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Fixes#15476
# Description
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Consider PATH when checking for potential_nuscript_in_windows to allow
executing scripts which are in PATH without having to full path address
them. It previously only checked the current working directory so only
relative paths to cwd and full path worked.
The current implementation runs this then through cmd.exe /D /C which
can run it with assoc and ftype set for nushell scripts.
We could instead run it through nu as `std::env::current_exe()` avoiding
the cmd call and the need for assoc and ftype (see:
8b25173f02).
But ive left the current implementation for this intact to not change
implementation details, avoid a bigger change and leave this open for
discussion here since im not sure if this has any major implications.
# User-Facing Changes
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This would now run every external command through PATH an additional
time on windows, so potentially twice. I dont think this has any bigger
effect.
# Tests + Formatting
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> **Note**
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# After Submitting
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# Description
As stated in the title, when pressing ctrl-z, I sometimes feel confused
because I return to the REPL without any message. I don't know if the
process has been killed or suspended.
This PR aims to add a message to notify the user that the process has
been frozen.
# User-Facing Changes
After pressing `ctrl-z`. A message will be printed in repl.
# Tests + Formatting
NaN
# After Submitting
NaN
# Description
This is an attempt to improve the nushell situation with regard to issue
#247.
This PR implements:
- [X] spawning jobs: `job spawn { do_background_thing }`
Jobs will be implemented as threads and not forks, to maintain a
consistent behavior between unix and windows.
- [X] listing running jobs: `job list`
This should allow users to list what background tasks they currently
have running.
- [X] killing jobs: `job kill <id>`
- [X] interupting nushell code in the job's background thread
- [X] interrupting the job's currently-running process, if any.
Things that should be taken into consideration for implementation:
- [X] (unix-only) Handling `TSTP` signals while executing code and
turning the current program into a background job, and unfreezing them
in foreground `job unfreeze`.
- [X] Ensuring processes spawned by background jobs get distinct process
groups from the nushell shell itself
This PR originally aimed to implement some of the following, but it is
probably ideal to be left for another PR (scope creep)
- Disowning external process jobs (`job dispatch`)
- Inter job communication (`job send/recv`)
Roadblocks encountered so far:
- Nushell does some weird terminal sequence magics which make so that
when a background process or thread prints something to stderr and the
prompt is idle, the stderr output ends up showing up weirdly
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# Description
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In #14968 I grepped the code for `IoError::new` calls with unknown
spans, but I forgot to also grep for
`IoError::new_with_additional_context`, so I missed some. Hopefullly
this is the last P.S. to #14968.
# User-Facing Changes
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N/A
# Tests + Formatting
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> **Note**
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- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
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N/A
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# Description
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As mentioned in #10698, we have too many `ShellError` variants, with
some even overlapping in meaning. This PR simplifies and improves I/O
error handling by restructuring `ShellError` related to I/O issues.
Previously, `ShellError::IOError` only contained a message string,
making it convenient but overly generic. It was widely used without
providing spans (#4323).
This PR introduces a new `ShellError::Io` variant that consolidates
multiple I/O-related errors (except for `ShellError::NetworkFailure`,
which remains distinct for now). The new `ShellError::Io` variant
replaces the following:
- `FileNotFound`
- `FileNotFoundCustom`
- `IOInterrupted`
- `IOError`
- `IOErrorSpanned`
- `NotADirectory`
- `DirectoryNotFound`
- `MoveNotPossible`
- `CreateNotPossible`
- `ChangeAccessTimeNotPossible`
- `ChangeModifiedTimeNotPossible`
- `RemoveNotPossible`
- `ReadingFile`
## The `IoError`
`IoError` includes the following fields:
1. **`kind`**: Extends `std::io::ErrorKind` to specify the type of I/O
error without needing new `ShellError` variants. This aligns with the
approach used in `std::io::Error`. This adds a second dimension to error
reporting by combining the `kind` field with `ShellError` variants,
making it easier to describe errors in more detail. As proposed by
@kubouch in [#design-discussion on
Discord](https://discord.com/channels/601130461678272522/615329862395101194/1323699197165178930),
this helps reduce the number of `ShellError` variants. In the error
report, the `kind` field is displayed as the "source" of the error,
e.g., "I/O error," followed by the specific kind of I/O error.
2. **`span`**: A non-optional field to encourage providing spans for
better error reporting (#4323).
3. **`path`**: Optional `PathBuf` to give context about the file or
directory involved in the error (#7695). If provided, it’s shown as a
help entry in error reports.
