.com/fmtlib/fmt/pull/2971,
https://github.com/fmtlib/fmt/issues/2975,
https://github.com/fmtlib/fmt/pull/2982,
https://github.com/fmtlib/fmt/pull/2985,
https://github.com/fmtlib/fmt/issues/2988,
https://github.com/fmtlib/fmt/issues/2989,
https://github.com/fmtlib/fmt/issues/3000,
https://github.com/fmtlib/fmt/issues/3006,
https://github.com/fmtlib/fmt/issues/3014,
https://github.com/fmtlib/fmt/issues/3015,
https://github.com/fmtlib/fmt/pull/3021,
https://github.com/fmtlib/fmt/issues/3023,
https://github.com/fmtlib/fmt/pull/3024,
https://github.com/fmtlib/fmt/pull/3029,
https://github.com/fmtlib/fmt/pull/3043,
https://github.com/fmtlib/fmt/issues/3052,
https://github.com/fmtlib/fmt/pull/3053,
https://github.com/fmtlib/fmt/pull/3054).
Thanks @h-friederich, @dimztimz, @olupton, @bernhardmgruber and @phprus.
# 9.0.0 - 2022-07-04
- Switched to the internal floating point formatter for all decimal
presentation formats. In particular this results in consistent
rounding on all platforms and removing the `s[n]printf` fallback for
decimal FP formatting.
- Compile-time floating point formatting no longer requires the
header-only mode. For example
([godbolt](https://godbolt.org/z/G37PTeG3b)):
```c++
#include <array>
#include <fmt/compile.h>
consteval auto compile_time_dtoa(double value) -> std::array<char, 10> {
auto result = std::array<char, 10>();
fmt::format_to(result.data(), FMT_COMPILE("{}"), value);
return result;
}
constexpr auto answer = compile_time_dtoa(0.42);
```
works with the default settings.
- Improved the implementation of
[Dragonbox](https://github.com/jk-jeon/dragonbox), the algorithm
used for the default floating-point formatting
(https://github.com/fmtlib/fmt/pull/2713,
https://github.com/fmtlib/fmt/pull/2750). Thanks @jk-jeon.
- Made `fmt::to_string` work with `__float128`. This uses the internal
FP formatter and works even on system without `__float128` support
in `[s]printf`.
- Disabled automatic `std::ostream` insertion operator (`operator<<`)
discovery when `fmt/ostream.h` is included to prevent ODR
violations. You can get the old behavior by defining
`FMT_DEPRECATED_OSTREAM` but this will be removed in the next major
release. Use `fmt::streamed` or `fmt::ostream_formatter` to enable
formatting via `std::ostream` instead.
- Added `fmt::ostream_formatter` that can be used to write `formatter`
specializations that perform formatting via `std::ostream`. For
example ([godbolt](https://godbolt.org/z/5sEc5qMsf)):
```c++
#include <fmt/ostream.h>
struct date {
int year, month, day;
friend std::ostream& operator<<(std::ostream& os, const date& d) {
return os << d.year << '-' << d.month << '-' << d.day;
}
};
template <> struct fmt::formatter<date> : ostream_formatter {};
std::string s = fmt::format("The date is {}", date{2012, 12, 9});
// s == "The date is 2012-12-9"
```
- Added the `fmt::streamed` function that takes an object and formats
it via `std::ostream`. For example
([godbolt](https://godbolt.org/z/5G3346G1f)):
```c++
#include <thread>
#include <fmt/ostream.h>
int main() {
fmt::print("Current thread id: {}\n",
fmt::streamed(std::this_thread::get_id()));
}
```
Note that `fmt/std.h` provides a `formatter` specialization for
`std::thread::id` so you don\'t need to format it via
`std::ostream`.
- Deprecated implicit conversions of unscoped enums to integers for
consistency with scoped enums.
- Added an argument-dependent lookup based `format_as` extension API
to simplify formatting of enums.
- Added experimental `std::variant` formatting support
(https://github.com/fmtlib/fmt/pull/2941). For example
([godbolt](https://godbolt.org/z/KG9z6cq68)):
```c++
#include <variant>
#include <fmt/std.h>
int main() {
auto v = std::variant<int, std::string>(42);
fmt::print("{}\n", v);
}
```
prints:
variant(42)
Thanks @jehelset.
- Added experimental `std::filesystem::path` formatting support
(https://github.com/fmtlib/fmt/issues/2865,
https://github.com/fmtlib/fmt/pull/2902,
https://github.com/fmtlib/fmt/issues/2917,
https://github.com/fmtlib/fmt/pull/2918). For example
([godbolt](https://godbolt.org/z/o44dMexEb)):
```c++
#include <filesystem>
#include <fmt/std.h>
int main() {
fmt::print("There is no place like {}.", std::filesystem::path("/home"));
}
```
prints:
There is no place like "/home".
Thanks @phprus.
- Added a `std::thread::id` formatter to `fmt/std.h`. For example
([godbolt](https://godbolt.org/z/j1azbYf3E)):
```c++
#include <thread>
#include <fmt/std.h>
int main() {
fmt::print("Current thread id: {}\n", std::this_thread::get_id());
}
```
- Added `fmt::styled` that applies a text style to an individual
argument (https://github.com/fmtlib/fmt/pull/2793). For
example ([godbolt](https://godbolt.org/z/vWGW7v5M6)):
```c++
#include <fmt/chrono.h>
#include <fmt/color.h>
int main() {
auto now = std::chrono::system_clock::now();
fmt::print(
"[{}] {}: {}\n",
fmt::styled(now, fmt::emphasis::bold),
fmt::styled("error", fg(fmt::color::red)),
"something went wrong");
}
```
prints
![](https://user-images.githubusercontent.com/576385/175071215-12809244-dab0-4005-96d8-7cd911c964d5.png)
Thanks @rbrugo.
- Made `fmt::print` overload for text styles correctly handle UTF-8
(https://github.com/fmtlib/fmt/issues/2681,
https://github.com/fmtlib/fmt/pull/2701). Thanks @AlexGuteniev.
- Fixed Unicode handling when writing to an ostream.
- Added support for nested specifiers to range formatting
(https://github.com/fmtlib/fmt/pull/2673). For example
([godbolt](https://godbolt.org/z/xd3Gj38cf)):
```c++
#include <vector>
#include <fmt/ranges.h>
int main() {
fmt::print("{::#x}\n", std::vector{10, 20, 30});
}
```
prints `[0xa, 0x14, 0x1e]`.
Thanks @BRevzin.
- Implemented escaping of wide strings in ranges
(https://github.com/fmtlib/fmt/pull/2904). Thanks @phprus.
- Added support for ranges with `begin` / `end` found via the
argument-dependent lookup
(https://github.com/fmtlib/fmt/pull/2807). Thanks @rbrugo.
