Commit Graph

691 Commits

Author SHA1 Message Date
Marc Schreiber
e7bdd08a04
Send LSP Completion Item Kind (#11443)
# Description

This commit fills in the completion item kind into the
`textDocument/completion` response so that LSP client can present more
information to the user.

It is an improvement in the context of #10794

# User-Facing Changes

Improved information display in editor's intelli-sense menu


![output](https://github.com/nushell/nushell/assets/16558417/991dc0a9-45d1-4718-8f22-29002d687b93)
2024-03-24 20:14:12 -05:00
Auca Coyan
b3721a24fa
🐛 remove 3 backticks messing the hover (#12273)
# Description

The hover was bugged with 3 backticks. I don't understand how it worked
before, but this apparently now works correctly on my machine. This is
really puzzling. My next step is to make a test to assert this will
break a little less. I fixed it 3 times in the past

# Tests + Formatting

Added a test to be sure this doesn't breaks again 😄 (at least from
nushell/nushell side)
2024-03-24 14:15:01 -05:00
YizhePKU
ef05d1419d
Fix: missing parse error when extra tokens are given to let bindings (#12238)
Manual checks are added to `parse_let`, `parse_mut`, and `parse_const`.
`parse_var_with_opt_type` is also fixed to update `spans_idx` correctly.
Fixes #12125.

It's technically a fix, but I'd rather not merge this directly. I'm
making this PR to bring into attention the code quality of the parser
code. For example:

* Inconsistent usage of `spans_idx`. What is its purpose, and which
parsing functions need it? I suspect it's possible to remove the usage
of `spans_idx` entirely.
* Lacking documentation for top-level functions. What does `mutable`
mean for `parse_var_with_opt_type()`?
* Inconsistent error reporting. Usage of both `working_set.error()` and
`working_set.parse_errors.push()`. Using `ParseError::Expected` for an
invalid variable name when there's `ParseError::VariableNotValid` (from
`parser.rs:5237`). Checking variable names manually when there's
`is_variable()` (from `parser.rs:2905`).
* `span()` is a terrible name for a function that flattens a bunch of
spans into one (from `nu-protocal/src/span.rs:92`). The top-level
comment (`Used when you have a slice of spans of at least size 1`)
doesn't help either.

I've only looked at a small portion of the parser code; I expect there
are a lot more. These issues made it much harder to fix a simple bug
like #12125. I believe we should invest some effort to cleanup the
parser code, which will ease maintainance in the future. I'll willing to
help if there is interest.
2024-03-21 10:37:52 -05:00
dannou812
8237d15683
to json -r not removing whitespaces fix (#11948)
fixes #11900  

# Description
Use `serde_json` instead.

# User-Facing Changes
The problem described in the issue now no longer persists.

No whitespace in the output of `to json --raw`
Output of unicode escape changed to consistent `\uffff`

# Tests + Formatting
I corrected all Tests that were affected by this change.
2024-03-20 22:14:31 +01:00
Devyn Cairns
a29efe28f7
Merge stream_example into example plugin and clean up names (#12234)
# Description

As suggested by @WindSoilder, since plugins can now contain both simple
commands that produce `Value` and commands that produce `PipelineData`
without having to choose one or the other for the whole plugin, this
change merges `stream_example` into `example`.

# User-Facing Changes

All of the example plugins are renamed.

# Tests + Formatting

- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting

- [ ] Check nushell/nushell.github.io for any docs that match the
command names changed
2024-03-19 12:36:46 -05:00
Devyn Cairns
931f522616
Support into string for custom values (#12231)
Context: @abusch is working on a semver plugin with custom values and
wants users to be able to convert them back to strings

# Description
This allows `into string` to work on custom values if their base value
representation could be converted into a string with the same rules.

# User-Facing Changes
`into string` works on custom values.

Unfortunately, I couldn't really demo this with an example, because
there aren't any custom values that can be represented that way
included.

# Tests + Formatting
I was able to write a test using the custom values plugin.

- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
2024-03-19 11:00:22 +01:00
Devyn Cairns
992359a191
Support for custom values in plugin examples (#12213)
# Description
@ayax79 says that the dataframe commands all have dataframe custom
values in their examples, and they're used for tests.

Rather than send the custom values to the engine, if they're in
examples, this change just renders them using `to_base_value()` first.
That way we avoid potentially having to hold onto custom values in
`plugins.nu` that might not be valid indefinitely - as will be the case
for dataframes in particular - but we still avoid forcing plugin writers
to not use custom values in their examples.

# User-Facing Changes
- Custom values usable in plugin examples

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
2024-03-18 07:34:21 -05:00
Devyn Cairns
f6faf73e02
Allow plugins to set environment variables in their caller's scope (#12204)
# Description

Adds the `AddEnvVar` plugin call, which allows plugins to set
environment variables in the caller's scope. This is the first engine
call that mutates the caller's stack, and opens the door to more
operations like this if needed.

This also comes with an extra benefit: in doing this, I needed to
refactor how context was handled, and I was able to avoid cloning
`EngineInterface` / `Stack` / `Call` in most cases that plugin calls are
used. They now only need to be cloned if the plugin call returns a
stream. The performance increase is welcome (5.5x faster on `inc`!):

```nushell
# Before
> timeit { 1..100 | each { |i| $"2.0.($i)" | inc -p } }
405ms 941µs 952ns
# After
> timeit { 1..100 | each { |i| $"2.0.($i)" | inc -p } }
73ms 68µs 749ns
```

# User-Facing Changes
- New engine call: `add_env_var()`
- Performance enhancement for plugin calls

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
- [x] Document env manipulation in plugins guide
- [x] Document `AddEnvVar` in plugin protocol
2024-03-15 06:45:45 -05:00
Devyn Cairns
9cf2e873b5
Reorganize plugin API around commands (#12170)
[Context on
Discord](https://discord.com/channels/601130461678272522/855947301380947968/1216517833312309419)

# Description
This is a significant breaking change to the plugin API, but one I think
is worthwhile. @ayax79 mentioned on Discord that while trying to start
on a dataframes plugin, he was a little disappointed that more wasn't
provided in terms of code organization for commands, particularly since
there are *a lot* of `dfr` commands.

This change treats plugins more like miniatures of the engine, with
dispatch of the command name being handled inherently, each command
being its own type, and each having their own signature within the trait
impl for the command type rather than having to find a way to centralize
it all into one `Vec`.

For the example plugins that have multiple commands, I definitely like
how this looks a lot better. This encourages doing code organization the
right way and feels very good.

For the plugins that have only one command, it's just a little bit more
boilerplate - but still worth it, in my opinion.

The `Box<dyn PluginCommand<Plugin = Self>>` type in `commands()` is a
little bit hairy, particularly for Rust beginners, but ultimately not so
bad, and it gives the desired flexibility for shared state for a whole
plugin + the individual commands.

