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lines changed Original file line number Diff line number Diff line change @@ -1708,7 +1708,14 @@ pub fn read_link<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> {
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/// and the `CreateFile` and `GetFinalPathNameByHandle` functions on Windows.
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/// Note that, this [may change in the future][changes].
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///
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+ /// On Windows, this converts the path to use [extended length path][path]
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+ /// syntax, which allows your program to use longer path names, but means you
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+ /// can only join backslash-delimited paths to it, and it may be incompatible
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+ /// with other applications (if passed to the application on the command-line,
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+ /// or written to a file another application may read).
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+ ///
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/// [changes]: ../io/index.html#platform-specific-behavior
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+ /// [path]: https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx#maxpath
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///
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/// # Errors
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///
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