When compiling format.cc or when using fmt::format inside other projects, MSVC reports a C4355 for

examplary compiler output

format.h(2148,1): error C4355: 'this': used in base member initializer list (compiling source file format.cc)

For our own projects we treat this warning as error.

I would like to suppress the warning inside the format.h file and can prepare a pull request for the required change.