# User-Facing Changes
Pretty big breaking change to plugin API, but probably one that's worth
making.

```rust
use nu_plugin::*;
use nu_protocol::{PluginSignature, PipelineData, Type, Value};

struct LowercasePlugin;
struct Lowercase;

// Plugins can now have multiple commands
impl PluginCommand for Lowercase {
    type Plugin = LowercasePlugin;

    // The signature lives with the command
    fn signature(&self) -> PluginSignature {
        PluginSignature::build("lowercase")
            .usage("Convert each string in a stream to lowercase")
            .input_output_type(Type::List(Type::String.into()), Type::List(Type::String.into()))
    }

    // We also provide SimplePluginCommand which operates on Value like before
    fn run(
        &self,
        plugin: &LowercasePlugin,
        engine: &EngineInterface,
        call: &EvaluatedCall,
        input: PipelineData,
    ) -> Result<PipelineData, LabeledError> {
        let span = call.head;
        Ok(input.map(move |value| {
            value.as_str()
                .map(|string| Value::string(string.to_lowercase(), span))
                // Errors in a stream should be returned as values.
                .unwrap_or_else(|err| Value::error(err, span))
        }, None)?)
    }
}

// Plugin now just has a list of commands, and the custom value op stuff still goes here
impl Plugin for LowercasePlugin {
    fn commands(&self) -> Vec<Box<dyn PluginCommand<Plugin=Self>>> {
        vec![Box::new(Lowercase)]
    }
}

fn main() {
    serve_plugin(&LowercasePlugin{}, MsgPackSerializer)
}
```

Time this however you like - we're already breaking stuff for 0.92, so
it might be good to do it now, but if it feels like a lot all at once,
it could wait.

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
- [ ] Update examples in the book
- [x] Fix #12088 to match - this change would actually simplify it a
lot, because the methods are currently just duplicated between `Plugin`
and `StreamingPlugin`, but they only need to be on `Plugin` with this
change
2024-03-14 16:40:02 -05:00
Ian Manske
b6c7656194
IO and redirection overhaul (#11934)
# Description
The PR overhauls how IO redirection is handled, allowing more explicit
and fine-grain control over `stdout` and `stderr` output as well as more
efficient IO and piping.

To summarize the changes in this PR:
- Added a new `IoStream` type to indicate the intended destination for a
pipeline element's `stdout` and `stderr`.
- The `stdout` and `stderr` `IoStream`s are stored in the `Stack` and to
avoid adding 6 additional arguments to every eval function and
`Command::run`. The `stdout` and `stderr` streams can be temporarily
overwritten through functions on `Stack` and these functions will return
a guard that restores the original `stdout` and `stderr` when dropped.
- In the AST, redirections are now directly part of a `PipelineElement`
as a `Option<Redirection>` field instead of having multiple different
`PipelineElement` enum variants for each kind of redirection. This
required changes to the parser, mainly in `lite_parser.rs`.
- `Command`s can also set a `IoStream` override/redirection which will
apply to the previous command in the pipeline. This is used, for
example, in `ignore` to allow the previous external command to have its
stdout redirected to `Stdio::null()` at spawn time. In contrast, the
current implementation has to create an os pipe and manually consume the
output on nushell's side. File and pipe redirections (`o>`, `e>`, `e>|`,
etc.) have precedence over overrides from commands.

This PR improves piping and IO speed, partially addressing #10763. Using
the `throughput` command from that issue, this PR gives the following
speedup on my setup for the commands below:
| Command | Before (MB/s) | After (MB/s) | Bash (MB/s) |
| --------------------------- | -------------:| ------------:|
-----------:|
| `throughput o> /dev/null` | 1169 | 52938 | 54305 |
| `throughput \| ignore` | 840 | 55438 | N/A |
| `throughput \| null` | Error | 53617 | N/A |
| `throughput \| rg 'x'` | 1165 | 3049 | 3736 |
| `(throughput) \| rg 'x'` | 810 | 3085 | 3815 |

(Numbers above are the median samples for throughput)

This PR also paves the way to refactor our `ExternalStream` handling in
the various commands. For example, this PR already fixes the following
code:
```nushell
^sh -c 'echo -n "hello "; sleep 0; echo "world"' | find "hello world"
```
This returns an empty list on 0.90.1 and returns a highlighted "hello
world" on this PR.

Since the `stdout` and `stderr` `IoStream`s are available to commands
when they are run, then this unlocks the potential for more convenient
behavior. E.g., the `find` command can disable its ansi highlighting if
it detects that the output `IoStream` is not the terminal. Knowing the
output streams will also allow background job output to be redirected
more easily and efficiently.

# User-Facing Changes
- External commands returned from closures will be collected (in most
cases):
  ```nushell
  1..2 | each {|_| nu -c "print a" }
  ```
This gives `["a", "a"]` on this PR, whereas this used to print "a\na\n"
and then return an empty list.

  ```nushell
  1..2 | each {|_| nu -c "print -e a" }
  ```
This gives `["", ""]` and prints "a\na\n" to stderr, whereas this used
to return an empty list and print "a\na\n" to stderr.

- Trailing new lines are always trimmed for external commands when
piping into internal commands or collecting it as a value. (Failure to
decode the output as utf-8 will keep the trailing newline for the last
binary value.) In the current nushell version, the following three code
snippets differ only in parenthesis placement, but they all also have
different outputs:

  1. `1..2 | each { ^echo a }`
     ```
     a
     a
     ╭────────────╮
     │ empty list │
     ╰────────────╯
     ```
  2. `1..2 | each { (^echo a) }`
     ```
     ╭───┬───╮
     │ 0 │ a │
     │ 1 │ a │
     ╰───┴───╯
     ```
  3. `1..2 | (each { ^echo a })`
     ```
     ╭───┬───╮
     │ 0 │ a │
     │   │   │
     │ 1 │ a │
     │   │   │
     ╰───┴───╯
     ```

  But in this PR, the above snippets will all have the same output:
  ```
  ╭───┬───╮
  │ 0 │ a │
  │ 1 │ a │
  ╰───┴───╯
  ```

- All existing flags on `run-external` are now deprecated.

- File redirections now apply to all commands inside a code block:
  ```nushell
  (nu -c "print -e a"; nu -c "print -e b") e> test.out
  ```
This gives "a\nb\n" in `test.out` and prints nothing. The same result
would happen when printing to stdout and using a `o>` file redirection.

- External command output will (almost) never be ignored, and ignoring
output must be explicit now:
  ```nushell
  (^echo a; ^echo b)
  ```
This prints "a\nb\n", whereas this used to print only "b\n". This only
applies to external commands; values and internal commands not in return
position will not print anything (e.g., `(echo a; echo b)` still only
prints "b").

- `complete` now always captures stderr (`do` is not necessary).

# After Submitting
The language guide and other documentation will need to be updated.
2024-03-14 15:51:55 -05:00
Devyn Cairns
ad2fd520ca
MsgPack deserializer: improve handling of EOF (#12183)
# Description

`rmp_serde` has two kinds of errors that contain I/O errors, and an EOF
can occur inside either of them, but we were only treating an EOF inside
an `InvalidMarkerRead` as an EOF, which would make sense for the
beginning of a message.

