Question about using custom error_code/fmt::system_error in C++11

[phprus]

Tell me please why {fmt} uses its own implementation of int error_code and fmt::system_error/fmt::windows_error instead of std::error_code and std::system_error from C++11 standard?

[vitaut]

fmt::system_error and fmt::windows_error predate C++11 requirement. We could probably migrate to std::system_error now.

[vitaut]

Custom exception classes are gone now. Thanks for the suggestion.

[phprus]

Maybe need a replace fmt::error_code to std::error_code?

https://github.com/fmtlib/fmt/blob/master/include/fmt/os.h#L122
https://github.com/fmtlib/fmt/compare/cleanup#diff-9fb4e28ec2b9c93ff34b557433378a7f22ebdef90a692bf372896f18347afa0bR72

[vitaut]

Maybe