I believe boost::filesystem was at least one of the "source" libraries used to design std::filesystem for C++17.
How similar are they? If very similar, what are the known gotchas and incompatibilities? If not, where are they similar?
This is in the context of implementing something with std::filesystem, std::experimental::filesystem or boost::filesystem, and wanting to know the likely scope of efforts required if we switch libraries (say, if one discovers that the std library on a particular platform is inadequate).
This is not a request for an alternative library recommendation.