- Fixed formatting of certain kinds of ranges of ranges
(https://github.com/fmtlib/fmt/pull/2787). Thanks @BRevzin.
- Fixed handling of maps with element types other than `std::pair`
(https://github.com/fmtlib/fmt/pull/2944). Thanks @BrukerJWD.
- Made tuple formatter enabled only if elements are formattable
(https://github.com/fmtlib/fmt/issues/2939,
https://github.com/fmtlib/fmt/pull/2940). Thanks @jehelset.
- Made `fmt::join` compatible with format string compilation
(https://github.com/fmtlib/fmt/issues/2719,
https://github.com/fmtlib/fmt/pull/2720). Thanks @phprus.
- Made compile-time checks work with named arguments of custom types
and `std::ostream` `print` overloads
(https://github.com/fmtlib/fmt/issues/2816,
https://github.com/fmtlib/fmt/issues/2817,
https://github.com/fmtlib/fmt/pull/2819). Thanks @timsong-cpp.
- Removed `make_args_checked` because it is no longer needed for
compile-time checks
(https://github.com/fmtlib/fmt/pull/2760). Thanks @phprus.
- Removed the following deprecated APIs: `_format`, `arg_join`, the
`format_to` overload that takes a memory buffer, `[v]fprintf` that
takes an `ostream`.
- Removed the deprecated implicit conversion of `[const] signed char*`
and `[const] unsigned char*` to C strings.
- Removed the deprecated `fmt/locale.h`.
- Replaced the deprecated `fileno()` with `descriptor()` in
`buffered_file`.
- Moved `to_string_view` to the `detail` namespace since it\'s an
implementation detail.
- Made access mode of a created file consistent with `fopen` by
setting `S_IWGRP` and `S_IWOTH`
(https://github.com/fmtlib/fmt/pull/2733). Thanks @arogge.
- Removed a redundant buffer resize when formatting to `std::ostream`
(https://github.com/fmtlib/fmt/issues/2842,
https://github.com/fmtlib/fmt/pull/2843). Thanks @jcelerier.
- Made precision computation for strings consistent with width
(https://github.com/fmtlib/fmt/issues/2888).
- Fixed handling of locale separators in floating point formatting
(https://github.com/fmtlib/fmt/issues/2830).
- Made sign specifiers work with `__int128_t`
(https://github.com/fmtlib/fmt/issues/2773).
- Improved support for systems such as CHERI with extra data stored in
pointers (https://github.com/fmtlib/fmt/pull/2932).
Thanks @davidchisnall.
- Improved documentation
(https://github.com/fmtlib/fmt/pull/2706,
https://github.com/fmtlib/fmt/pull/2712,
https://github.com/fmtlib/fmt/pull/2789,
https://github.com/fmtlib/fmt/pull/2803,
https://github.com/fmtlib/fmt/pull/2805,
https://github.com/fmtlib/fmt/pull/2815,
https://github.com/fmtlib/fmt/pull/2924).
Thanks @BRevzin, @Pokechu22, @setoye, @rtobar, @rbrugo, @anoonD and
@leha-bot.
- Improved build configuration
(https://github.com/fmtlib/fmt/pull/2766,
https://github.com/fmtlib/fmt/pull/2772,
https://github.com/fmtlib/fmt/pull/2836,
https://github.com/fmtlib/fmt/pull/2852,
https://github.com/fmtlib/fmt/pull/2907,
https://github.com/fmtlib/fmt/pull/2913,
https://github.com/fmtlib/fmt/pull/2914).
Thanks @kambala-decapitator, @mattiasljungstrom, @kieselnb, @nathannaveen
and @Vertexwahn.
- Fixed various warnings and compilation issues
(https://github.com/fmtlib/fmt/issues/2408,
https://github.com/fmtlib/fmt/issues/2507,
https://github.com/fmtlib/fmt/issues/2697,
https://github.com/fmtlib/fmt/issues/2715,
https://github.com/fmtlib/fmt/issues/2717,
https://github.com/fmtlib/fmt/pull/2722,
https://github.com/fmtlib/fmt/pull/2724,
https://github.com/fmtlib/fmt/pull/2725,
https://github.com/fmtlib/fmt/issues/2726,
https://github.com/fmtlib/fmt/pull/2728,
https://github.com/fmtlib/fmt/pull/2732,
https://github.com/fmtlib/fmt/issues/2738,
https://github.com/fmtlib/fmt/pull/2742,
https://github.com/fmtlib/fmt/issues/2744,
https://github.com/fmtlib/fmt/issues/2745,
https://github.com/fmtlib/fmt/issues/2746,
https://github.com/fmtlib/fmt/issues/2754,
https://github.com/fmtlib/fmt/pull/2755,
https://github.com/fmtlib/fmt/issues/2757,
https://github.com/fmtlib/fmt/pull/2758,
https://github.com/fmtlib/fmt/issues/2761,
https://github.com/fmtlib/fmt/pull/2762,
https://github.com/fmtlib/fmt/issues/2763,
https://github.com/fmtlib/fmt/pull/2765,
https://github.com/fmtlib/fmt/issues/2769,
https://github.com/fmtlib/fmt/pull/2770,
https://github.com/fmtlib/fmt/issues/2771,
https://github.com/fmtlib/fmt/issues/2777,
https://github.com/fmtlib/fmt/pull/2779,
https://github.com/fmtlib/fmt/pull/2782,
https://github.com/fmtlib/fmt/pull/2783,
https://github.com/fmtlib/fmt/issues/2794,
https://github.com/fmtlib/fmt/issues/2796,
https://github.com/fmtlib/fmt/pull/2797,
https://github.com/fmtlib/fmt/pull/2801,
https://github.com/fmtlib/fmt/pull/2802,
https://github.com/fmtlib/fmt/issues/2808,
https://github.com/fmtlib/fmt/issues/2818,
https://github.com/fmtlib/fmt/pull/2819,
https://github.com/fmtlib/fmt/issues/2829,
https://github.com/fmtlib/fmt/issues/2835,
https://github.com/fmtlib/fmt/issues/2848,
https://github.com/fmtlib/fmt/issues/2860,
https://github.com/fmtlib/fmt/pull/2861,
https://github.com/fmtlib/fmt/pull/2882,
https://github.com/fmtlib/fmt/issues/2886,
https://github.com/fmtlib/fmt/issues/2891,
https://github.com/fmtlib/fmt/pull/2892,
https://github.com/fmtlib/fmt/issues/2895,
https://github.com/fmtlib/fmt/issues/2896,
https://github.com/fmtlib/fmt/pull/2903,
https://github.com/fmtlib/fmt/issues/2906,
https://github.com/fmtlib/fmt/issues/2908,
https://github.com/fmtlib/fmt/pull/2909,
https://github.com/fmtlib/fmt/issues/2920,
https://github.com/fmtlib/fmt/pull/2922,
https://github.com/fmtlib/fmt/pull/2927,
https://github.com/fmtlib/fmt/pull/2929,
https://github.com/fmtlib/fmt/issues/2936,
https://github.com/fmtlib/fmt/pull/2937,
https://github.com/fmtlib/fmt/pull/2938,
https://github.com/fmtlib/fmt/pull/2951,
https://github.com/fmtlib/fmt/issues/2954,
https://github.com/fmtlib/fmt/pull/2957,
https://github.com/fmtlib/fmt/issues/2958,
https://github.com/fmtlib/fmt/pull/2960).