However, we should also treat an incomplete message + EOF as an EOF.
There isn't really any point in reporting that an EOF was received
mid-message.

This should fix the issue where the
`seq_describe_no_collect_succeeds_without_error` test would sometimes
fail, as doing a `describe --no-collect` followed by nushell exiting
could (but was not guaranteed to) cause this exact scenario.

# User-Facing Changes
Will probably remove useless `read error` messages from plugins after
exit of `nu`

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
2024-03-13 06:49:53 -05:00
Devyn Cairns
be841d88d7
More robustness improvements to plugin persistence tests (#12185)
# Description

These tests have been causing some pain, so I've done a few more things
to try to make them a bit more tolerant of running slowly.

- `plugin_process_exits_after_stop`: using timeout strategy, allows the
process 5 seconds to exit.

- generally don't use sleep to test anything less than 100ms

# User-Facing Changes


# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
2024-03-13 06:43:17 -05:00
Devyn Cairns
e1cfc96ee8
Fix locking soundness in PersistentPlugin (#12182)
# Description

There were two problems in `PersistentPlugin` which could cause a
deadlock:

1. There were two mutexes being used, and `get()` could potentially hold
both simultaneously if it had to spawn. This won't necessarily cause a
deadlock on its own, but it does mean that lock order is sensitive

2. `set_gc_config()` called `flush()` while still holding the lock,
meaning that the GC thread had to proceed before the lock was released.
However, waiting for the GC thread to proceed could mean waiting for the
GC thread to call `stop()`, which itself would try to lock the mutex.
So, it's not safe to wait for the GC thread while the lock is held. This
is fixed now.

I've also reverted #12177, as @IanManske reported that this was also
happening for him on Linux, and it seems to be this problem which should
not be platform-specific at all. I believe this solves it.

# User-Facing Changes
None

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
2024-03-12 18:22:29 -05:00
Devyn Cairns
ad4ca61860
Disable plugin GC tests on macOS (#12177)
# Description
These are hanging the CI sometimes, and that's no good. I'll try to
figure out how to make these tests pass consistently in the meantime.

# User-Facing Changes
I haven't heard any feedback so far that the plugin GC doesn't actually
work on macOS, so hopefully it's not a big problem, but we won't know
until I'm able to track down the problem.


# After Submitting
- [ ] Fix the tests so they don't get stuck
2024-03-12 20:43:26 +01:00
Devyn Cairns
390a7e3f0b
Add environment engine calls for plugins (#12166)
# Description

This adds three engine calls: `GetEnvVar`, `GetEnvVars`, for getting
environment variables from the plugin command context, and
`GetCurrentDir` for getting the current working directory.

Plugins are now launched in the directory of their executable to try to
make improper use of the current directory without first setting it more
obvious. Plugins previously launched in whatever the current directory
of the engine was at the time the plugin command was run, but switching
to persistent plugins broke this, because they stay in whatever
directory they launched in initially.

This also fixes the `gstat` plugin to use `get_current_dir()` to
determine its repo location, which was directly affected by this
problem.

# User-Facing Changes
- Adds new engine calls (`GetEnvVar`, `GetEnvVars`, `GetCurrentDir`)
- Runs plugins in a different directory from before, in order to catch
bugs
- Plugins will have to use the new engine calls if they do filesystem
stuff to work properly

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
- [ ] Document the working directory behavior on plugin launch
- [ ] Document the new engine calls + response type (`ValueMap`)
2024-03-12 06:34:32 -05:00
Devyn Cairns
73f3c0b60b
Support for all custom value operations on plugin custom values (#12088)
# Description

Adds support for the following operations on plugin custom values, in
addition to `to_base_value` which was already present:

- `follow_path_int()`
- `follow_path_string()`
- `partial_cmp()`
- `operation()`
- `Drop` (notification, if opted into with
`CustomValue::notify_plugin_on_drop`)

There are additionally customizable methods within the `Plugin` and
`StreamingPlugin` traits for implementing these functions in a way that
requires access to the plugin state, as a registered handle model such
as might be used in a dataframes plugin would.

`Value::append` was also changed to handle custom values correctly.

# User-Facing Changes

- Signature of `CustomValue::follow_path_string` and
`CustomValue::follow_path_int` changed to give access to the span of the
custom value itself, useful for some errors.
- Plugins using custom values have to be recompiled because the engine
will try to do custom value operations that aren't supported
- Plugins can do more things 🎉 

# Tests + Formatting
Tests were added for all of the new custom values functionality.

- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting
- [ ] Document protocol reference `CustomValueOp` variants:
  - [ ] `FollowPathInt`
  - [ ] `FollowPathString`
  - [ ] `PartialCmp`
  - [ ] `Operation`
  - [ ] `Dropped`
- [ ] Document `notify_on_drop` optional field in `PluginCustomValue`
2024-03-12 10:37:08 +01:00
Devyn Cairns
afce380530
Make the plugin persistence GC delay test more reliable (#12153)
# Description

This makes the test a bit more complicated, but implements a timeout
loop in the script. As long as the test completes in 5 seconds it's
considered to be ok. The default is 10 seconds, so that would still be
half that.

This should help with running on the busy CI where things sometimes take
a while. Unfortunately this is a timing sensitive test. The alternative
is basically to just not test this at all because it's too difficult to
guarantee that it will complete in time. If we continue to have issues,
I might just have to take that route instead.
2024-03-11 12:01:48 +01:00
Wind
5596190377
do command: Make closure support default parameters and type checking (#12056)
# Description
Fixes: #11287
Fixes: #11318

It's implemented by porting the similar logic in `eval_call`, I've tried
to reduce duplicate code, but it seems that it's hard without using
macros.

3ee2fc60f9/crates/nu-engine/src/eval.rs (L60-L130)

It only works for `do` command.

# User-Facing Changes
## Closure supports optional parameter
```nushell
let code = {|x?| print ($x | default "i'm the default")}
do $code
```
Previously it raises an error, after this change, it prints `i'm the
default`.

## Closure supports type checking
```nushell
let code = {|x: int| echo $x}
do $code "aa"
```
After this change, it will raise an error with a message: `can't convert
string to int`

# Tests + Formatting
Done

# After Submitting
NaN
2024-03-11 18:11:08 +08:00
Stefan Holderbach
067ceedf79
Remove feat extra and include in default (#12140)
# Description
The intended effect of the `extra` feature has been undermined by
introducing the full builds on our release pages and having more
activity on some of the extra commands.

To simplify the feature matrix let's get rid of it and focus our effort
on truly either refining a command to well-specified behavior or
discarding it entirely from the `nu` binary and moving it into plugins.

## Details
- Remove `--features extra` from CI
- Don't explicitly name `extra` in full build wf
- Remove feature extra from build-help scripts
- Update README in `nu-cmd-extra`
- Remove feature `extra`
- Fix previously dead `format pattern` tests
- Relax signature of `to html`
- Fix/ignore `html::test_no_color_flag`
- Remove dead features from `version`
- Refine `to html` type signature

# User-Facing Changes
The commands that were previously only available when building with
`--features extra` will now be available to everyone. This increases the
number of dependencies slightly but has a limited impact on the overall
binary size.

