As discussed here: https://github.com/uutils/coreutils/pull/2361
the group IDs returned for GNU's 'group' and GNU's 'id --groups'
starts with the effective group ID.
This implements a wrapper for `entris::get_groups()` which mimics
GNU's behaviour.
* add tests for `id`
* add tests for `groups`
* fix `id --groups --real` to no longer ignore `--real`
consistent
* add tests for each flag that takes NUM/SIZE arguments
* fix bug in tail where 'quiet' and 'verbose' flags did not override each other POSIX style
Most of these changes were sourced from mv's existing backup control
implementation. A later commit will update the mv utility to use this
new share backup control.
Add some abstractions to simplify the `rbuf_but_last_n_lines()`
function, which implements the "take all but the last `n` lines"
functionality of the `head` program. This commit adds
- `RingBuffer`, a fixed-size ring buffer,
- `ZLines`, an iterator over zero-terminated "lines",
- `TakeAllBut`, an iterator over all but the last `n` elements of an
iterator.
These three together make the implementation of
`rbuf_but_last_n_lines()` concise.
Change the behavior of `uucore::fs::canonicalize()` when `can_mode` is
`CanonicalizeMode::None` so that it does not attempt to resolve the
final component if it is a symbolic link. This matches the behavior of
the function for the non-final components of a path when `can_mode` is
`None`.
A lot of tests depend on GNU's coreutils to be installed in order
to obtain reference values during testing.
In these cases testing is limited to `target_os = linux`.
This PR installs GNU's coreutils on "github actions" and adjusts the
tests for `who`, `stat` and `pinky` in order to be compatible with macOS.
* `brew install coreutils` (prefix is 'g', e.g. `gwho`, `gstat`, etc.
* switch paths for testing to something that's available on both OSs,
e.g. `/boot` -> `/bin`, etc.
* switch paths for testing to the macOS equivalent,
e.g. `/dev/pts/ptmx` -> `/dev/ptmx`, etc.
* exclude paths when no equivalent is available,
e.g. `/proc`, `/etc/fstab`, etc.
* refactor tests to make better use of the testing API
* fix a warning in utmpx.rs to print to stderr instead of stdout
* fix long_usage text in `who`
* fix minor output formatting in `stat`
* the `expected_result` function should be refactored
to reduce duplicate code
* more tests should be adjusted to not only run on `target_os = linux`