Thanks @matrackif @Tobi823, @ivan-volnov, @VasiliPupkin256,
@federico-busato, @barcharcraz, @jk-jeon, @HazardyKnusperkeks, @dalboris,
@seanm, @gsjaardema, @timsong-cpp, @seanm, @frithrah, @chronoxor, @Agga,
@madmaxoft, @JurajX, @phprus and @Dani-Hub.
# 8.1.1 - 2022-01-06
- Restored ABI compatibility with version 8.0.x
(https://github.com/fmtlib/fmt/issues/2695,
https://github.com/fmtlib/fmt/pull/2696). Thanks @saraedum.
- Fixed chrono formatting on big endian systems
(https://github.com/fmtlib/fmt/issues/2698,
https://github.com/fmtlib/fmt/pull/2699).
Thanks @phprus and @xvitaly.
- Fixed a linkage error with mingw
(https://github.com/fmtlib/fmt/issues/2691,
https://github.com/fmtlib/fmt/pull/2692). Thanks @rbberger.
# 8.1.0 - 2022-01-02
- Optimized chrono formatting
(https://github.com/fmtlib/fmt/pull/2500,
https://github.com/fmtlib/fmt/pull/2537,
https://github.com/fmtlib/fmt/issues/2541,
https://github.com/fmtlib/fmt/pull/2544,
https://github.com/fmtlib/fmt/pull/2550,
https://github.com/fmtlib/fmt/pull/2551,
https://github.com/fmtlib/fmt/pull/2576,
https://github.com/fmtlib/fmt/issues/2577,
https://github.com/fmtlib/fmt/pull/2586,
https://github.com/fmtlib/fmt/pull/2591,
https://github.com/fmtlib/fmt/pull/2594,
https://github.com/fmtlib/fmt/pull/2602,
https://github.com/fmtlib/fmt/pull/2617,
https://github.com/fmtlib/fmt/issues/2628,
https://github.com/fmtlib/fmt/pull/2633,
https://github.com/fmtlib/fmt/issues/2670,
https://github.com/fmtlib/fmt/pull/2671).
Processing of some specifiers such as `%z` and `%Y` is now up to
10-20 times faster, for example on GCC 11 with libstdc++:
----------------------------------------------------------------------------
Benchmark Before After
----------------------------------------------------------------------------
FMTFormatter_z 261 ns 26.3 ns
FMTFormatterCompile_z 246 ns 11.6 ns
FMTFormatter_Y 263 ns 26.1 ns
FMTFormatterCompile_Y 244 ns 10.5 ns
----------------------------------------------------------------------------
Thanks @phprus and @toughengineer.
- Implemented subsecond formatting for chrono durations
(https://github.com/fmtlib/fmt/pull/2623). For example
([godbolt](https://godbolt.org/z/es7vWTETe)):
```c++
#include <fmt/chrono.h>
int main() {
fmt::print("{:%S}", std::chrono::milliseconds(1234));
}
```
prints \"01.234\".
Thanks @matrackif.
- Fixed handling of precision 0 when formatting chrono durations
(https://github.com/fmtlib/fmt/issues/2587,
https://github.com/fmtlib/fmt/pull/2588). Thanks @lukester1975.
- Fixed an overflow on invalid inputs in the `tm` formatter
(https://github.com/fmtlib/fmt/pull/2564). Thanks @phprus.
- Added `fmt::group_digits` that formats integers with a non-localized
digit separator (comma) for groups of three digits. For example
([godbolt](https://godbolt.org/z/TxGxG9Poq)):
```c++
#include <fmt/format.h>
int main() {
fmt::print("{} dollars", fmt::group_digits(1000000));
}
```
prints \"1,000,000 dollars\".
- Added support for faint, conceal, reverse and blink text styles
(https://github.com/fmtlib/fmt/pull/2394):
<https://user-images.githubusercontent.com/576385/147710227-c68f5317-f8fa-42c3-9123-7c4ba3c398cb.mp4>
Thanks @benit8 and @data-man.
- Added experimental support for compile-time floating point
formatting (https://github.com/fmtlib/fmt/pull/2426,
https://github.com/fmtlib/fmt/pull/2470). It is currently
limited to the header-only mode. Thanks @alexezeder.
- Added UDL-based named argument support to compile-time format string
checks (https://github.com/fmtlib/fmt/issues/2640,
https://github.com/fmtlib/fmt/pull/2649). For example
([godbolt](https://godbolt.org/z/ohGbbvonv)):
```c++
#include <fmt/format.h>
int main() {
using namespace fmt::literals;
fmt::print("{answer:s}", "answer"_a=42);
}
```
gives a compile-time error on compilers with C++20 `consteval` and
non-type template parameter support (gcc 10+) because `s` is not a
valid format specifier for an integer.
Thanks @alexezeder.
- Implemented escaping of string range elements. For example
([godbolt](https://godbolt.org/z/rKvM1vKf3)):
```c++
#include <fmt/ranges.h>
#include <vector>
int main() {
fmt::print("{}", std::vector<std::string>{"\naan"});
}
```
is now printed as:
["\naan"]
instead of:
["
aan"]
- Added an experimental `?` specifier for escaping strings.
(https://github.com/fmtlib/fmt/pull/2674). Thanks @BRevzin.
- Switched to JSON-like representation of maps and sets for
consistency with Python\'s `str.format`. For example
([godbolt](https://godbolt.org/z/seKjoY9W5)):
```c++
#include <fmt/ranges.h>
#include <map>
int main() {
fmt::print("{}", std::map<std::string, int>{{"answer", 42}});
}
```
is now printed as:
{"answer": 42}
- Extended `fmt::join` to support C++20-only ranges
(https://github.com/fmtlib/fmt/pull/2549). Thanks @BRevzin.
- Optimized handling of non-const-iterable ranges and implemented
initial support for non-const-formattable types.
- Disabled implicit conversions of scoped enums to integers that was
accidentally introduced in earlier versions
(https://github.com/fmtlib/fmt/pull/1841).
