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# Description
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Today i saw in the general discord channel someone ask what is the
nushell equivalent of `whereis` or `get-command`. I wanted to tell the
user to use our great search via F1 but then I realized that typing in
`whereis` or `get-command` wouldn't really find you something. So I
added these two search terms.
# User-Facing Changes
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None.
# Tests + Formatting
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tests for the standard library
> **Note**
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I don't think that really needs testing here :D
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# Description
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This PR adds type checking of all command input types at run-time.
Generally, these errors should be caught by the parser, but sometimes we
can't know the type of a value at parse-time. The simplest example is
using the `echo` command, which has an output type of `any`, so
prefixing a literal with `echo` will bypass parse-time type checking.
Before this PR, each command has to individually check its input types.
This can result in scenarios where the input/output types don't match
the actual command behavior. This can cause valid usage with an
non-`any` type to become a parse-time error if a command is missing that
type in its pipeline input/output (`drop nth` and `history import` do
this before this PR). Alternatively, a command may not list a type in
its input/output types, but doesn't actually reject that type in its
code, which can have unintended side effects (`get` does this on an
empty pipeline input, and `sort` used to before #13154).
After this PR, the type of the pipeline input is checked to ensure it
matches one of the input types listed in the proceeding command's
input/output types. While each of the issues in the "before this PR"
section could be addressed with each command individually, this PR
solves this issue for _all_ commands.
**This will likely cause some breakage**, as some commands have
incorrect input/output types, and should be adjusted. Also, some scripts
may have erroneous usage of commands. In writing this PR, I discovered
that `toolkit.nu` was passing `null` values to `str join`, which doesn't
accept nothing types (if folks think it should, we can adjust it in this
PR or in a different PR). I found some issues in the standard library
and its tests. I also found that carapace's vendor script had an
incorrect chaining of `get -i`:
```nushell
let expanded_alias = (scope aliases | where name == $spans.0 | get -i 0 | get -i expansion)
```
Before this PR, if the `get -i 0` ever actually did evaluate to `null`,
the second `get` invocation would error since `get` doesn't operate on
`null` values. After this PR, this is immediately a run-time error,
alerting the user to the problematic code. As a side note, we'll need to
PR this fix (`get -i 0 | get -i expansion` -> `get -i 0.expansion`) to
carapace.
A notable exception to the type checking is commands with input type of
`nothing -> <type>`. In this case, any input type is allowed. This
allows piping values into the command without an error being thrown. For
example, `123 | echo $in` would be an error without this exception.
Additionally, custom types bypass type checking (I believe this also
happens during parsing, but not certain)
I added a `is_subtype` method to `Value` and `PipelineData`. It
functions slightly differently than `get_type().is_subtype()`, as noted
in the doccomments. Notably, it respects structural typing of lists and
tables. For example, the type of a value `[{a: 123} {a: 456, b: 789}]`
is a subtype of `table<a: int>`, whereas the type returned by
`Value::get_type` is a `list<any>`. Similarly, `PipelineData` has some
special handling for `ListStream`s and `ByteStream`s. The latter was
needed for this PR to work properly with external commands.
Here's some examples.
Before:
```nu
1..2 | drop nth 1
Error: nu::parser::input_type_mismatch
× Command does not support range input.
╭─[entry #9:1:8]
1 │ 1..2 | drop nth 1
· ────┬───
· ╰── command doesn't support range input
╰────
echo 1..2 | drop nth 1
# => ╭───┬───╮
# => │ 0 │ 1 │
# => ╰───┴───╯
```
After this PR, I've adjusted `drop nth`'s input/output types to accept
range input.
Before this PR, zip accepted any value despite not being listed in its
input/output types. This caused different behavior depending on if you
triggered a parse error or not:
```nushell
1 | zip [2]
# => Error: nu::parser::input_type_mismatch
# =>
# => × Command does not support int input.
# => ╭─[entry #3:1:5]
# => 1 │ 1 | zip [2]
# => · ─┬─
# => · ╰── command doesn't support int input
# => ╰────
echo 1 | zip [2]
# => ╭───┬───────────╮
# => │ 0 │ ╭───┬───╮ │
# => │ │ │ 0 │ 1 │ │
# => │ │ │ 1 │ 2 │ │
# => │ │ ╰───┴───╯ │
# => ╰───┴───────────╯
```
After this PR, it works the same in both cases. For cases like this, if
we do decide we want `zip` or other commands to accept any input value,
then we should explicitly add that to the input types.
