Odd wording it docs for shutil.move?

[Grant Edwards]

At https://docs.python.org/2/library/shutil.html it says:

 shutil.move(src, dst)

    Recursively move a file or directory (src) to another location
    (dst).

    [...]

    If the destination is on the current filesystem, then os.rename()
    is used. Otherwise, src is copied (using shutil.copy2()) to dst
    and then removed.

What does the current filesystem have to do with anything?

Surely, what matters is whether <src> and <dst> are on the same
filesystem?

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