- Deprecated implicit conversion of `[const] signed char*` and
`[const] unsigned char*` to C strings.
- Deprecated `_format`, a legacy UDL-based format API
(https://github.com/fmtlib/fmt/pull/2646). Thanks @alexezeder.
- Marked `format`, `formatted_size` and `to_string` as `[[nodiscard]]`
(https://github.com/fmtlib/fmt/pull/2612). @0x8000-0000.
- Added missing diagnostic when trying to format function and member
pointers as well as objects convertible to pointers which is
explicitly disallowed
(https://github.com/fmtlib/fmt/issues/2598,
https://github.com/fmtlib/fmt/pull/2609,
https://github.com/fmtlib/fmt/pull/2610). Thanks @AlexGuteniev.
- Optimized writing to a contiguous buffer with `format_to_n`
(https://github.com/fmtlib/fmt/pull/2489). Thanks @Roman-Koshelev.
- Optimized writing to non-`char` buffers
(https://github.com/fmtlib/fmt/pull/2477). Thanks @Roman-Koshelev.
- Decimal point is now localized when using the `L` specifier.
- Improved floating point formatter implementation
(https://github.com/fmtlib/fmt/pull/2498,
https://github.com/fmtlib/fmt/pull/2499). Thanks @Roman-Koshelev.
- Fixed handling of very large precision in fixed format
(https://github.com/fmtlib/fmt/pull/2616).
- Made a table of cached powers used in FP formatting static
(https://github.com/fmtlib/fmt/pull/2509). Thanks @jk-jeon.
- Resolved a lookup ambiguity with C++20 format-related functions due
to ADL (https://github.com/fmtlib/fmt/issues/2639,
https://github.com/fmtlib/fmt/pull/2641). Thanks @mkurdej.
- Removed unnecessary inline namespace qualification
(https://github.com/fmtlib/fmt/issues/2642,
https://github.com/fmtlib/fmt/pull/2643). Thanks @mkurdej.
- Implemented argument forwarding in `format_to_n`
(https://github.com/fmtlib/fmt/issues/2462,
https://github.com/fmtlib/fmt/pull/2463). Thanks @owent.
- Fixed handling of implicit conversions in `fmt::to_string` and
format string compilation
(https://github.com/fmtlib/fmt/issues/2565).
- Changed the default access mode of files created by
`fmt::output_file` to `-rw-r--r--` for consistency with `fopen`
(https://github.com/fmtlib/fmt/issues/2530).
- Make `fmt::ostream::flush` public
(https://github.com/fmtlib/fmt/issues/2435).
- Improved C++14/17 attribute detection
(https://github.com/fmtlib/fmt/pull/2615). Thanks @AlexGuteniev.
- Improved `consteval` detection for MSVC
(https://github.com/fmtlib/fmt/pull/2559). Thanks @DanielaE.
- Improved documentation
(https://github.com/fmtlib/fmt/issues/2406,
https://github.com/fmtlib/fmt/pull/2446,
https://github.com/fmtlib/fmt/issues/2493,
https://github.com/fmtlib/fmt/issues/2513,
https://github.com/fmtlib/fmt/pull/2515,
https://github.com/fmtlib/fmt/issues/2522,
https://github.com/fmtlib/fmt/pull/2562,
https://github.com/fmtlib/fmt/pull/2575,
https://github.com/fmtlib/fmt/pull/2606,
https://github.com/fmtlib/fmt/pull/2620,
https://github.com/fmtlib/fmt/issues/2676).
Thanks @sobolevn, @UnePierre, @zhsj, @phprus, @ericcurtin and @Lounarok.
- Improved fuzzers and added a fuzzer for chrono timepoint formatting
(https://github.com/fmtlib/fmt/pull/2461,
https://github.com/fmtlib/fmt/pull/2469). @pauldreik,
- Added the `FMT_SYSTEM_HEADERS` CMake option setting which marks
{fmt}\'s headers as system. It can be used to suppress warnings
(https://github.com/fmtlib/fmt/issues/2644,
https://github.com/fmtlib/fmt/pull/2651). Thanks @alexezeder.
- Added the Bazel build system support
(https://github.com/fmtlib/fmt/pull/2505,
https://github.com/fmtlib/fmt/pull/2516). Thanks @Vertexwahn.
- Improved build configuration and tests
(https://github.com/fmtlib/fmt/issues/2437,
https://github.com/fmtlib/fmt/pull/2558,
https://github.com/fmtlib/fmt/pull/2648,
https://github.com/fmtlib/fmt/pull/2650,
https://github.com/fmtlib/fmt/pull/2663,
https://github.com/fmtlib/fmt/pull/2677).
Thanks @DanielaE, @alexezeder and @phprus.
- Fixed various warnings and compilation issues
(https://github.com/fmtlib/fmt/pull/2353,
https://github.com/fmtlib/fmt/pull/2356,
https://github.com/fmtlib/fmt/pull/2399,
https://github.com/fmtlib/fmt/issues/2408,
https://github.com/fmtlib/fmt/pull/2414,
https://github.com/fmtlib/fmt/pull/2427,
https://github.com/fmtlib/fmt/pull/2432,
https://github.com/fmtlib/fmt/pull/2442,
https://github.com/fmtlib/fmt/pull/2434,
https://github.com/fmtlib/fmt/issues/2439,
https://github.com/fmtlib/fmt/pull/2447,
https://github.com/fmtlib/fmt/pull/2450,
https://github.com/fmtlib/fmt/issues/2455,
https://github.com/fmtlib/fmt/issues/2465,
https://github.com/fmtlib/fmt/issues/2472,
https://github.com/fmtlib/fmt/issues/2474,
https://github.com/fmtlib/fmt/pull/2476,
https://github.com/fmtlib/fmt/issues/2478,
https://github.com/fmtlib/fmt/issues/2479,
https://github.com/fmtlib/fmt/issues/2481,
https://github.com/fmtlib/fmt/pull/2482,
https://github.com/fmtlib/fmt/pull/2483,
https://github.com/fmtlib/fmt/issues/2490,
https://github.com/fmtlib/fmt/pull/2491,
https://github.com/fmtlib/fmt/pull/2510,
https://github.com/fmtlib/fmt/pull/2518,
https://github.com/fmtlib/fmt/issues/2528,
https://github.com/fmtlib/fmt/pull/2529,
https://github.com/fmtlib/fmt/pull/2539,
https://github.com/fmtlib/fmt/issues/2540,
https://github.com/fmtlib/fmt/pull/2545,
https://github.com/fmtlib/fmt/pull/2555,
https://github.com/fmtlib/fmt/issues/2557,
https://github.com/fmtlib/fmt/issues/2570,
https://github.com/fmtlib/fmt/pull/2573,
https://github.com/fmtlib/fmt/pull/2582,
https://github.com/fmtlib/fmt/issues/2605,
https://github.com/fmtlib/fmt/pull/2611,
https://github.com/fmtlib/fmt/pull/2647,
https://github.com/fmtlib/fmt/issues/2627,
https://github.com/fmtlib/fmt/pull/2630,
https://github.com/fmtlib/fmt/issues/2635,
https://github.com/fmtlib/fmt/issues/2638,
https://github.com/fmtlib/fmt/issues/2653,
https://github.com/fmtlib/fmt/issues/2654,
https://github.com/fmtlib/fmt/issues/2661,
https://github.com/fmtlib/fmt/pull/2664,
https://github.com/fmtlib/fmt/pull/2684).