# Tests + Formatting
Some tests that were left in `nu-command` during cratification were dead
because the feature was not passed to `nu-command` and only to
`nu-cmd-lang` for feature-flag mention in `version`.
Those tests have now been either fixed or ignored in one case.

# After Submitting
There may be places in the documentation where we point to `--features
extra` that will now be moot (apart from the generated command help)
2024-03-10 17:29:02 +01:00
Devyn Cairns
bc19be25b1
Keep plugins persistently running in the background (#12064)
# Description
This PR uses the new plugin protocol to intelligently keep plugin
processes running in the background for further plugin calls.

Running plugins can be seen by running the new `plugin list` command,
and stopped by running the new `plugin stop` command.

This is an enhancement for the performance of plugins, as starting new
plugin processes has overhead, especially for plugins in languages that
take a significant amount of time on startup. It also enables plugins
that have persistent state between commands, making the migration of
features like dataframes and `stor` to plugins possible.

Plugins are automatically stopped by the new plugin garbage collector,
configurable with `$env.config.plugin_gc`:

```nushell
  $env.config.plugin_gc = {
      # Configuration for plugin garbage collection
      default: {
          enabled: true # true to enable stopping of inactive plugins
          stop_after: 10sec # how long to wait after a plugin is inactive to stop it
      }
      plugins: {
          # alternate configuration for specific plugins, by name, for example:
          #
          # gstat: {
          #     enabled: false
          # }
      }
  }
```

If garbage collection is enabled, plugins will be stopped after
`stop_after` passes after they were last active. Plugins are counted as
inactive if they have no running plugin calls. Reading the stream from
the response of a plugin call is still considered to be activity, but if
a plugin holds on to a stream but the call ends without an active
streaming response, it is not counted as active even if it is reading
it. Plugins can explicitly disable the GC as appropriate with
`engine.set_gc_disabled(true)`.

The `version` command now lists plugin names rather than plugin
commands. The list of plugin commands is accessible via `plugin list`.

Recommend doing this together with #12029, because it will likely force
plugin developers to do the right thing with mutability and lead to less
unexpected behavior when running plugins nested / in parallel.

# User-Facing Changes
- new command: `plugin list`
- new command: `plugin stop`
- changed command: `version` (now lists plugin names, rather than
commands)
- new config: `$env.config.plugin_gc`
- Plugins will keep running and be reused, at least for the configured
GC period
- Plugins that used mutable state in weird ways like `inc` did might
misbehave until fixed
- Plugins can disable GC if they need to
- Had to change plugin signature to accept `&EngineInterface` so that
the GC disable feature works. #12029 does this anyway, and I'm expecting
(resolvable) conflicts with that

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

Because there is some specific OS behavior required for plugins to not
respond to Ctrl-C directly, I've developed against and tested on both
Linux and Windows to ensure that works properly.

# After Submitting
I think this probably needs to be in the book somewhere
2024-03-09 17:10:22 -06:00
Devyn Cairns
430fb1fcb6
Add support for engine calls from plugins (#12029)
# Description

This allows plugins to make calls back to the engine to get config,
evaluate closures, and do other things that must be done within the
engine process.

Engine calls can both produce and consume streams as necessary. Closures
passed to plugins can both accept stream input and produce stream output
sent back to the plugin.

Engine calls referring to a plugin call's context can be processed as
long either the response hasn't been received, or the response created
streams that haven't ended yet.

This is a breaking API change for plugins. There are some pretty major
changes to the interface that plugins must implement, including:

1. Plugins now run with `&self` and must be `Sync`. Executing multiple
plugin calls in parallel is supported, and there's a chance that a
closure passed to a plugin could invoke the same plugin. Supporting
state across plugin invocations is left up to the plugin author to do in
whichever way they feel best, but the plugin object itself is still
shared. Even though the engine doesn't run multiple plugin calls through
the same process yet, I still considered it important to break the API
in this way at this stage. We might want to consider an optional
threadpool feature for performance.

2. Plugins take a reference to `EngineInterface`, which can be cloned.
This interface allows plugins to make calls back to the engine,
including for getting config and running closures.

3. Plugins no longer take the `config` parameter. This can be accessed
from the interface via the `.get_plugin_config()` engine call.


# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
Not only does this have plugin protocol changes, it will require plugins
to make some code changes before they will work again. But on the plus
side, the engine call feature is extensible, and we can add more things
to it as needed.

Plugin maintainers will have to change the trait signature at the very
least. If they were using `config`, they will have to call
`engine.get_plugin_config()` instead.

If they were using the mutable reference to the plugin, they will have
to come up with some strategy to work around it (for example, for `Inc`
I just cloned it). This shouldn't be such a big deal at the moment as
it's not like plugins have ever run as daemons with persistent state in
the past, and they don't in this PR either. But I thought it was
important to make the change before we support plugins as daemons, as an
exclusive mutable reference is not compatible with parallel plugin
calls.

I suggest this gets merged sometime *after* the current pending release,
so that we have some time to adjust to the previous plugin protocol
changes that don't require code changes before making ones that do.

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`


# After Submitting
I will document the additional protocol features (`EngineCall`,
`EngineCallResponse`), and constraints on plugin call processing if
engine calls are used - basically, to be aware that an engine call could
result in a nested plugin call, so the plugin should be able to handle
that.
2024-03-09 11:26:30 -06:00
Yash Thakur
c90640411d
Update tests Playground (#12134)
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# Description
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It looks like `Playground` and `Director` in nu-tests-support haven't
gotten much love recently, so this PR is for updating them to work with
newer Nushell versions.

- `Director` adds a `--skip-plugins` argument before running `nu`, but
that doesn't exist anymore, so I removed it.
- `Director` also adds a `--perf` argument, which also doesn't exist
anymore. I added `--log-level info` instead to get the performance
output.
- It doesn't seem like anyone was using `playground::matchers`, and it
used the [hamcrest2](https://github.com/Valloric/hamcrest2-rust) crate,
which appears to be unmaintained, so I got rid of that (and the
`hamcrest2` dependency).
- Inside `tests/fixtures/playground/config` were two files in the old
config format: `default.toml` and `startup.toml`. I removed those too.

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

None, these changes only mess with tests.

# Tests + Formatting
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crates/nu-std"` to run the tests for the standard library

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# After Submitting
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2024-03-08 20:31:21 -08:00
Yash Thakur
98525043ed
Fix const string interpolation test (#12038)
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# Description
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Currently, in the test for interpolating strings at parse-time, the
formatted string includes `(X years ago)` (from formatting a date) (test
came from https://github.com/nushell/nushell/pull/11562). I didn't
realize when I was writing it that it would have to be updated every
year. This PR uses regex to check the output instead.