```nushell
1 | zip [2]
# => Error: nu::parser::input_type_mismatch
# =>
# => × Command does not support int input.
# => ╭─[entry #3:1:5]
# => 1 │ 1 | zip [2]
# => · ─┬─
# => · ╰── command doesn't support int input
# => ╰────
echo 1 | zip [2]
# => Error: nu:🐚:only_supports_this_input_type
# =>
# => × Input type not supported.
# => ╭─[entry #14:2:6]
# => 2 │ echo 1 | zip [2]
# => · ┬ ─┬─
# => · │ ╰── only list<any> and range input data is supported
# => · ╰── input type: int
# => ╰────
```
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
**Breaking change**: The type of a command's input is now checked
against the input/output types of that command at run-time. While these
errors should mostly be caught at parse-time, in cases where they can't
be detected at parse-time they will be caught at run-time instead. This
applies to both internal commands and custom commands.
Example function and corresponding parse-time error (same before and
after PR):
```nushell
def foo []: int -> nothing {
print $"my cool int is ($in)"
}
1 | foo
# => my cool int is 1
"evil string" | foo
# => Error: nu::parser::input_type_mismatch
# =>
# => × Command does not support string input.
# => ╭─[entry #16:1:17]
# => 1 │ "evil string" | foo
# => · ─┬─
# => · ╰── command doesn't support string input
# => ╰────
# =>
```
Before:
```nu
echo "evil string" | foo
# => my cool int is evil string
```
After:
```nu
echo "evil string" | foo
# => Error: nu:🐚:only_supports_this_input_type
# =>
# => × Input type not supported.
# => ╭─[entry #17:1:6]
# => 1 │ echo "evil string" | foo
# => · ──────┬────── ─┬─
# => · │ ╰── only int input data is supported
# => · ╰── input type: string
# => ╰────
```
Known affected internal commands which erroneously accepted any type:
* `str join`
* `zip`
* `reduce`
# Tests + Formatting
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- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
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* Play whack-a-mole with the commands and scripts this will inevitably
break
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# Description
Prevents ndots from being expanded if they are prefixed with `./`, as
the agreed resolution to #13303. Only applies to externals, mirroring
the fix from #13218.
I did
[attempt](https://github.com/132ikl/nushell/tree/internal-ndots-attempt)
to apply the fix for internal commands as well, but it seems like the
path is expanded too aggressively and I haven't investigated it further
yet. `./...` gets normalized into `<pwd>/./...`, which gets normalized
into `<pwd>/...` before being handed to `expand_ndots`, and at that
point it just looks like a normal n-dots so we can't tell we shouldn't
expand.
(Fixes#13303)
# User-Facing Changes
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* N-dots are no longer expanded to external command calls when prefixed
with `./`.
# Tests + Formatting
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Added tests to prevent regression.
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
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N/A
# Description
Adds an `is_glob` function to the nu-glob crate that takes a string
pattern and returns whether or not it's a glob that would be expanded by
nu-glob. Right now, this just means checking if it contains `*`, `?`, or
`[`.
Previously, this same code was duplicated in the following places:
- `ls`: Determining whether to read a folder's contents or expand a glob
- `run_external.rs` in nu-command: Arguments to externals only have
n-dots and tilde expansion applied if they weren't globs
- `glob_from` in nu-engine:
- `glob_from` can get the prefix in a simpler way for non-globs
- If the canonical path for a non-glob path contains glob
metacharacters, it needs to be escaped
- `completion_common.rs` in nu-cli: File/folder completions containing
glob metacharacters need to be wrapped in quotes
All of these locations can use `nu_glob::is_glob` now instead of rolling
their own checks. This does mean that nu-cli now has a dependency on
nu-glob.
# User-Facing Changes
Users of nu-glob will now be able to check if a given pattern is a glob
expanded by nu-glob.
For users of Nushell, completion suggestions for files containing `]`
will no longer be wrapped in quotes if they contain no other glob
metacharacters. This is because unmatched `]`s are ignored by nu-glob,
but we used to consider such file completions contaminated anyway.
# Tests + Formatting
This is a very basic function, so I just added some doctests.
# After Submitting
This is meant to be used in
https://github.com/nushell/nushell/pull/14674.
# Description
Rework of #14570, fixing #14567.
`exec` will decrement `SHLVL` env value before passing it to target
executable (in interactive mode).
(Same as last pr, but this time there's no wrong change to current
working code)
Two `SHLVL` related tests were also added this time.
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In this PR I continued the idea of #11494, it added an `auto` option to
the ansi coloring config option, I did this too but in a more simple
approach.
So I added a new enum `UseAnsiColoring` with the three values `True`,
`False` and `Auto`. When that value is set to `auto`, the default value,
it will use `std::io::stdout().is_terminal()` to decided whether to use
ansi coloring. This allows to dynamically decide whether to print ansi
color codes or not, [cargo does it the same
way](652623b779/src/bin/cargo/main.rs (L72)).
`True` and `False` act as overrides to the `is_terminal` check. So with
that PR it is possible to force ansi colors on the `table` command or
automatically remove them from the miette errors if no terminal is used.
# User-Facing Changes
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Terminal users shouldn't be affected by this change as the default value
was `true` and `is_terminal` returns for terminals `true` (duh).