Thanks @DanielaE, @mwinterb, @cdacamar, @TrebledJ, @bodomartin, @cquammen,
@white238, @mmarkeloff, @palacaze, @jcelerier, @mborn-adi, @BrukerJWD,
@spyridon97, @phprus, @oliverlee, @joshessman-llnl, @akohlmey, @timkalu,
@olupton, @Acretock, @alexezeder, @andrewcorrigan, @lucpelletier and
@HazardyKnusperkeks.
# 8.0.1 - 2021-07-02
- Fixed the version number in the inline namespace
(https://github.com/fmtlib/fmt/issues/2374).
- Added a missing presentation type check for `std::string`
(https://github.com/fmtlib/fmt/issues/2402).
- Fixed a linkage error when mixing code built with clang and gcc
(https://github.com/fmtlib/fmt/issues/2377).
- Fixed documentation issues
(https://github.com/fmtlib/fmt/pull/2396,
https://github.com/fmtlib/fmt/issues/2403,
https://github.com/fmtlib/fmt/issues/2406). Thanks @mkurdej.
- Removed dead code in FP formatter (
https://github.com/fmtlib/fmt/pull/2398). Thanks @javierhonduco.
- Fixed various warnings and compilation issues
(https://github.com/fmtlib/fmt/issues/2351,
https://github.com/fmtlib/fmt/issues/2359,
https://github.com/fmtlib/fmt/pull/2365,
https://github.com/fmtlib/fmt/issues/2368,
https://github.com/fmtlib/fmt/pull/2370,
https://github.com/fmtlib/fmt/pull/2376,
https://github.com/fmtlib/fmt/pull/2381,
https://github.com/fmtlib/fmt/pull/2382,
https://github.com/fmtlib/fmt/issues/2386,
https://github.com/fmtlib/fmt/pull/2389,
https://github.com/fmtlib/fmt/pull/2395,
https://github.com/fmtlib/fmt/pull/2397,
https://github.com/fmtlib/fmt/issues/2400,
https://github.com/fmtlib/fmt/issues/2401,
https://github.com/fmtlib/fmt/pull/2407).
Thanks @zx2c4, @AidanSun05, @mattiasljungstrom, @joemmett, @erengy,
@patlkli, @gsjaardema and @phprus.
# 8.0.0 - 2021-06-21
- Enabled compile-time format string checks by default. For example
([godbolt](https://godbolt.org/z/sMxcohGjz)):
```c++
#include <fmt/core.h>
int main() {
fmt::print("{:d}", "I am not a number");
}
```
gives a compile-time error on compilers with C++20 `consteval`
support (gcc 10+, clang 11+) because `d` is not a valid format
specifier for a string.
To pass a runtime string wrap it in `fmt::runtime`:
```c++
fmt::print(fmt::runtime("{:d}"), "I am not a number");
```
- Added compile-time formatting
(https://github.com/fmtlib/fmt/pull/2019,
https://github.com/fmtlib/fmt/pull/2044,
https://github.com/fmtlib/fmt/pull/2056,
https://github.com/fmtlib/fmt/pull/2072,
https://github.com/fmtlib/fmt/pull/2075,
https://github.com/fmtlib/fmt/issues/2078,
https://github.com/fmtlib/fmt/pull/2129,
https://github.com/fmtlib/fmt/pull/2326). For example
([godbolt](https://godbolt.org/z/Mxx9d89jM)):
```c++
#include <fmt/compile.h>
consteval auto compile_time_itoa(int value) -> std::array<char, 10> {
auto result = std::array<char, 10>();
fmt::format_to(result.data(), FMT_COMPILE("{}"), value);
return result;
}
constexpr auto answer = compile_time_itoa(42);
```
Most of the formatting functionality is available at compile time
with a notable exception of floating-point numbers and pointers.
Thanks @alexezeder.
- Optimized handling of format specifiers during format string
compilation. For example, hexadecimal formatting (`"{:x}"`) is now
3-7x faster than before when using `format_to` with format string
compilation and a stack-allocated buffer
(https://github.com/fmtlib/fmt/issues/1944).
Before (7.1.3):
----------------------------------------------------------------------------
Benchmark Time CPU Iterations
----------------------------------------------------------------------------
FMTCompileOld/0 15.5 ns 15.5 ns 43302898
FMTCompileOld/42 16.6 ns 16.6 ns 43278267
FMTCompileOld/273123 18.7 ns 18.6 ns 37035861
FMTCompileOld/9223372036854775807 19.4 ns 19.4 ns 35243000
----------------------------------------------------------------------------
After (8.x):
----------------------------------------------------------------------------
Benchmark Time CPU Iterations
----------------------------------------------------------------------------
FMTCompileNew/0 1.99 ns 1.99 ns 360523686
FMTCompileNew/42 2.33 ns 2.33 ns 279865664
FMTCompileNew/273123 3.72 ns 3.71 ns 190230315
FMTCompileNew/9223372036854775807 5.28 ns 5.26 ns 130711631
----------------------------------------------------------------------------
It is even faster than `std::to_chars` from libc++ compiled with
clang on macOS:
----------------------------------------------------------------------------
Benchmark Time CPU Iterations
----------------------------------------------------------------------------
ToChars/0 4.42 ns 4.41 ns 160196630
ToChars/42 5.00 ns 4.98 ns 140735201
ToChars/273123 7.26 ns 7.24 ns 95784130
ToChars/9223372036854775807 8.77 ns 8.75 ns 75872534
----------------------------------------------------------------------------
In other cases, especially involving `std::string` construction, the
speed up is usually lower because handling format specifiers takes a
smaller fraction of the total time.
- Added the `_cf` user-defined literal to represent a compiled format
string. It can be used instead of the `FMT_COMPILE` macro
(https://github.com/fmtlib/fmt/pull/2043,
https://github.com/fmtlib/fmt/pull/2242):
```c++
#include <fmt/compile.h>
using namespace fmt::literals;
auto s = fmt::format(FMT_COMPILE("{}"), 42); // 🙁 not modern
auto s = fmt::format("{}"_cf, 42); // 🙂 modern as hell
```
It requires compiler support for class types in non-type template
parameters (a C++20 feature) which is available in GCC 9.3+.
