fmtlib

fmtlib/fmt

A modern formatting library

12 good first / help-wanted issues · C++ · last activity Sep 25, 2026

25.8K stars 3.1K forks 25.8K watchers C++ MIT License
c-plus-plus chrono cpp cross-platform floating-point formatting multiplatform output performance printf ranges unicode
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12 Open Issues Need Help Last updated: Sep 25, 2026

Open Issues Need Help

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FMT_COMPILE fails to format std::array 18 days ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
Formatting std::exception_ptr:s 4 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
unusual warnings in gcc 16 with LTO 4 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
12.2.0 fails to build with old CMake 3.15.1 4 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
`export(` should not be scoped by `FMT_INSTALL` 4 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
Ambiguous formatter<std::optional<T>> between fmt/std.h and fmt/ranges.h on C++26 (P3168R2) 6 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
Enable module test 8 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
Cannot suppress range formatter when type has a container_type member type. 9 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
Consider updating the Android Gradle Plugin version 9 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
`printf` `*` precision spec issue with positional arguments 10 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
Missing named arguments do not cause compilation error when using FMT_COMPILE 10 months ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode
std-test fails on clang-cl + libc++ about 1 year ago
help wanted
fmtlib/fmt
25.8K

A modern formatting library

C++
#c-plus-plus#chrono#cpp#cross-platform#floating-point#formatting#multiplatform#output#performance#printf#ranges#unicode