Non-terminal users, that use `nu` in some embedded way or the engine
implemented in some other way (like my jupyter kernel) will now have by
default no ansi coloring and need to enable it manually if their
environment allows it.
# Tests + Formatting
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- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
> **Note**
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> ```
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The test for fancy errors expected ansi codes, since tests aren't run
"in terminal", the ansi codes got stripped away.
I added a line that forced ansi colors above it. I'm not sure if that
should be the case or if we should test against no ansi colors.
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
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This should resolve#11464 and partially #11847. This also closes
#11494.
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# Description
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fixes#14567
Now NuShell's `exec` command will decrement `SHLVL` env value before
passing it to target executable.
It only works in interactive session, the same as `SHLVL`
initialization.
In addition, this PR also make a simple change to `SHLVL` initialization
(only remove an unnecessary type conversion).
# User-Facing Changes
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helps us keep track of breaking changes. -->
None.
# Tests + Formatting
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check that you're using the standard code style
- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
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Formatted.
With interactively tested with several shells (bash, zsh, fish) and
cross-exec-ing them, it works well this time.
# After Submitting
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# Description
Removes unnecessary usages of `Call::rest_iter_flattened` and
`get_rest_for_glob_pattern` and replaces them with `CallExt::rest`.
# User-Facing Changes
None
# Description
Fixes#14470 where the `sys cpu` command is slow. This was done by
removing the `cpu_usage` column from the default output, since it takes
400ms to calculate. Instead a `--long` flag was added that, when
provided, adds back the `cpu_usage` column.
```nu
# Before
> bench { sys cpu | length } | get mean
401ms 591µs 896ns
# After
> bench { sys cpu | length } | get mean
500µs 13ns # around 1-2ms in practice
```
# User-Facing Changes
- `sys cpu` no longer has a `cpu_usage` column by default.
- Added a `--long` flag for `sys cpu` to add back the removed column.
# Description
Follow up to #14341. Changes the fields of `Hooks` to `Vec` or `Hashmap`
to match the new config defaults.
# User-Facing Changes
Mostly the same as #14341. `pre_prompt` and `pre_execution` must now be
a list, and `env_change` must be a record.
# Description
List values and list streams have the same type (`list<>`). Rather,
streaming is a separate property of the pipeline/command output. This PR
removes the unnecessary `ListStream` type.
# User-Facing Changes
Should be none, except `random dice` now has a more specific output
type.
# Description
This PR allows nushell to run powershell scripts easier. You can already
do `powershell -c script.ps1` but this PR takes it a step further by
doing the `powershell -c` part for you. So, if you have script.ps1 you
can execute it by running it in the command position of the repl.
or once it's in json, just consume it with nushell.
# User-Facing Changes
Easier to run powershell scripts. It should work on Windows with
powershell.exe.
# Tests + Formatting
Added 1 test
# After Submitting
---------
Co-authored-by: Wind <WindSoilder@outlook.com>
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# Description
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What it says on the tin, this change adds the `mac` and `ip` columns to
the `sys net` command, where `mac` is the interface mac address and `ip`
is a record containing ipv4 and ipv6 addresses as well as whether or not
the address is loopback and multicast. I thought it might be useful to
have this information available in Nushell. This change basically just
pulls extra information out of the underlying structs in the
`sysinfo::Networks` struct. Here's a screenshot from my system:
# User-Facing Changes
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helps us keep track of breaking changes. -->
- Adds `mac` and `ip` columns to the `sys net` command, where `mac`
contains the interface's mac address and `ip` contains information
extracted from the `std::net::IpAddr` struct, including address,
protocol, whether or not the address is loopback, and whether or not
it's multicast
# Tests + Formatting
Didn't add any tests specifically, didn't seem like there were any
relevant tests. Ran existing tests and formatting.
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# Description
This PR tries to correct the problem of nushell scripts being made
executable on Windows systems. In order to do this, these steps need to
take place.
1. `assoc .nu=nuscript`
2. `ftype nuscript=C:\path\to\nu.exe '%1' %*`
3. modify the env var PATHEXT by appending `;.NU` at the end
Once those steps are done and this PR is landed, one should be able to
create a script such as this.
```nushell
❯ open im_exe.nu
def main [arg] {
print $"Hello ($arg)!"
}
```
Then they should be able to do this to run the nushell script.
```nushell
❯ im_exe Nushell
Hello Nushell!
```
Under-the-hood, nushell is shelling out to cmd.exe in order to run the
nushell script.
# User-Facing Changes
closes#13020
# Tests + Formatting
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Make sure you've run and fixed any issues with these commands:
- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used` to
check that you're using the standard code style
- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
# After Submitting
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# Release Notes Excerpt
* Hooks now default to an empty value of the proper type (e.g., `[]` or
`{}`) when not otherwise specified
# Description
```nushell
# Start with no config
nu -n
# Populate with defaults
$env.config = {}
$env.config.hooks
```
* Before: All hooks other than `display_output` were set to `null`.
