30 Input/output library [input.output]

30.11 File systems [filesystems]

30.11.14 Filesystem operation functions [fs.op.funcs]

30.11.14.39 Weakly canonical [fs.op.weakly_canonical]

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path weakly_canonical(const path& p); path weakly_canonical(const path& p, error_code& ec);
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Returns: p with symlinks resolved and the result normalized ([fs.path.generic]).
2
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Effects: Using status(p) or status(p, ec), respectively, to determine existence, return a path composed by operator/= from the result of calling canonical() with a path argument composed of the leading elements of p that exist, if any, followed by the elements of p that do not exist, if any.
For the first form, canonical() is called without an error_­code argument.
For the second form, canonical() is called with ec as an error_­code argument, and path() is returned at the first error occurrence, if any.
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Postconditions: The returned path is in normal form ([fs.path.generic]).
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Remarks: Implementations should avoid unnecessary normalization such as when canonical has already been called on the entirety of p.
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Throws: As specified in [fs.err.report].