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

# Tests + Formatting
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sure to [enable developer
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crates/nu-std"` to run the tests for the standard library

> **Note**
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> toolkit check pr
> ```
-->

# After Submitting
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2024-03-01 16:35:07 -08:00
Wind
387328fe73
Glob: don't allow implicit casting between glob and string (#11992)
# Description
As title, currently on latest main, nushell confused user if it allows
implicit casting between glob and string:
```nushell
let x = "*.txt"
def glob-test [g: glob] { open $g } 
glob-test $x
```
It always expand the glob although `$x` is defined as a string.
This pr implements a solution from @kubouch :
> We could make it really strict and disallow all autocasting between
globs and strings because that's what's causing the "magic" confusion.
Then, modify all builtins that accept globs to accept oneof(glob,
string) and the rules would be that globs always expand and strings
never expand

# User-Facing Changes
After this pr, user needs to use `into glob` to invoke `glob-test`, if
user pass a string variable:
```nushell
let x = "*.txt"
def glob-test [g: glob] { open $g } 
glob-test ($x | into glob)
```
Or else nushell will return an error.
```
 3 │ glob-test $x
   ·           ─┬
   ·            ╰── can't convert string to glob
```

# Tests + Formatting
Done

# After Submitting
Nan
2024-02-28 23:05:35 +08:00
Wind
eaedb30a8c
Don't expanding globs if user pass variables. (#11946)
# Description
Fixes: #11912

# User-Facing Changes
After this change: 
```
let x = '*.nu'; ^echo $x
```
will no longer expand glob.
If users still want to expand glob, there are also 3 ways to do this:
```
# 1. use spread operation with `glob` command
let x = '*.nu'; ^echo ...(glob $x)
```
# Tests + Formatting
Done

# After Submitting
NaN
2024-02-28 23:05:09 +08:00
Filip Andersson
0aae485395
Fixes test 1 year more. (#11994)
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# Description
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The test checks the time that has passed, bumped year by 1.


# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

# Tests + Formatting
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sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
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crates/nu-std"` to run the tests for the standard library

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# After Submitting
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2024-02-27 08:55:37 -06:00
132ikl
f4d9ddd3ad
Fix completions for directories with hidden files (#11921)
# Description
Attempting to complete a directory with hidden files could cause a
variety of issues. When Rust parses the partial path to be completed
into components, it removes the trailing `.` since it interprets this to
mean "the current directory", but in the case of the completer we
actually want to treat the trailling `.` as a literal `.`. This PR fixes
this by adding a `.` back into the Path components if the last character
of the path is a `.` AND the path is longer than 1 character (eg., not
just a ".", since that correctly gets interpreted as Component::CurDir).

Here are some things this fixes:
- Panic when tab completing for hidden files in a directory with hidden
files (ex. `ls test/.`)
- Panic when tab completing a directory with only hidden files (since
the common prefix ends with a `.`, causing the previous issue)
- Mishandling of tab completing hidden files in directory (ex. `ls
~/.<TAB>` lists all files instead of just hidden files)
- Trailing `.` being inexplicably removed when tab completing a
directory without hidden files

While testing for this PR I also noticed there is a similar issue when
completing with `..` (ex. `ls ~/test/..<TAB>`) which is not fixed by
this PR (edit: see #11922).

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
N/A

# Tests + Formatting
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sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
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crates/nu-std"` 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
automatically
> toolkit check pr
> ```
-->
Added a hidden-files-within-directories test to the `file_completions`
test.

# After Submitting
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2024-02-26 12:14:19 -06:00
Devyn Cairns
88f1f386bb
Bidirectional communication and streams for plugins (#11911) 2024-02-25 16:32:50 -06:00
Wind
1058707a29
make stderr works for failed external command (#11914)
# Description
Fixes: #11913

When running external command, nushell shouldn't consumes stderr
messages, if user want to redirect stderr.

# User-Facing Changes
NaN

# Tests + Formatting
Done

# After Submitting
NaN
2024-02-21 21:15:05 +08:00
Wind
58c6fea60b
Support redirect stderr and stdout+stderr with a pipe (#11708)
# Description
Close: #9673
Close: #8277
Close: #10944

This pr introduces the following syntax:
1. `e>|`, pipe stderr to next command. Example: `$env.FOO=bar nu
--testbin echo_env_stderr FOO e>| str length`
2. `o+e>|` and `e+o>|`, pipe both stdout and stderr to next command,
example: `$env.FOO=bar nu --testbin echo_env_mixed out-err FOO FOO e+o>|
str length`

Note: it only works for external commands. ~There is no different for
internal commands, that is, the following three commands do the same
things:~ Edit: it raises errors if we want to pipes for internal
commands
``` 
❯ ls e>| str length
Error:   × `e>|` only works with external streams
   ╭─[entry #1:1:1]
 1 │ ls e>| str length
   ·    ─┬─
   ·     ╰── `e>|` only works on external streams
   ╰────

❯ ls e+o>| str length
Error:   × `o+e>|` only works with external streams
   ╭─[entry #2:1:1]
 1 │ ls e+o>| str length
   ·    ──┬──
   ·      ╰── `o+e>|` only works on external streams
   ╰────
```

This can help us to avoid some strange issues like the following:

`$env.FOO=bar (nu --testbin echo_env_stderr FOO) e>| str length`

Which is hard to understand and hard to explain to users.

# User-Facing Changes
Nan

# Tests + Formatting
To be done

# After Submitting
Maybe update documentation about these syntax.
2024-02-09 01:30:46 +08:00
Andrej Kolchin
fb7f6fc08b
Fix a panic when parsing empty file (#11314)
The previous implementation presumed that if files were given, they had
contents. The change makes the fallback to permanent files uniform.

Fix #11256
2024-02-07 18:47:44 -06:00
Wind
20aa59085b
Fix file completions which contains glob pattern (#11766)
# Description
Fixes: https://github.com/nushell/nushell/issues/11762

The auto-completion is somehow annoying if a path contains a glob
pattern, let's say if user type `ls` and it auto-completes to <code>ls
`[a] bc.txt`</code>, and user can't list the file because it's backtick
quoted.

This pr is going to fix it.

# User-Facing Changes
### Before
```
❯ | ls
`[a] bc.txt`        `a bc`
```
### After
```
❯ | ls
"[a] bc.txt"        `a bc`
```
# Tests + Formatting
Done

# After Submitting
NaN
2024-02-08 06:42:50 +08:00
Antoine Stevan
859f7b3dc7
add $.extra_usage to modules (#11649)
- should fix https://github.com/nushell/nushell/issues/11648

# Description
this PR
- adds a test that should pass but fails
- adds `$.extra_usage` to the output of `scope modules`, fixing both the
new test and the linked issue

# User-Facing Changes
`$.extra_usage` is now a column in the output of `scope modules`

# Tests + Formatting
a new test case has been added to `correct_scope_modules_fields`

# After Submitting
2024-01-27 17:49:21 +02:00
Artemiy
092d496ff5
Plugin explicit flags (#11581)
# Description
#11492 fixed flags for builtin commands but I missed that plugins don't
use the same `has_flag` that builtins do. This PR addresses this.