Attempting to append a hook using `++=` would fail unless it had already
been assigned.
* After:
* `pre_prompt`, `pre_execution`, and `command_not_found` are set to
empty lists. This allows the user to simply append new hooks using
`++=`.
* `env_change` is set to an empty record. This allows the user to add
new hooks using `merge`, although a "helper" command would still be
useful (TODO: stdlib).
Also fixed a typo in an error message.
# User-Facing Changes
There shouldn't be any breaking changes since (before) there were no
guarantees of the hook's value/type. Previously, users would have to
check for `null` and `default` to an empty list before appending. Any
user-strategies for dealing with the problem should continue to work
after this change.
# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
Note that, for reasons I cannot ascertain, this PR appears to have
*fixed* the `command_not_found_error_recognizes_non_executable_file`
test that was previously broken by #12953. That PR essentially rewrote
the test to match the new behavior, but it no longer tested what it was
intended to test.
Now, the test is working again as designed (and as it works in the
REPL).
# After Submitting
This will be covered in the Configuration update for #14249. This PR
will simplify several examples in the doc.
verb 'setup' -> 'set up'
setup as verb [is a misspelling of set
up](https://en.wiktionary.org/wiki/setup#Verb)
* [verb: set up](https://en.wiktionary.org/wiki/set_up)
* [noun: setup](https://en.wiktionary.org/wiki/setup)
*I split this from #14229 typo corrections because 'setup' is not as
clear-cut wrong. Having read the dictionary pages (linked) I'm even more
confident in this change being correct rather than only subjectively
better.*
Co-authored-by: Stefan Holderbach <sholderbach@users.noreply.github.com>
# Description
This PR adds an indicator when listing subcommands. That indicator tells
whether the command is a plugin, alias, or custom_command.
I changed some of the API to make this work a little easier, namely
`get_signatures()` is now `get_signatures_and_declids()`. It was used in
only one other place (run-external), so I thought it was fine to change
it.
There is a long-standing issue with aliases where they reference the
command name instead of the alias name. This PR doesn't fix that bug.
Example.
```nushell
❯ alias "str fill" = str wrap
```
```nushell
❯ str
... other stuff
Subcommands:
str wrap (alias) - Alias for `str wrap`
str wrap (plugin) - Wrap text passed into pipeline.
```
# User-Facing Changes
Slightly different output of subcommands.
# Description
This PR adds `start_time` to the MacOS `ps -l` command. Was requested in
discord. `start_time` is displayed in `Local` time.
# User-Facing Changes
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helps us keep track of breaking changes. -->
# Tests + Formatting
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> **Note**
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> toolkit check pr
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# After Submitting
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/cc @cablehead
# Description
After PR https://github.com/nushell/nushell/pull/12953, LS_COLORS
coloring broke in the `grid` and `ls` commands because the full path to
the files were not available. This PR restores the coloring.
# User-Facing Changes
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helps us keep track of breaking changes. -->
# Tests + Formatting
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tests for the standard library
> **Note**
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> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
# After Submitting
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# Description
Partialy addresses #13868. `try` does not catch non-zero exit code
errors from the last command in a pipeline if the result is assigned to
a variable using `let` (or `mut`).
This was fixed by adding a new `OutDest::Value` case. This is used when
the pipeline is in a "value" position. I.e., it will be collected into a
value. This ended up replacing most of the usages of `OutDest::Capture`.
So, this PR also renames `OutDest::Capture` to `OutDest::PipeSeparate`
to better fit the few remaining use cases for it.
# User-Facing Changes
Bug fix.
# Tests + Formatting
Added two tests.
# Description
The meaning of the word usage is specific to describing how a command
function is *used* and not a synonym for general description. Usage can
be used to describe the SYNOPSIS or EXAMPLES sections of a man page
where the permitted argument combinations are shown or example *uses*
are given.
Let's not confuse people and call it what it is a description.
Our `help` command already creates its own *Usage* section based on the
available arguments and doesn't refer to the description with usage.
# User-Facing Changes
`help commands` and `scope commands` will now use `description` or
`extra_description`
`usage`-> `description`
`extra_usage` -> `extra_description`
Breaking change in the plugin protocol:
In the signature record communicated with the engine.
`usage`-> `description`
`extra_usage` -> `extra_description`
The same rename also takes place for the methods on
`SimplePluginCommand` and `PluginCommand`
# Tests + Formatting
- Updated plugin protocol specific changes
# After Submitting
- [ ] update plugin protocol doc
# Description
Prefer process name over executable path. This in practice causes the
`name` column to use just the base executable name.
Also set start_time to nothing on error, because why not.
# User-Facing Changes
Before:
> /opt/google/chrome/chrome
After:
> chrome
Also picks up changes due to `echo test-proc > /proc/$$/comm`.
# Tests + Formatting
No new coverage.
