No method matching isdirpath(::PosixPath)?

[singularitti]

The function isdirpath is not extened on AbstractPaths. So the following code won't work:

julia> cwd() |> isdirpath
ERROR: MethodError: no method matching isdirpath(::PosixPath)
Closest candidates are:
  isdirpath(::String) at path.jl:117
  isdirpath(::AbstractString) at path.jl:552
Stacktrace:
 [1] |>(x::PosixPath, f::typeof(isdirpath))
   @ Base ./operators.jl:858
 [2] top-level scope
   @ REPL[11]:1

[rofinn]

That's because the current isdirpath is awkward and a kinda pointless function. There's no clear definition of what it should return for various filesystems. Whatisdirpath returns doesn't have any bearing on what isdir(fp) returns, which is what I think most people care about? I think in order for that to be useful we'd need to update the Filesystem API to consistently return a valid isdirpath whenever it returns a directory (e.g., splitdir, homedir, pwd). If we did that then I'd consider adding that here, and possibly unifying some of the logic from AWSS3.S3Path.