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Showing content from https://timsong-cpp.github.io/cppwp/n4659/fs.op.canonical below:

[fs.op.canonical]

30 Input/output library [input.output] 30.10 File systems [filesystems] 30.10.34 Filesystem operation functions [fs.op.funcs] 30.10.34.2 Canonical [fs.op.canonical]

path canonical(const path& p, const path& base = current_path()); path canonical(const path& p, error_code& ec); path canonical(const path& p, const path& base, error_code& ec);

Effects: Converts p, which must exist, to an absolute path that has no symbolic link, dot, or dot-dot elements in its pathname in the generic format.

Returns: A path that refers to the same file system object as absolute(p, base). For the overload without a base argument, base is current_­path(). Signatures with argument ec return path() if an error occurs.

Remarks: !exists(p) is an error.


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