# Description
Fixes Issue #13477
This adds a check to see if a user is trying to invoke a
(non-executable) file as a command and returns a helpful error if so.
EDIT: this will not work on Windows, and is arguably not relevant there,
because of the different semantics of executables. I think the
equivalent on Windows would be if a user tries to invoke `./foo`, we
should look for `foo.exe` or `foo.bat` in the directory and recommend
that if it exists.
# User-Facing Changes
When a user invokes an unrecognized command that is the path to an
existing file, the error used to say:
`{name} is neither a Nushell built-in or a known external command`
This PR proposes to change the message to:
`{name} refers to a file that is not executable. Did you forget to to
set execute permissions?`
# Tests + Formatting
Ran cargo fmt, clippy and test on the workspace.
EDIT: added test asserting the new behavior
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# Description
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Replaces the `dirs_next` family of crates with `dirs`. `dirs_next` was
born when the `dirs` crates were abandoned three years ago, but they're
being maintained again and most projects depend on `dirs` nowadays.
`dirs_next` has been abandoned since.
This came up while working on
https://github.com/nushell/nushell/pull/13382.
# User-Facing Changes
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helps us keep track of breaking changes. -->
None.
# Tests + Formatting
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Make sure you've run and fixed any issues with these commands:
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check that you're using the standard code style
- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
> **Note**
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> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
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> toolkit check pr
> ```
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Tests and formatter have been run.
# After Submitting
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# Description
Allows `Stack` to have a modified local `Config`, which is updated
immediately when `$env.config` is assigned to. This means that even
within a script, commands that come after `$env.config` changes will
always see those changes in `Stack::get_config()`.
Also fixed a lot of cases where `engine_state.get_config()` was used
even when `Stack` was available.
Closes#13324.
# User-Facing Changes
- Config changes apply immediately after the assignment is executed,
rather than whenever config is read by a command that needs it.
- Potentially slower performance when executing a lot of lines that
change `$env.config` one after another. Recommended to get `$env.config`
into a `mut` variable first and do modifications, then assign it back.
- Much faster performance when executing a script that made
modifications to `$env.config`, as the changes are only parsed once.
# Tests + Formatting
All passing.
# After Submitting
- [ ] release notes
# Description
This PR adds an internal representation language to Nushell, offering an
alternative evaluator based on simple instructions, stream-containing
registers, and indexed control flow. The number of registers required is
determined statically at compile-time, and the fixed size required is
allocated upon entering the block.
Each instruction is associated with a span, which makes going backwards
from IR instructions to source code very easy.
Motivations for IR:
1. **Performance.** By simplifying the evaluation path and making it
more cache-friendly and branch predictor-friendly, code that does a lot
of computation in Nushell itself can be sped up a decent bit. Because
the IR is fairly easy to reason about, we can also implement
optimization passes in the future to eliminate and simplify code.
2. **Correctness.** The instructions mostly have very simple and
easily-specified behavior, so hopefully engine changes are a little bit
easier to reason about, and they can be specified in a more formal way
at some point. I have made an effort to document each of the
instructions in the docs for the enum itself in a reasonably specific
way. Some of the errors that would have happened during evaluation
before are now moved to the compilation step instead, because they don't
make sense to check during evaluation.
3. **As an intermediate target.** This is a good step for us to bring
the [`new-nu-parser`](https://github.com/nushell/new-nu-parser) in at
some point, as code generated from new AST can be directly compared to
code generated from old AST. If the IR code is functionally equivalent,
it will behave the exact same way.
4. **Debugging.** With a little bit more work, we can probably give
control over advancing the virtual machine that `IrBlock`s run on to
some sort of external driver, making things like breakpoints and single
stepping possible. Tools like `view ir` and [`explore
ir`](https://github.com/devyn/nu_plugin_explore_ir) make it easier than
before to see what exactly is going on with your Nushell code.
The goal is to eventually replace the AST evaluator entirely, once we're
sure it's working just as well. You can help dogfood this by running
Nushell with `$env.NU_USE_IR` set to some value. The environment
variable is checked when Nushell starts, so config runs with IR, or it
can also be set on a line at the REPL to change it dynamically. It is
also checked when running `do` in case within a script you want to just
run a specific piece of code with or without IR.
# Example
```nushell
view ir { |data|
mut sum = 0
for n in $data {
$sum += $n
}
$sum
}
```
```gas
# 3 registers, 19 instructions, 0 bytes of data
0: load-literal %0, int(0)
1: store-variable var 904, %0 # let
2: drain %0
3: drop %0
4: load-variable %1, var 903
5: iterate %0, %1, end 15 # for, label(1), from(14:)
6: store-variable var 905, %0
7: load-variable %0, var 904
8: load-variable %2, var 905
9: binary-op %0, Math(Plus), %2
10: span %0
11: store-variable var 904, %0
12: load-literal %0, nothing
13: drain %0
14: jump 5
15: drop %0 # label(0), from(5:)
16: drain %0
17: load-variable %0, var 904
18: return %0
```
# Benchmarks
All benchmarks run on a base model Mac Mini M1.