Thanks @alexezeder.
- Format string compilation now requires `format` functions of
`formatter` specializations for user-defined types to be `const`:
```c++
template <> struct fmt::formatter<my_type>: formatter<string_view> {
template <typename FormatContext>
auto format(my_type obj, FormatContext& ctx) const { // Note const here.
// ...
}
};
```
- Added UDL-based named argument support to format string compilation
(https://github.com/fmtlib/fmt/pull/2243,
https://github.com/fmtlib/fmt/pull/2281). For example:
```c++
#include <fmt/compile.h>
using namespace fmt::literals;
auto s = fmt::format(FMT_COMPILE("{answer}"), "answer"_a = 42);
```
Here the argument named \"answer\" is resolved at compile time with
no runtime overhead. Thanks @alexezeder.
- Added format string compilation support to `fmt::print`
(https://github.com/fmtlib/fmt/issues/2280,
https://github.com/fmtlib/fmt/pull/2304). Thanks @alexezeder.
- Added initial support for compiling {fmt} as a C++20 module
(https://github.com/fmtlib/fmt/pull/2235,
https://github.com/fmtlib/fmt/pull/2240,
https://github.com/fmtlib/fmt/pull/2260,
https://github.com/fmtlib/fmt/pull/2282,
https://github.com/fmtlib/fmt/pull/2283,
https://github.com/fmtlib/fmt/pull/2288,
https://github.com/fmtlib/fmt/pull/2298,
https://github.com/fmtlib/fmt/pull/2306,
https://github.com/fmtlib/fmt/pull/2307,
https://github.com/fmtlib/fmt/pull/2309,
https://github.com/fmtlib/fmt/pull/2318,
https://github.com/fmtlib/fmt/pull/2324,
https://github.com/fmtlib/fmt/pull/2332,
https://github.com/fmtlib/fmt/pull/2340). Thanks @DanielaE.
- Made symbols private by default reducing shared library size
(https://github.com/fmtlib/fmt/pull/2301). For example
there was a \~15% reported reduction on one platform. Thanks @sergiud.
- Optimized includes making the result of preprocessing `fmt/format.h`
\~20% smaller with libstdc++/C++20 and slightly improving build
times (https://github.com/fmtlib/fmt/issues/1998).
- Added support of ranges with non-const `begin` / `end`
(https://github.com/fmtlib/fmt/pull/1953). Thanks @kitegi.
- Added support of `std::byte` and other formattable types to
`fmt::join` (https://github.com/fmtlib/fmt/issues/1981,
https://github.com/fmtlib/fmt/issues/2040,
https://github.com/fmtlib/fmt/pull/2050,
https://github.com/fmtlib/fmt/issues/2262). For example:
```c++
#include <fmt/format.h>
#include <cstddef>
#include <vector>
int main() {
auto bytes = std::vector{std::byte(4), std::byte(2)};
fmt::print("{}", fmt::join(bytes, ""));
}
```
prints \"42\".
Thanks @kamibo.
- Implemented the default format for `std::chrono::system_clock`
(https://github.com/fmtlib/fmt/issues/2319,
https://github.com/fmtlib/fmt/pull/2345). For example:
```c++
#include <fmt/chrono.h>
int main() {
fmt::print("{}", std::chrono::system_clock::now());
}
```
prints \"2021-06-18 15:22:00\" (the output depends on the current
date and time). Thanks @sunmy2019.
- Made more chrono specifiers locale independent by default. Use the
`'L'` specifier to get localized formatting. For example:
```c++
#include <fmt/chrono.h>
int main() {
std::locale::global(std::locale("ru_RU.UTF-8"));
auto monday = std::chrono::weekday(1);
fmt::print("{}\n", monday); // prints "Mon"
fmt::print("{:L}\n", monday); // prints "пн"
}
```
- Improved locale handling in chrono formatting
(https://github.com/fmtlib/fmt/issues/2337,
https://github.com/fmtlib/fmt/pull/2349,
https://github.com/fmtlib/fmt/pull/2350). Thanks @phprus.
- Deprecated `fmt/locale.h` moving the formatting functions that take
a locale to `fmt/format.h` (`char`) and `fmt/xchar` (other
overloads). This doesn\'t introduce a dependency on `<locale>` so
there is virtually no compile time effect.
- Deprecated an undocumented `format_to` overload that takes
`basic_memory_buffer`.
- Made parameter order in `vformat_to` consistent with `format_to`
(https://github.com/fmtlib/fmt/issues/2327).
- Added support for time points with arbitrary durations
(https://github.com/fmtlib/fmt/issues/2208). For example:
```c++
#include <fmt/chrono.h>
int main() {
using tp = std::chrono::time_point<
std::chrono::system_clock, std::chrono::seconds>;
fmt::print("{:%S}", tp(std::chrono::seconds(42)));
}
```
prints \"42\".
- Formatting floating-point numbers no longer produces trailing zeros
by default for consistency with `std::format`. For example:
```c++
#include <fmt/core.h>
int main() {
fmt::print("{0:.3}", 1.1);
}
```
prints \"1.1\". Use the `'#'` specifier to keep trailing zeros.
- Dropped a limit on the number of elements in a range and replaced
`{}` with `[]` as range delimiters for consistency with Python\'s
`str.format`.
- The `'L'` specifier for locale-specific numeric formatting can now
be combined with presentation specifiers as in `std::format`. For
example:
```c++
#include <fmt/core.h>
#include <locale>
int main() {
std::locale::global(std::locale("fr_FR.UTF-8"));
fmt::print("{0:.2Lf}", 0.42);
}
```
prints \"0,42\". The deprecated `'n'` specifier has been removed.
- Made the `0` specifier ignored for infinity and NaN
(https://github.com/fmtlib/fmt/issues/2305,
https://github.com/fmtlib/fmt/pull/2310). Thanks @Liedtke.
- Made the hexfloat formatting use the right alignment by default
(https://github.com/fmtlib/fmt/issues/2308,
https://github.com/fmtlib/fmt/pull/2317). Thanks @Liedtke.
- Removed the deprecated numeric alignment (`'='`). Use the `'0'`
specifier instead.
- Removed the deprecated `fmt/posix.h` header that has been replaced
with `fmt/os.h`.
- Removed the deprecated `format_to_n_context`, `format_to_n_args` and
`make_format_to_n_args`. They have been replaced with
`format_context`, `` format_args` and ``make_format_args\`\`
respectively.
- Moved `wchar_t`-specific functions and types to `fmt/xchar.h`. You
can define `FMT_DEPRECATED_INCLUDE_XCHAR` to automatically include
`fmt/xchar.h` from `fmt/format.h` but this will be disabled in the
next major release.
