compilation error with filesystem path in tuple and join (msvc)

[reder2000]

Hi, I have a strange compiler error when printing a path in a tuple with join.
The error does not occur if I format the path somewhere before (so I have a workaround)
This error pops up for msvc, msvc-clang and weirdly for msys2-mingw64, but not for linux-gcc.
Here's a link goldbolt

[vitaut]

Should be fixed in e0748e6. Thanks for reporting.

[reder2000]

Thanks for fixing it. Looking at the fix, this is arcane!