## Iterative Fibonacci sequence
This is about as best case as possible, making use of the much faster
control flow. Most code will not experience a speed improvement nearly
this large.
```nushell
def fib [n: int] {
mut a = 0
mut b = 1
for _ in 2..=$n {
let c = $a + $b
$a = $b
$b = $c
}
$b
}
use std bench
bench { 0..50 | each { |n| fib $n } }
```
IR disabled:
```
╭───────┬─────────────────╮
│ mean │ 1ms 924µs 665ns │
│ min │ 1ms 700µs 83ns │
│ max │ 3ms 450µs 125ns │
│ std │ 395µs 759ns │
│ times │ [list 50 items] │
╰───────┴─────────────────╯
```
IR enabled:
```
╭───────┬─────────────────╮
│ mean │ 452µs 820ns │
│ min │ 427µs 417ns │
│ max │ 540µs 167ns │
│ std │ 17µs 158ns │
│ times │ [list 50 items] │
╰───────┴─────────────────╯
```
##
[gradient_benchmark_no_check.nu](https://github.com/nushell/nu_scripts/blob/main/benchmarks/gradient_benchmark_no_check.nu)
IR disabled:
```
╭───┬──────────────────╮
│ 0 │ 27ms 929µs 958ns │
│ 1 │ 21ms 153µs 459ns │
│ 2 │ 18ms 639µs 666ns │
│ 3 │ 19ms 554µs 583ns │
│ 4 │ 13ms 383µs 375ns │
│ 5 │ 11ms 328µs 208ns │
│ 6 │ 5ms 659µs 542ns │
╰───┴──────────────────╯
```
IR enabled:
```
╭───┬──────────────────╮
│ 0 │ 22ms 662µs │
│ 1 │ 17ms 221µs 792ns │
│ 2 │ 14ms 786µs 708ns │
│ 3 │ 13ms 876µs 834ns │
│ 4 │ 13ms 52µs 875ns │
│ 5 │ 11ms 269µs 666ns │
│ 6 │ 6ms 942µs 500ns │
╰───┴──────────────────╯
```
##
[random-bytes.nu](https://github.com/nushell/nu_scripts/blob/main/benchmarks/random-bytes.nu)
I got pretty random results out of this benchmark so I decided not to
include it. Not clear why.
# User-Facing Changes
- IR compilation errors may appear even if the user isn't evaluating
with IR.
- IR evaluation can be enabled by setting the `NU_USE_IR` environment
variable to any value.
- New command `view ir` pretty-prints the IR for a block, and `view ir
--json` can be piped into an external tool like [`explore
ir`](https://github.com/devyn/nu_plugin_explore_ir).
# Tests + Formatting
All tests are passing with `NU_USE_IR=1`, and I've added some more eval
tests to compare the results for some very core operations. I will
probably want to add some more so we don't have to always check
`NU_USE_IR=1 toolkit test --workspace` on a regular basis.
# After Submitting
- [ ] release notes
- [ ] further documentation of instructions?
- [ ] post-release: publish `nu_plugin_explore_ir`
# Description
This PR introduces a new `Signals` struct to replace our adhoc passing
around of `ctrlc: Option<Arc<AtomicBool>>`. Doing so has a few benefits:
- We can better enforce when/where resetting or triggering an interrupt
is allowed.
- Consolidates `nu_utils::ctrl_c::was_pressed` and other ad-hoc
re-implementations into a single place: `Signals::check`.
- This allows us to add other types of signals later if we want. E.g.,
exiting or suspension.
- Similarly, we can more easily change the underlying implementation if
we need to in the future.
- Places that used to have a `ctrlc` of `None` now use
`Signals::empty()`, so we can double check these usages for correctness
in the future.
This reverts commit 0cfd5fbece.
The original PR messed up syntax higlighting of aliases and causes
panics of completion in the presence of alias.
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# Description
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# User-Facing Changes
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# Description
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Part of https://github.com/nushell/nushell/issues/12963, step 2.
This PR refactors Call and related argument structures to remove their
dependency on `Expression::span` which will be removed in the future.
# User-Facing Changes
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helps us keep track of breaking changes. -->
Should be none. If you see some error messages that look broken, please
report.
# Tests + Formatting
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# After Submitting
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# Description
@hustcer reported that slashes were disappearing from external args
since #13089:
```
$> ossutil ls oss://abc/b/c
Error: invalid cloud url: "oss:/abc/b/c", please make sure the url starts with: "oss://"
$> ossutil ls 'oss://abc/b/c'
Error: oss: service returned error: StatusCode=403, ErrorCode=UserDisable, ErrorMessage="UserDisable", RequestId=66791EDEFE87B73537120838, Ec=0003-00000801, Bucket=abc, Object=
```
I narrowed this down to the ndots handling, since that does path parsing
and path reconstruction in every case. I decided to change that so that
it only activates if the string contains at least `...`, since that
would be the minimum trigger for ndots, and also to not activate it if
the string contains `://`, since it's probably undesirable for a URL.
