fmtlib/fmt 10.2.0

on GitHub

Added support for the %j specifier (the number of days) for std::chrono::duration (#3643, #3732). Thanks @intelfx.

Added support for the chrono suffix for days and changed the suffix for minutes from "m" to the correct "min" (#3662, #3664). For example (godbolt):

#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 (#3725, #3727). Thanks @cschreib.

Added a formatter for std::source_location (#3730). For example (godbolt):

#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 (#3660). For example (godbolt):

#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:

#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 (#3715, #3729). For example:

#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 (#3739). Thanks @tchaikov.

Fixed formatting of invalid UTF-8 with precision (#3284).

Fixed an inconsistency between fmt::to_string and fmt::format (#3684).

Disallowed unsafe uses of fmt::styled (#3625):

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 (#3706).

Disallowed the c specifier for bool (#3726, #3734). Thanks @js324.

Made the default formatting unlocalized in fmt::ostream_formatter for consistency with the rest of the library (#3460).

Fixed localized formatting in bases other than decimal (#3693, #3750). Thanks @js324.

Fixed a performance regression in experimental fmt::ostream::print (#3674).

Added synchronization with the underlying output stream when writing to the Windows console (#3668, #3688, #3689). Thanks @Roman-Koshelev and @dimztimz.

Changed to only export format_error when {fmt} is built as a shared library (#3626, #3627). Thanks @phprus.

Made fmt::streamed constexpr. (#3650). Thanks @muggenhor.

Enabled consteval on older versions of MSVC (#3757). Thanks @phprus.

Added an option to build without wchar_t support on Windows (#3631, #3636). Thanks @glebm.

Improved build and CI configuration (#3679, #3701, #3702, #3749). Thanks @jcar87, @pklima and @tchaikov.

Fixed various warnings, compilation and test issues (#3607, #3610, #3624, #3630, #3634, #3638, #3645, #3646, #3647, #3652, #3654, #3663, #3670, #3680, #3694, #3695, #3699, #3705, #3710, #3712, #3713, #3714, #3716, #3723, #3738, #3740, #3741, #3743, #3745, #3747, #3748, #3751, #3754, #3755, #3760, #3762, #3763, #3764, #3774, #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 (#2086, #3637, #3642, #3653, #3655, #3661, #3673, #3677, #3737, #3742, #3744). Thanks @idzm, @perlun, @joycebrum, @fennewald, @reinhardt1053, @GeorgeLS.

Updated CI dependencies (#3615, #3622, #3623, #3666, #3696, #3697, #3759, #3782).