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Without this canonicalisation, if the directory is a symbolic link to
another directory, later at `reorient_target_path` [1], File and path
argument look like:
- self: File {
name: "."
ext: None
path: "/tmp/test2"
metadata: {...}
parent_dir: Some({
contents: vec![]
path: "/tmp/test2"
})
is_all_all: true
}
- path: "test1"
...where /tmp/test2 is a symlink to /tmp/test1 and command being used is
`exa -laa /tmp/test2`.
So the result of `dir.join(&*path)` becomes `/tmp/test2/test1`, which
doesn't exist.
The canonicalisation also makes the behaviours of `exa -laa /tmp/test2`
and `exa -laa /tmp/test2/` consistent, where `.` is not treated as a
symlink in either case. This is a bit different from coreutils `ls`
though.
Closes #952.
[1] https://github.com/ogham/exa/blob/42659f93456d9ff7cc1096cbd84d778ede26d76e/src/fs/file.rs#L215-L217
cafkafk
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ogham/exa#1018