Kind of a hack, but I'm not really sure how else we decide whether
someone wants ndots or not.
# User-Facing Changes
- bare strings not containing ndots are not modified
- bare strings containing `://` are not modified
# Tests + Formatting
Added tests to prevent regression.
# Description
We've had a lot of different issues and PRs related to arg handling with
externals since the rewrite of `run-external` in #12921:
- #12950
- #12955
- #13000
- #13001
- #13021
- #13027
- #13028
- #13073
Many of these are caused by the argument handling of external calls and
`run-external` being very special and involving the parser handing
quoted strings over to `run-external` so that it knows whether to expand
tildes and globs and so on. This is really unusual and also makes it
harder to use `run-external`, and also harder to understand it (and
probably is part of the reason why it was rewritten in the first place).
This PR moves a lot more of that work over to the parser, so that by the
time `run-external` gets it, it's dealing with much more normal Nushell
values. In particular:
- Unquoted strings are handled as globs with no expand
- The unescaped-but-quoted handling of strings was removed, and the
parser constructs normal looking strings instead, removing internal
quotes so that `run-external` doesn't have to do it
- Bare word interpolation is now supported and expansion is done in this
case
- Expressions typed as `Glob` containing `Expr::StringInterpolation` now
produce `Value::Glob` instead, with the quoted status from the expr
passed through so we know if it was a bare word
- Bare word interpolation for values typed as `glob` now possible, but
not implemented
- Because expansion is now triggered by `Value::Glob(_, false)` instead
of looking at the expr, externals now support glob types
# User-Facing Changes
- Bare word interpolation works for external command options, and
otherwise embedded in other strings:
```nushell
^echo --foo=(2 + 2) # prints --foo=4
^echo -foo=$"(2 + 2)" # prints -foo=4
^echo foo="(2 + 2)" # prints (no interpolation!) foo=(2 + 2)
^echo foo,(2 + 2),bar # prints foo,4,bar
```
- Bare word interpolation expands for external command head/args:
```nushell
let name = "exa"
~/.cargo/bin/($name) # this works, and expands the tilde
^$"~/.cargo/bin/($name)" # this doesn't expand the tilde
^echo ~/($name)/* # this glob is expanded
^echo $"~/($name)/*" # this isn't expanded
```
- Ndots are now supported for the head of an external command
(`^.../foo` works)
- Glob values are now supported for head/args of an external command,
and expanded appropriately:
```nushell
^("~/.cargo/bin/exa" | into glob) # the tilde is expanded
^echo ("*.txt" | into glob) # this glob is expanded
```
- `run-external` now works more like any other command, without
expecting a special call convention
for its args:
```nushell
run-external echo "'foo'"
# before PR: 'foo'
# after PR: foo
run-external echo "*.txt"
# before PR: (glob is expanded)
# after PR: *.txt
```
# Tests + Formatting
Lots of tests added and cleaned up. Some tests that weren't active on
Windows changed to use `nu --testbin cococo` so that they can work.
Added a test for Linux only to make sure tilde expansion of commands
works, because changing `HOME` there causes `~` to reliably change.
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
- [ ] release notes: make sure to mention the new syntaxes that are
supported
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Fixes#13171
# Description
Corrects the `sys users` signature to match the returned type.
Before this change `sys users | where name == root` would result in a
type error.
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Description of your pull request goes here. **Provide examples and/or
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-->
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
# Tests + Formatting
<!--
Don't forget to add tests that cover your changes.
Make sure you've run and fixed any issues with these commands:
- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used` to
check that you're using the standard code style
- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
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# After Submitting
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documentation](https://github.com/nushell/nushell.github.io) after the
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# Description
Removes the `which-support` cargo feature and makes all of its
feature-gated code enabled by default in all builds. I'm not sure why
this one command is gated behind a feature. It seems to be a relic of
older code where we had features for what seems like every command.
# Description
Removes the old, deprecated behavior of the `sys` command. That is, it
will no longer return the full system information record.
# User-Facing Changes
Breaking change: `sys` no longer outputs anything and will instead
display help text.
# Description
This pr is going to use `pathdiff::diff_path`, so we don't need to
handle for relative path by ourselves.
This is also the behavior before the rewritten of run_external.rs
It's a follow up to https://github.com/nushell/nushell/pull/13028
# User-Facing Changes
NaN
# Tests + Formatting
No need to add tests
# Description
Fixes: #13066
nushell should remove argument values' inner quote once it gets `=`.
Whatever it's a flag or not, and it also replace from `\"` to `"` before
passing it to external commands.