- Fixed handling of the `'+'` specifier in localized formatting
(https://github.com/fmtlib/fmt/issues/2133).
- Added support for the `'s'` format specifier that gives textual
representation of `bool`
(https://github.com/fmtlib/fmt/issues/2094,
https://github.com/fmtlib/fmt/pull/2109). For example:
```c++
#include <fmt/core.h>
int main() {
fmt::print("{:s}", true);
}
```
prints \"true\". Thanks @powercoderlol.
- Made `fmt::ptr` work with function pointers
(https://github.com/fmtlib/fmt/pull/2131). For example:
```c++
#include <fmt/format.h>
int main() {
fmt::print("My main: {}\n", fmt::ptr(main));
}
```
Thanks @mikecrowe.
- The undocumented support for specializing `formatter` for pointer
types has been removed.
- Fixed `fmt::formatted_size` with format string compilation
(https://github.com/fmtlib/fmt/pull/2141,
https://github.com/fmtlib/fmt/pull/2161). Thanks @alexezeder.
- Fixed handling of empty format strings during format string
compilation (https://github.com/fmtlib/fmt/issues/2042):
```c++
auto s = fmt::format(FMT_COMPILE(""));
```
Thanks @alexezeder.
- Fixed handling of enums in `fmt::to_string`
(https://github.com/fmtlib/fmt/issues/2036).
- Improved width computation
(https://github.com/fmtlib/fmt/issues/2033,
https://github.com/fmtlib/fmt/issues/2091). For example:
```c++
#include <fmt/core.h>
int main() {
fmt::print("{:-<10}{}\n", "你好", "世界");
fmt::print("{:-<10}{}\n", "hello", "world");
}
```
prints
![](https://user-images.githubusercontent.com/576385/119840373-cea3ca80-beb9-11eb-91e0-54266c48e181.png)
on a modern terminal.
- The experimental fast output stream (`fmt::ostream`) is now
truncated by default for consistency with `fopen`
(https://github.com/fmtlib/fmt/issues/2018). For example:
```c++
#include <fmt/os.h>
int main() {
fmt::ostream out1 = fmt::output_file("guide");
out1.print("Zaphod");
out1.close();
fmt::ostream out2 = fmt::output_file("guide");
out2.print("Ford");
}
```
writes \"Ford\" to the file \"guide\". To preserve the old file
content if any pass `fmt::file::WRONLY | fmt::file::CREATE` flags to
`fmt::output_file`.
- Fixed moving of `fmt::ostream` that holds buffered data
(https://github.com/fmtlib/fmt/issues/2197,
https://github.com/fmtlib/fmt/pull/2198). Thanks @vtta.
- Replaced the `fmt::system_error` exception with a function of the
same name that constructs `std::system_error`
(https://github.com/fmtlib/fmt/issues/2266).
- Replaced the `fmt::windows_error` exception with a function of the
same name that constructs `std::system_error` with the category
returned by `fmt::system_category()`
(https://github.com/fmtlib/fmt/issues/2274,
https://github.com/fmtlib/fmt/pull/2275). The latter is
similar to `std::system_category` but correctly handles UTF-8.
Thanks @phprus.
- Replaced `fmt::error_code` with `std::error_code` and made it
formattable (https://github.com/fmtlib/fmt/issues/2269,
https://github.com/fmtlib/fmt/pull/2270,
https://github.com/fmtlib/fmt/pull/2273). Thanks @phprus.
- Added speech synthesis support
(https://github.com/fmtlib/fmt/pull/2206).
- Made `format_to` work with a memory buffer that has a custom
allocator (https://github.com/fmtlib/fmt/pull/2300).
Thanks @voxmea.
- Added `Allocator::max_size` support to `basic_memory_buffer`.
(https://github.com/fmtlib/fmt/pull/1960). Thanks @phprus.
- Added wide string support to `fmt::join`
(https://github.com/fmtlib/fmt/pull/2236). Thanks @crbrz.
- Made iterators passed to `formatter` specializations via a format
context satisfy C++20 `std::output_iterator` requirements
(https://github.com/fmtlib/fmt/issues/2156,
https://github.com/fmtlib/fmt/pull/2158,
https://github.com/fmtlib/fmt/issues/2195,
https://github.com/fmtlib/fmt/pull/2204). Thanks @randomnetcat.
- Optimized the `printf` implementation
(https://github.com/fmtlib/fmt/pull/1982,
https://github.com/fmtlib/fmt/pull/1984,
https://github.com/fmtlib/fmt/pull/2016,
https://github.com/fmtlib/fmt/pull/2164).
Thanks @rimathia and @moiwi.
- Improved detection of `constexpr` `char_traits`
(https://github.com/fmtlib/fmt/pull/2246,
https://github.com/fmtlib/fmt/pull/2257). Thanks @phprus.
- Fixed writing to `stdout` when it is redirected to `NUL` on Windows
(https://github.com/fmtlib/fmt/issues/2080).
- Fixed exception propagation from iterators
(https://github.com/fmtlib/fmt/issues/2097).
- Improved `strftime` error handling
(https://github.com/fmtlib/fmt/issues/2238,
https://github.com/fmtlib/fmt/pull/2244). Thanks @yumeyao.
- Stopped using deprecated GCC UDL template extension.
- Added `fmt/args.h` to the install target
(https://github.com/fmtlib/fmt/issues/2096).
- Error messages are now passed to assert when exceptions are disabled
(https://github.com/fmtlib/fmt/pull/2145). Thanks @NobodyXu.
- Added the `FMT_MASTER_PROJECT` CMake option to control build and
install targets when {fmt} is included via `add_subdirectory`
(https://github.com/fmtlib/fmt/issues/2098,
https://github.com/fmtlib/fmt/pull/2100).
Thanks @randomizedthinking.
- Improved build configuration
(https://github.com/fmtlib/fmt/pull/2026,
https://github.com/fmtlib/fmt/pull/2122).
Thanks @luncliff and @ibaned.
