From Jason Turner

[fs.op.copy_symlink]

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+ #### Copy symlink <a id="fs.op.copy_symlink">[[fs.op.copy_symlink]]</a>
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+
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+ ``` cpp
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+ void copy_symlink(const path& existing_symlink, const path& new_symlink);
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+ void copy_symlink(const path& existing_symlink, const path& new_symlink,
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+ error_code& ec) noexcept;
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+ ```
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+
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+ *Effects:* Equivalent to
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+ *`function`*`(read_symlink(existing_symlink), new_symlink)` or
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+ *`function`*`(read_symlink(existing_symlink, ec), new_symlink, ec)`,
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+ respectively, where in each case *`function`* is `create_symlink` or
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+ `create_directory_symlink` as appropriate.
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+
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+ *Throws:* As specified in  [[fs.err.report]].
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+