Unfortunately this means that return value of `has_flag` needs to change
from `bool` to `Result<bool, ShellError>` to produce an error when
explicit value is not a boolean (just like in case of `has_flag` for
builtin commands. It is not possible to check this in
`EvaluatedCall::try_from_call` because

# User-Facing Changes
Passing explicit values to flags of plugin commands (like `--flag=true`
`--flag=false`) should work now.
BREAKING: changed return value of `EvaluatedCall::has_flag` method from
`bool` to `Result<bool, ShellError>`

# Tests + Formatting
Added tests and updated documentation and examples
2024-01-22 15:00:43 -06:00
Yash Thakur
90d65bb987
Evaluate string interpolation at parse time (#11562)
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Closes #11561

# Description
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This PR will allow string interpolation at parse time.

Since the actual config hasn't been loaded at parse time, this uses the
`get_config()` method on `StateWorkingSet`. So file sizes and datetimes
(I think those are the only things whose string representations depend
on the config) may be formatted differently from how users have
configured things, which may come as a surprise to some. It does seem
unlikely that anyone would be formatting file sizes or date times at
parse time. Still, something to think about if/before this PR merged.

Also, I changed the `ModuleNotFound` error to include the name of the
module.

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

Users will be able to do stuff like:

```nu
const x = [1 2 3]
const y = $"foo($x)" // foo[1, 2, 3]
```

The main use case is `use`-ing and `source`-ing files at parse time:

```nu
const file = "foo.nu"
use $"($file)"
```

If the module isn't found, you'll see an error like this:
```
Error: nu::parser::module_not_found

  × Module not found.
   ╭─[entry #3:1:1]
 1 │  use $"($file)"
   ·      ─────┬────
   ·           ╰── module foo.nu not found
   ╰────
  help: module files and their paths must be available before your script is run as parsing occurs before anything is evaluated
```

# Tests + Formatting
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> use toolkit.nu # or use an `env_change` hook to activate it
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# After Submitting
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Although there's user-facing changes, there's probably no need to change
the docs since people probably already expect string interpolation to
work at parse time.

Edit: @kubouch pointed out that we'd need to document the fact that
stuff like file sizes and datetimes won't get formatted according to
user's runtime configs, so I'll make a PR to nushell.github.io after
this one
2024-01-22 09:13:48 +02:00
Eric Hodel
7071617f18
Allow plugins to receive configuration from the nushell configuration (#10955)
# Description

When nushell calls a plugin it now sends a configuration `Value` from
the nushell config under `$env.config.plugins.PLUGIN_SHORT_NAME`. This
allows plugin authors to read configuration provided by plugin users.

The `PLUGIN_SHORT_NAME` must match the registered filename after
`nu_plugin_`. If you register `target/debug/nu_plugin_config` the
`PLUGIN_NAME` will be `config` and the nushell config will loook like:

        $env.config = {
          # ...
          plugins: {
            config: [
              some
              values
            ]
          }
        }

Configuration may also use a closure which allows passing values from
`$env` to a plugin:

        $env.config = {
          # ...
          plugins: {
            config: {||
              $env.some_value
            }
          }
        }

This is a breaking change for the plugin API as the `Plugin::run()`
function now accepts a new configuration argument which is an
`&Option<Value>`. If no configuration was supplied the value is `None`.

Plugins compiled after this change should work with older nushell, and
will behave as if the configuration was not set.

Initially discussed in #10867

# User-Facing Changes

* Plugins can read configuration data stored in `$env.config.plugins`
* The plugin `CallInfo` now includes a `config` entry, existing plugins
will require updates

# Tests + Formatting

- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting

- [ ] Update [Creating a plugin (in
Rust)](https://www.nushell.sh/contributor-book/plugins.html#creating-a-plugin-in-rust)
[source](https://github.com/nushell/nushell.github.io/blob/main/contributor-book/plugins.md)
- [ ] Add "Configuration" section to [Plugins
documentation](https://www.nushell.sh/contributor-book/plugins.html)
2024-01-15 16:59:47 +08:00
Marc Schreiber
41119d3f88
Fix "Char index out of bounds" Error (#11526)
# Description

The code that converts Nushell's span into LSP line and character
indices accidentally treated the span as character indices while they
are byte indices. Fixes #11522.

# User-Facing Changes

None, just a bugfix.
2024-01-11 15:24:49 -06:00
Antoine Büsch
1920ece759
fix: closure captures can also be constants (#11493)
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changes.

Description of your pull request goes here. **Provide examples and/or
screenshots** if your changes affect the user experience.
-->
When evaluating a closure (in
`EvalRuntime::eval_row_condition_or_closure()`), we try to resolve the
closure's block's captures, but we only check if they're variables on
the stack. We need to also check if they are constants (see the logic in
`Stack::gather_captures()`).

fixes #10701
# 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 std testing; testing run-tests --path
crates/nu-std"` 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
<!-- If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
-->
2024-01-07 12:51:39 +02:00
tomoda
ad95e4cc27
Refactor tests (using cococo instead of ^echo) (#11479)
- related PR: #11478 

# Description

Now we can use `nu --testbin cococo` instead of `^echo` to echo messages
to stdout in tests.

But `nu` treats parameters as its own flags when parameter starts with
`-`. So `^echo --foo='bar'` still use `^echo`.

# User-Facing Changes

(none)

# Tests + Formatting

- [x] `cargo fmt --all -- --check` to check standard code formatting
(`cargo fmt --all` applies these changes)
- [x] `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used`
to check that you're using the standard code style
- [x] `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))
- [x] `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library


# After Submitting

(none)
2024-01-05 11:40:56 +08:00
Yash Thakur
21b3eeed99
Allow spreading arguments to commands (#11289)
<!--
if this PR closes one or more issues, you can automatically link the PR
with
them by using one of the [*linking
keywords*](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword),
e.g.
- this PR should close #xxxx
- fixes #xxxx

you can also mention related issues, PRs or discussions!
-->

Finishes implementing https://github.com/nushell/nushell/issues/10598,
which asks for a spread operator in lists, in records, and when calling
commands.

# Description
<!--
Thank you for improving Nushell. Please, check our [contributing
guide](../CONTRIBUTING.md) and talk to the core team before making major
changes.

Description of your pull request goes here. **Provide examples and/or
screenshots** if your changes affect the user experience.
-->

This PR will allow spreading arguments to commands (both internal and
external). It will also deprecate spreading arguments automatically when
passing to external commands.

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

- Users will be able to use `...` to spread arguments to custom/builtin
commands that have rest parameters or allow unknown arguments, or to any
external command
- If a custom command doesn't have a rest parameter and it doesn't allow
unknown arguments either, the spread operator will not be allowed
- Passing lists to external commands without `...` will work for now but
will cause a deprecation warning saying that it'll stop working in 0.91
(is 2 versions enough time?)