- Fixed various warnings and compilation issues
(https://github.com/fmtlib/fmt/issues/1947,
https://github.com/fmtlib/fmt/pull/1959,
https://github.com/fmtlib/fmt/pull/1963,
https://github.com/fmtlib/fmt/pull/1965,
https://github.com/fmtlib/fmt/issues/1966,
https://github.com/fmtlib/fmt/pull/1974,
https://github.com/fmtlib/fmt/pull/1975,
https://github.com/fmtlib/fmt/pull/1990,
https://github.com/fmtlib/fmt/issues/2000,
https://github.com/fmtlib/fmt/pull/2001,
https://github.com/fmtlib/fmt/issues/2002,
https://github.com/fmtlib/fmt/issues/2004,
https://github.com/fmtlib/fmt/pull/2006,
https://github.com/fmtlib/fmt/pull/2009,
https://github.com/fmtlib/fmt/pull/2010,
https://github.com/fmtlib/fmt/issues/2038,
https://github.com/fmtlib/fmt/issues/2039,
https://github.com/fmtlib/fmt/issues/2047,
https://github.com/fmtlib/fmt/pull/2053,
https://github.com/fmtlib/fmt/issues/2059,
https://github.com/fmtlib/fmt/pull/2065,
https://github.com/fmtlib/fmt/pull/2067,
https://github.com/fmtlib/fmt/pull/2068,
https://github.com/fmtlib/fmt/pull/2073,
https://github.com/fmtlib/fmt/issues/2103,
https://github.com/fmtlib/fmt/issues/2105,
https://github.com/fmtlib/fmt/pull/2106,
https://github.com/fmtlib/fmt/pull/2107,
https://github.com/fmtlib/fmt/issues/2116,
https://github.com/fmtlib/fmt/pull/2117,
https://github.com/fmtlib/fmt/issues/2118,
https://github.com/fmtlib/fmt/pull/2119,
https://github.com/fmtlib/fmt/issues/2127,
https://github.com/fmtlib/fmt/pull/2128,
https://github.com/fmtlib/fmt/issues/2140,
https://github.com/fmtlib/fmt/issues/2142,
https://github.com/fmtlib/fmt/pull/2143,
https://github.com/fmtlib/fmt/pull/2144,
https://github.com/fmtlib/fmt/issues/2147,
https://github.com/fmtlib/fmt/issues/2148,
https://github.com/fmtlib/fmt/issues/2149,
https://github.com/fmtlib/fmt/pull/2152,
https://github.com/fmtlib/fmt/pull/2160,
https://github.com/fmtlib/fmt/issues/2170,
https://github.com/fmtlib/fmt/issues/2175,
https://github.com/fmtlib/fmt/issues/2176,
https://github.com/fmtlib/fmt/pull/2177,
https://github.com/fmtlib/fmt/issues/2178,
https://github.com/fmtlib/fmt/pull/2179,
https://github.com/fmtlib/fmt/issues/2180,
https://github.com/fmtlib/fmt/issues/2181,
https://github.com/fmtlib/fmt/pull/2183,
https://github.com/fmtlib/fmt/issues/2184,
https://github.com/fmtlib/fmt/issues/2185,
https://github.com/fmtlib/fmt/pull/2186,
https://github.com/fmtlib/fmt/pull/2187,
https://github.com/fmtlib/fmt/pull/2190,
https://github.com/fmtlib/fmt/pull/2192,
https://github.com/fmtlib/fmt/pull/2194,
https://github.com/fmtlib/fmt/pull/2205,
https://github.com/fmtlib/fmt/issues/2210,
https://github.com/fmtlib/fmt/pull/2211,
https://github.com/fmtlib/fmt/pull/2215,
https://github.com/fmtlib/fmt/pull/2216,
https://github.com/fmtlib/fmt/pull/2218,
https://github.com/fmtlib/fmt/pull/2220,
https://github.com/fmtlib/fmt/issues/2228,
https://github.com/fmtlib/fmt/pull/2229,
https://github.com/fmtlib/fmt/pull/2230,
https://github.com/fmtlib/fmt/issues/2233,
https://github.com/fmtlib/fmt/pull/2239,
https://github.com/fmtlib/fmt/issues/2248,
https://github.com/fmtlib/fmt/issues/2252,
https://github.com/fmtlib/fmt/pull/2253,
https://github.com/fmtlib/fmt/pull/2255,
https://github.com/fmtlib/fmt/issues/2261,
https://github.com/fmtlib/fmt/issues/2278,
https://github.com/fmtlib/fmt/issues/2284,
https://github.com/fmtlib/fmt/pull/2287,
https://github.com/fmtlib/fmt/pull/2289,
https://github.com/fmtlib/fmt/pull/2290,
https://github.com/fmtlib/fmt/pull/2293,
https://github.com/fmtlib/fmt/issues/2295,
https://github.com/fmtlib/fmt/pull/2296,
https://github.com/fmtlib/fmt/pull/2297,
https://github.com/fmtlib/fmt/issues/2311,
https://github.com/fmtlib/fmt/pull/2313,
https://github.com/fmtlib/fmt/pull/2315,
https://github.com/fmtlib/fmt/issues/2320,
https://github.com/fmtlib/fmt/pull/2321,
https://github.com/fmtlib/fmt/pull/2323,
https://github.com/fmtlib/fmt/issues/2328,
https://github.com/fmtlib/fmt/pull/2329,
https://github.com/fmtlib/fmt/pull/2333,
https://github.com/fmtlib/fmt/pull/2338,
https://github.com/fmtlib/fmt/pull/2341).
Thanks @darklukee, @fagg, @killerbot242, @jgopel, @yeswalrus, @Finkman,
@HazardyKnusperkeks, @dkavolis, @concatime, @chronoxor, @summivox, @yNeo,
@Apache-HB, @alexezeder, @toojays, @Brainy0207, @vadz, @imsherlock, @phprus,
@white238, @yafshar, @BillyDonahue, @jstaahl, @denchat, @DanielaE,
@ilyakurdyukov, @ilmai, @JessyDL, @sergiud, @mwinterb, @sven-herrmann,
@jmelas, @twoixter, @crbrz and @upsj.
- Improved documentation
(https://github.com/fmtlib/fmt/issues/1986,
https://github.com/fmtlib/fmt/pull/2051,
https://github.com/fmtlib/fmt/issues/2057,
https://github.com/fmtlib/fmt/pull/2081,
https://github.com/fmtlib/fmt/issues/2084,
https://github.com/fmtlib/fmt/pull/2312).
Thanks @imba-tjd, @0x416c69 and @mordante.
- Continuous integration and test improvements
(https://github.com/fmtlib/fmt/issues/1969,
https://github.com/fmtlib/fmt/pull/1991,
https://github.com/fmtlib/fmt/pull/2020,
https://github.com/fmtlib/fmt/pull/2110,
https://github.com/fmtlib/fmt/pull/2114,
https://github.com/fmtlib/fmt/issues/2196,
https://github.com/fmtlib/fmt/pull/2217,
https://github.com/fmtlib/fmt/pull/2247,
https://github.com/fmtlib/fmt/pull/2256,
https://github.com/fmtlib/fmt/pull/2336,
https://github.com/fmtlib/fmt/pull/2346).
Thanks @jgopel, @alexezeder and @DanielaE.
The change log for versions 0.8.0 - 7.1.3 is available [here](
doc/ChangeLog-old.md).
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