4. **`additional_context`**: Allows adding custom messages when the
span, kind, and path are insufficient. This is rendered in the error
report at the labeled span.
5. **`location`**: Sometimes, I/O errors occur in the engine itself and
are not caused directly by user input. In such cases, if we don’t have a
span and must set it to `Span::unknown()`, we need another way to
reference the error. For this, the `location` field uses the new
`Location` struct, which records the Rust file and line number where the
error occurred. This ensures that we at least know the Rust code
location that failed, helping with debugging. To make this work, a new
`location!` macro was added, which retrieves `file!`, `line!`, and
`column!` values accurately. If `Location::new` is used directly, it
issues a warning to remind developers to use the macro instead, ensuring
consistent and correct usage.
### Constructor Behavior
`IoError` provides five constructor methods:
- `new` and `new_with_additional_context`: Used for errors caused by
user input and require a valid (non-unknown) span to ensure precise
error reporting.
- `new_internal` and `new_internal_with_path`: Used for internal errors
where a span is not available. These methods require additional context
and the `Location` struct to pinpoint the source of the error in the
engine code.
- `factory`: Returns a closure that maps an `std::io::Error` to an
`IoError`. This is useful for handling multiple I/O errors that share
the same span and path, streamlining error handling in such cases.
## New Report Look
This is simulation how the I/O errors look like (the `open crates` is
simulated to show how internal errors are referenced now):
## `Span::test_data()`
To enable better testing, `Span::test_data()` now returns a value
distinct from `Span::unknown()`. Both `Span::test_data()` and
`Span::unknown()` refer to invalid source code, but having a separate
value for test data helps identify issues during testing while keeping
spans unique.
## Cursed Sneaky Error Transfers
I removed the conversions between `std::io::Error` and `ShellError` as
they often removed important information and were used too broadly to
handle I/O errors. This also removed the problematic implementation
found here:
7ea4895513/crates/nu-protocol/src/errors/shell_error.rs (L1534-L1583)
which hid some downcasting from I/O errors and made it hard to trace
where `ShellError` was converted into `std::io::Error`. To address this,
I introduced a new struct called `ShellErrorBridge`, which explicitly
defines this transfer behavior. With `ShellErrorBridge`, we can now
easily grep the codebase to locate and manage such conversions.
## Miscellaneous
- Removed the OS error added in #14640, as it’s no longer needed.
- Improved error messages in `glob_from` (#14679).
- Trying to open a directory with `open` caused a permissions denied
error (it's just what the OS provides). I added a `is_dir` check to
provide a better error in that case.
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
- Error outputs now include more detailed information and are formatted
differently, including updated error codes.
- The structure of `ShellError` has changed, requiring plugin authors
and embedders to update their implementations.
# Tests + Formatting
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> **Note**
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> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
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> ```
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I updated tests to account for the new I/O error structure and
formatting changes.
# After Submitting
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This PR closes#7695 and closes#14892 and partially addresses #4323 and
#10698.
---------
Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>
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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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helps us keep track of breaking changes. -->
* N-dots are no longer expanded to external command calls when prefixed
with `./`.
# Tests + Formatting
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> **Note**
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> ```bash
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> ```
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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.
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# Description
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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
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
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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tests for the standard library
> **Note**
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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.
# 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
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
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>
# 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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> ```
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# 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
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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# Tests + Formatting
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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
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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- `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))
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tests for the standard library
> **Note**
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> ```
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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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# 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
<!-- List of all changes that impact the user experience here. This
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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> **Note**
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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
# 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.)
# Description
This PR allows byte streams to optionally be colored as being
specifically binary or string data, which guarantees that they'll be
converted to `Binary` or `String` appropriately on `into_value()`,
making them compatible with `Type` guarantees. This makes them
significantly more broadly usable for command input and output.
There is still an `Unknown` type for byte streams coming from external
commands, which uses the same behavior as we previously did where it's a
string if it's UTF-8.
A small number of commands were updated to take advantage of this, just
to prove the point. I will be adding more after this merges.
# User-Facing Changes
- New types in `describe`: `string (stream)`, `binary (stream)`
- These commands now return a stream if their input was a stream:
- `into binary`
- `into string`
- `bytes collect`
- `str join`
- `first` (binary)
- `last` (binary)
- `take` (binary)
- `skip` (binary)
- Streams that are explicitly binary colored will print as a streaming
hexdump
- example:
```nushell
1.. | each { into binary } | bytes collect
```
# Tests + Formatting
I've added some tests to cover it at a basic level, and it doesn't break
anything existing, but I do think more would be nice. Some of those will
come when I modify more commands to stream.