Here's a function to help with demonstrating some behavior:
```nushell
> def foo [ a, b, c?, d?, ...rest ] { [$a $b $c $d $rest] | to nuon }
```

You can pass a list of arguments to fill in the `rest` parameter using
`...`:
```nushell
> foo 1 2 3 4 ...[5 6]
[1, 2, 3, 4, [5, 6]]
```

If you don't use `...`, the list `[5 6]` will be treated as a single
argument:

```nushell
> foo 1 2 3 4 [5 6] # Note the double [[]]
[1, 2, 3, 4, [[5, 6]]]
```

You can omit optional parameters before the spread arguments:
```nushell
> foo 1 2 3 ...[4 5] # d is omitted here
[1, 2, 3, null, [4, 5]]
```

If you have multiple lists, you can spread them all:
```nushell
> foo 1 2 3 ...[4 5] 6 7 ...[8] ...[]
[1, 2, 3, null, [4, 5, 6, 7, 8]]
```

Here's the kind of error you get when you try to spread arguments to a
command with no rest parameter:

![image](https://github.com/nushell/nushell/assets/45539777/93faceae-00eb-4e59-ac3f-17f98436e6e4)

And this is the warning you get when you pass a list to an external now
(without `...`):


![image](https://github.com/nushell/nushell/assets/45539777/d368f590-201e-49fb-8b20-68476ced415e)


# 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 std testing; testing run-tests --path
crates/nu-std"` 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
> ```
-->

Added tests to cover the following cases:
- Spreading arguments to a command that doesn't have a rest parameter
(unexpected spread argument error)
- Spreading arguments to a command that doesn't have a rest parameter
*but* there's also a missing positional argument (missing positional
error)
- Spreading arguments to a command that doesn't have a rest parameter
but does allow unknown arguments, such as `exec` (allowed)
- Spreading a list literal containing arguments of the wrong type (parse
error)
- Spreading a non-list value, both to internal and external commands
- Having named arguments in the middle of rest arguments
- `explain`ing a command call that spreads its arguments

# After Submitting
<!-- If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
-->

# Examples

Suppose you have multiple tables:
```nushell
let people = [[id name age]; [0 alice 100] [1 bob 200] [2 eve 300]]
let evil_twins = [[id name age]; [0 ecila 100] [-1 bob 200] [-2 eve 300]]
```

Maybe you often find yourself needing to merge multiple tables and want
a utility to do that. You could write a function like this:
```nushell
def merge_all [ ...tables ] { $tables | reduce { |it, acc| $acc | merge $it } }
```

Then you can use it like this:
```nushell
> merge_all ...([$people $evil_twins] | each { |$it| $it | select name age })
╭───┬───────┬─────╮
│ # │ name  │ age │
├───┼───────┼─────┤
│ 0 │ ecila │ 100 │
│ 1 │ bob   │ 200 │
│ 2 │ eve   │ 300 │
╰───┴───────┴─────╯
```

Except they had duplicate columns, so now you first want to suffix every
column with a number to tell you which table the column came from. You
can make a command for that:
```nushell
def select_and_merge [ --cols: list<string>, ...tables ] {
  let renamed_tables = $tables
    | enumerate
    | each { |it|
      $it.item | select $cols | rename ...($cols | each { |col| $col + ($it.index | into string) })
    };
  merge_all ...$renamed_tables
}
```
And call it like this:
```nushell
> select_and_merge --cols [name age] $people $evil_twins
╭───┬───────┬──────┬───────┬──────╮
│ # │ name0 │ age0 │ name1 │ age1 │
├───┼───────┼──────┼───────┼──────┤
│ 0 │ alice │  100 │ ecila │  100 │
│ 1 │ bob   │  200 │ bob   │  200 │
│ 2 │ eve   │  300 │ eve   │  300 │
╰───┴───────┴──────┴───────┴──────╯
```

---

Suppose someone's made a command to search for APT packages:

```nushell
# The main command
def search-pkgs [
    --install                   # Whether to install any packages it finds
    log_level: int              # Pretend it's a good idea to make this a required positional parameter
    exclude?: list<string>      # Packages to exclude
    repositories?: list<string> # Which repositories to look in (searches in all if not given)
    ...pkgs                     # Package names to search for
] {
  { install: $install, log_level: $log_level, exclude: ($exclude | to nuon), repositories: ($repositories | to nuon), pkgs: ($pkgs | to nuon) }
}
```

It has a lot of parameters to configure it, so you might make your own
helper commands to wrap around it for specific cases. Here's one
example:
```nushell
# Only look for packages locally
def search-pkgs-local [
    --install              # Whether to install any packages it finds
    log_level: int
    exclude?: list<string> # Packages to exclude
    ...pkgs                # Package names to search for
] {
  # All required and optional positional parameters are given
  search-pkgs --install=$install $log_level [] ["<local URI or something>"] ...$pkgs
}
```
And you can run it like this:
```nushell
> search-pkgs-local --install=false 5 ...["python2.7" "vim"]
╭──────────────┬──────────────────────────────╮
│ install      │ false                        │
│ log_level    │ 5                            │
│ exclude      │ []                           │
│ repositories │ ["<local URI or something>"] │
│ pkgs         │ ["python2.7", vim]           │
╰──────────────┴──────────────────────────────╯
```

One thing I realized when writing this was that if we decide to not
allow passing optional arguments using the spread operator, then you can
(mis?)use the spread operator to skip optional parameters. Here, I
didn't want to give `exclude` explicitly, so I used a spread operator to
pass the packages to install. Without it, I would've needed to do
`search-pkgs-local --install=false 5 [] "python2.7" "vim"` (explicitly
pass `[]` (or `null`, in the general case) to `exclude`). There are
probably more idiomatic ways to do this, but I just thought it was
something interesting.

If you're a virologist of the [xkcd](https://xkcd.com/350/) kind,
another helper command you might make is this:
```nushell
# Install any packages it finds
def live-dangerously [ ...pkgs ] {
  # One optional argument was given (exclude), while another was not (repositories)
  search-pkgs 0 [] ...$pkgs --install # Flags can go after spread arguments
}
```

Running it:
```nushell
> live-dangerously "git" "*vi*" # *vi* because I don't feel like typing out vim and neovim
╭──────────────┬─────────────╮
│ install      │ true        │
│ log_level    │ 0           │
│ exclude      │ []          │
│ repositories │ null        │
│ pkgs         │ [git, *vi*] │
╰──────────────┴─────────────╯
```

Here's an example that uses the spread operator more than once within
the same command call:
```nushell
let extras = [ chrome firefox python java git ]

def search-pkgs-curated [ ...pkgs ] {
  (search-pkgs
      1
      [emacs]
      ["example.com", "foo.com"]
      vim # A must for everyone!
      ...($pkgs | filter { |p| not ($p | str contains "*") }) # Remove packages with globs
      python # Good tool to have
      ...$extras
      --install=false
      python3) # I forget, did I already put Python in extras?
}
```

Running it:
```nushell
> search-pkgs-curated "git" "*vi*"
╭──────────────┬───────────────────────────────────────────────────────────────────╮
│ install      │ false                                                             │
│ log_level    │ 1                                                                 │
│ exclude      │ [emacs]                                                           │
│ repositories │ [example.com, foo.com]                                            │
│ pkgs         │ [vim, git, python, chrome, firefox, python, java, git, "python3"] │
╰──────────────┴───────────────────────────────────────────────────────────────────╯
```
2023-12-28 15:43:20 +08:00
Antoine Stevan
c6043eb500
improve completions of use and overlay use (#11330)
# Description
this PR is two-fold
- make `use` and `overlay use` use the same completion algorithm in
48f29b633
- list directory modules in completions of both with 402acde5c