# User-Facing Changes
Given the shell script:
```shell
# test.sh
echo $@
```
## Before
```
> sh test.sh -ldflags="-s -w" github.com
-ldflags="-s -w" github.com
> sh test.sh exp='-s -w' github.com
exp='-s -w' github.com
```
## After
```
> sh test.sh -ldflags="-s -w" github.com
-ldflags=-s -w github.com
> sh test.sh exp='-s -w' github.com
exp=-s -w github.com
```
# Tests + Formatting
Added some tests
# Description
First part of SpanID refactoring series. This PR adds a `SpanId` type
and a corresponding `span_id` field to `Expression`. Parser creating
expressions will now add them to an array in `StateWorkingSet`,
generates a corresponding ID and saves the ID to the Expression. The IDs
are not used anywhere yet.
For the rough overall plan, see
https://github.com/nushell/nushell/issues/12963.
# User-Facing Changes
Hopefully none. This is only a refactor of Nushell's internals that
shouldn't have visible side effects.
# Tests + Formatting
# After Submitting
# Description
Fix#13021
This changes the `expand_glob()` function to use
`nu_engine::glob_from()` so that absolute paths are actually preserved,
rather than being made relative to the provided parent. This preserves
the intent of whoever wrote the original path/glob, and also makes it so
that tilde always produces absolute paths.
I also made `expand_glob()` handle Ctrl-C so that it can be interrupted.
cc @YizhePKU
# Tests + Formatting
No additional tests here... but that might be a good idea.
# Description
Makes `run-external` error if arguments to `cmd.exe` internal commands
contain newlines or a percent sign. This is because the percent sign can
expand environment variables, potentially? allowing command injection.
Newlines I think will truncate the rest of the arguments and should
probably be disallowed to be safe.
# After Submitting
- If the user calls `cmd.exe` directly, then this bypasses our
handling/checking for internal `cmd` commands. Instead, we use the
handling from the Rust std lib which, in this case, does not do special
handling and is potentially unsafe. Then again, it could be the user's
specific intention to run `cmd` with whatever trusted input. The problem
is that since we use the std lib handling, it assumes the exe uses the C
runtime escaping rules and will perform some unwanted escaping. E.g., it
will add backslashes to the quotes in `cmd echo /c '""'`.
- If `cmd` is called indirectly via a `.bat` or `.cmd` file, then we use
the Rust std lib which has separate handling for bat files that should
be safe, but will reject some inputs.
- ~~I'm not sure how we handle `PATHEXT`, that can also cause a file
without an extension to be run as a bat file. If so, I don't know where
the handling, if any, is done for that.~~ It looks like we use the
`which` crate to do the lookup using `PATHEXT`. Then, we pass the exe
path from that to the Rust std lib `Command`, which should be safe
(except for the first `cmd.exe` note).
So, in the future we need to unify and/or fix these different
implementations, including our own special handling for internal `cmd`
commands that this PR tries to fix.
# Description
Fix a regression introduced by #12921, where tilde expansion was no
longer done on the external command name, breaking things like
```nushell
> ~/.cargo/bin/exa
```
This properly handles quoted strings, so they don't expand:
```nushell
> ^"~/.cargo/bin/exa"
Error: nu:🐚:external_command
× External command failed
╭─[entry #1:1:2]
1 │ ^"~/.cargo/bin/exa"
· ─────────┬────────
· ╰── Command `~/.cargo/bin/exa` not found
╰────
help: `~/.cargo/bin/exa` is neither a Nushell built-in or a known external command
```
This required a change to the parser, so the command name is also parsed
in the same way the arguments are - i.e. the quotes on the outside
remain in the expression. Hopefully that doesn't break anything else. 🤞Fixes#13000. Should include in patch release 0.94.1
cc @YizhePKU
# User-Facing Changes
- Tilde expansion now works again for external commands
- The `command` of `run-external` will now have its quotes removed like
the other arguments if it is a literal string
- The parser is changed to include quotes in the command expression of
`ExternalCall` if they were present
# Tests + Formatting
I would like to add a regression test for this, but it's complicated
because we need a well-known binary within the home directory, which
just isn't a thing. We could drop one there, but that's kind of a bad
behavior for a test to do. I also considered changing the home directory
for the test, but that's so platform-specific - potentially could get it
working on specific platforms though. Changing `HOME` env on Linux
definitely works as far as tilde expansion works.
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
This PR fixes a bug where `.` is expanded into an empty string when used
as an argument to external commands. Fixes
https://github.com/nushell/nushell/issues/12948.
---------
Co-authored-by: Ian Manske <ian.manske@pm.me>
# Description
Instead of returning an error, this PR changes `expand_glob` in
`run_external.rs` to return the original string arg if glob creation
failed. This makes it so that, e.g.,
```nushell
^echo `[`
^echo `***`
```
no longer fail with a shell error. (This follows from #12921.)