# After Submitting
There are a few things I'm not quite satisfied with:
- **String trimming behavior.** We automatically trim newlines from
streams from external commands, but I don't think we should do this with
internal commands. If I call a command that happens to turn my string
into a stream, I don't want the newline to suddenly disappear. I changed
this to specifically do it only on `Child` and `File`, but I don't know
if this is quite right, and maybe we should bring back the old flag for
`trim_end_newline`
- **Known binary always resulting in a hexdump.** It would be nice to
have a `print --raw`, so that we can put binary data on stdout
explicitly if we want to. This PR doesn't change how external commands
work though - they still dump straight to stdout.
Otherwise, here's the normal checklist:
- [ ] release notes
- [ ] docs update for plugin protocol changes (added `type` field)
---------
Co-authored-by: Ian Manske <ian.manske@pm.me>
# Description
There is a bug when `hide-env` is used on environment variables that
were present at shell startup. Namely, child processes still inherit the
hidden environment variable. This PR fixes#12900, fixes#11495, and
fixes#7937.
# Tests + Formatting
Added a test.
# Description
This PR introduces a `ByteStream` type which is a `Read`-able stream of
bytes. Internally, it has an enum over three different byte stream
sources:
```rust
pub enum ByteStreamSource {
Read(Box<dyn Read + Send + 'static>),
File(File),
Child(ChildProcess),
}
```
This is in comparison to the current `RawStream` type, which is an
`Iterator<Item = Vec<u8>>` and has to allocate for each read chunk.
Currently, `PipelineData::ExternalStream` serves a weird dual role where
it is either external command output or a wrapper around `RawStream`.
`ByteStream` makes this distinction more clear (via `ByteStreamSource`)
and replaces `PipelineData::ExternalStream` in this PR:
```rust
pub enum PipelineData {
Empty,
Value(Value, Option<PipelineMetadata>),
ListStream(ListStream, Option<PipelineMetadata>),
ByteStream(ByteStream, Option<PipelineMetadata>),
}
```
The PR is relatively large, but a decent amount of it is just repetitive
changes.
This PR fixes#7017, fixes#10763, and fixes#12369.
This PR also improves performance when piping external commands. Nushell
should, in most cases, have competitive pipeline throughput compared to,
e.g., bash.
| Command | Before (MB/s) | After (MB/s) | Bash (MB/s) |
| -------------------------------------------------- | -------------:|
------------:| -----------:|
| `throughput \| rg 'x'` | 3059 | 3744 | 3739 |
| `throughput \| nu --testbin relay o> /dev/null` | 3508 | 8087 | 8136 |
# User-Facing Changes
- This is a breaking change for the plugin communication protocol,
because the `ExternalStreamInfo` was replaced with `ByteStreamInfo`.
Plugins now only have to deal with a single input stream, as opposed to
the previous three streams: stdout, stderr, and exit code.
- The output of `describe` has been changed for external/byte streams.
- Temporary breaking change: `bytes starts-with` no longer works with
byte streams. This is to keep the PR smaller, and `bytes ends-with`
already does not work on byte streams.
- If a process core dumped, then instead of having a `Value::Error` in
the `exit_code` column of the output returned from `complete`, it now is
a `Value::Int` with the negation of the signal number.
# After Submitting
- Update docs and book as necessary
- Release notes (e.g., plugin protocol changes)
- Adapt/convert commands to work with byte streams (high priority is
`str length`, `bytes starts-with`, and maybe `bytes ends-with`).
- Refactor the `tee` code, Devyn has already done some work on this.
---------
Co-authored-by: Devyn Cairns <devyn.cairns@gmail.com>
# Description
Does some misc changes to `ListStream`:
- Moves it into its own module/file separate from `RawStream`.
- `ListStream`s now have an associated `Span`.
- This required changes to `ListStreamInfo` in `nu-plugin`. Note sure if
this is a breaking change for the plugin protocol.
- Hides the internals of `ListStream` but also adds a few more methods.
- This includes two functions to more easily alter a stream (these take
a `ListStream` and return a `ListStream` instead of having to go through
the whole `into_pipeline_data(..)` route).
- `map`: takes a `FnMut(Value) -> Value`
- `modify`: takes a function to modify the inner stream.
# Description
This adds an extension trait to `Result` that wraps errors in `Spanned`,
saving the effort of calling `.map_err(|err| err.into_spanned(span))`
every time. This will hopefully make it even more likely that someone
will want to use a spanned `io::Error` and make it easier to remove the
impl for `From<io::Error> for ShellError` because that doesn't have span
information.
