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Also mention that where possible, `hard_link` does not follow symlinks.
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POSIX leaves it implementation-defined whether `link` follows symlinks.
In practice, for example, on Linux it does not and on FreeBSD it does.
So, switch to `linkat`, so that we can pick a behavior rather than
depending on OS defaults.
Pick the option to not follow symlinks. This is somewhat arbitrary, but
seems the less surprising choice because hard linking is a very
low-level feature which requires the source and destination to be on
the same mounted filesystem, and following a symbolic link could end
up in a different mounted filesystem.
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- Use intra-doc links for `std::io` in `std::fs`
- Use intra-doc links for File::read in unix/ext/fs.rs
- Remove explicit intra-doc links for `true` in `net/addr.rs`
- Use intra-doc links in alloc/src/sync.rs
- Use intra-doc links in src/ascii.rs
- Switch to intra-doc links in alloc/rc.rs
- Use intra-doc links in core/pin.rs
- Use intra-doc links in std/prelude
- Use shorter links in `std/fs.rs`
`io` is already in scope.
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Also doing fmt inplace as requested.
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clarify documentation of remove_dir errors
remove_dir will error if the path doesn't exist or isn't a directory.
It's useful to clarify that this is "remove dir or fail" not "remove dir
if it exists".
I don't think this belongs in the title. "Removes an existing, empty
directory" is strangely worded-- there's no such thing as a non-existing
directory. Better to just say explicitly it will return an error.
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remove_dir will error if the path doesn't exist or isn't a directory.
It's useful to clarify that this is "remove dir or fail" not "remove dir
if it exists".
I don't think this belongs in the title. "Removes an existing, empty
directory" is strangely worded-- there's no such thing as a non-existing
directory. Better to just say explicitly it will return an error.
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Mention that absence of file causes an error
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