# User-Facing Changes
i currently have the following in my `NU_LIB_DIRS`
<details>
<summary>click to see the script</summary>

```nushell
for dir in $env.NU_LIB_DIRS {
    print $dir
    print (ls $dir --short-names | select name type)
}
```
</details>

```
/home/amtoine/.local/share/nupm/modules
#┬────────name────────┬type
0│nu-git-manager      │dir
1│nu-git-manager-sugar│dir
2│nu-hooks            │dir
3│nu-scripts          │dir
4│nu-themes           │dir
5│nupm                │dir
─┴────────────────────┴────

/home/amtoine/.config/nushell/overlays
#┬──name──┬type
0│ocaml.nu│file
─┴────────┴────
```

> **Note**
> all the samples below are run from the Nushell repo, i.e. a directory
with a `toolkit.nu` module

## before the changes
- `use` would give me `["ocaml.nu", "toolkit.nu"]` 
- `overlay use` would give me `[]` 

## after the changes
both commands give me
```nushell
[
    "nupm/",
    "ocaml.nu",
    "toolkit.nu",
    "nu-scripts/",
    "nu-git-manager/",
    "nu-git-manager-sugar/",
]
```

# Tests + Formatting
- adds a new `directory_completion/mod.nu` to the completion fixtures
- make sure `source-env`, `use` and `overlay-use` are all tested in the
_dotnu_ test
- fix all the other tests that use completions in the fixtures directory
for completions

# After Submitting
2023-12-19 17:14:34 +08:00
Antoine Stevan
156232fe08
disable directory submodule auto export (#11157)
should
- close https://github.com/nushell/nushell/issues/11133

# Description
to allow more freedom when writing complex modules, we are disabling the
auto-export of director modules.

the change was as simple as removing the crawling of files and modules
next to any `mod.nu` and update the standard library.

# User-Facing Changes
users will have to explicitely use `export module <mod>` to define
submodules and `export use <mod> <cmd>` to re-export definitions, e.g.
```nushell
# my-module/mod.nu
export module foo.nu     # export a submodule
export use bar.nu bar-1  # re-export an internal command

export def top [] {
    print "`top` from `mod.nu`"
}
```
```nushell
# my-module/foo.nu
export def "foo-1" [] {
    print "`foo-1` from `lib/foo.nu`"
}

export def "foo-2" [] {
    print "`foo-2` from `lib/foo.nu`"
}
```
```nushell
# my-module/bar.nu
export def "bar-1" [] {
    print "`bar-1` from `lib/bar.nu`"
}
```

# Tests + Formatting
i had to add `export module` calls in the `tests/modules/samples/spam`
directory module and allow the `not_allowed` module to not give an
error, it is just empty, which is fine.

# After Submitting
- mention in the release note
- update the following repos
```
#┬─────name─────┬version┬─type─┬─────────repo─────────
0│nu-git-manager│0.4.0  │module│amtoine/nu-git-manager
1│nu-scripts    │0.1.0  │module│amtoine/scripts       
2│nu-zellij     │0.1.0  │module│amtoine/zellij-layouts
3│nu-scripts    │0.1.0  │module│nushell/nu_scripts    
4│nupm          │0.1.0  │module│nushell/nupm          
─┴──────────────┴───────┴──────┴──────────────────────
```
2023-12-15 12:37:55 +01:00
nibon7
d1390ac95b
Fix overlay_use_main_not_exported hanging when an external spam command exists (#11261)
# Description
The `spam` command is provided by
[opensp](https://openjade.sourceforge.net/) which causes
`overlay_use_main_not_exported` to hang. `opensp` is pulled by
`gnome-control-center` on my system.

[opensp package
list](https://archlinux.org/packages/extra/x86_64/opensp/files/)

```
opensp 1.5.2-10 File List

Package has 224 files and 14 directories.

[Back to Package](https://archlinux.org/packages/extra/x86_64/opensp/)

    usr/
    usr/bin/
    usr/bin/nsgmls
    usr/bin/onsgmls
    usr/bin/osgmlnorm
    usr/bin/ospam
    usr/bin/ospcat
    usr/bin/ospent
    usr/bin/osx
    usr/bin/sgml2xml
    usr/bin/sgmlnorm
    usr/bin/spam
    ...snip...
```

`cargo test` output
```
...snip...
test shell::pipeline::commands::internal::unlet_variable_in_parent_scope ... ok
test shell::pipeline::commands::internal::unlet_env_variable ... ok
test shell::pipeline::doesnt_break_on_utf8 ... ok
test shell::run_export_extern ... ok
test shell::run_script_that_looks_like_module ... ok
test shell::pipeline::commands::internal::can_process_one_row_from_internal_and_pipes_it_to_stdin_of_external ... ok
test shell::pipeline::commands::internal::variable_scoping::access_variables_in_scopes ... ok
test shell::run_in_login_mode ... ok
test shell::run_in_interactive_mode ... ok
test shell::run_in_noninteractive_mode ... ok
test shell::run_in_not_login_mode ... ok
test shell::pipeline::commands::internal::subexpression_properly_redirects ... ok
test shell::pipeline::commands::internal::subexpression_handles_dot ... ok
test shell::pipeline::commands::internal::takes_rows_of_nu_value_strings_and_pipes_it_to_stdin_of_external ... ok
test overlays::overlay_use_main_not_exported has been running for over 60 seconds
```
# User-Facing Changes
N/A

# Tests + Formatting
Make sure you've run and fixed any issues with these commands:

- [x] `cargo fmt --all -- --check` to check standard code formatting
(`cargo fmt --all` applies these changes)
- [x] `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used`
to check that you're using the standard code style
- [x] `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))
- [x] `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library



# After Submitting
N/A
2023-12-08 06:08:38 -06:00
Renan Ribeiro
54d73748e4
Remove file I/O from tests that don't need it (#11182)
# Description

This PR implements modifications to command tests that write unnecessary
json and csv to disk then load it with open, by using nuon literals
instead.

- Fixes #7189



# User-Facing Changes
None

# Tests + Formatting
This only affects existing tests, which still pass.
2023-11-29 23:21:34 +01:00
Andrej Kolchin
0e1322e6d6
Forbid reserved variable names for function arguments (#11169)
Works for all arguments and flags. Because the signature parsing doesn't
give the spans, it is flags the entire signature.

Also added a constant with reserved variable names.

Fix #11158.
2023-11-29 18:29:07 +01:00
Marc Schreiber
c110ddff66
Implement LSP Text Document Synchronization (#10941) 2023-11-15 17:35:48 -06:00
Eric Hodel
81d00f71a9
Show plugin extra usage and search terms (#10952)
# Description

The `PluginSignature` type supports extra usage but this was not
available in `plugin_name --help`. It also supports search terms but
these did not appear in `help commands`

New behavior show below is the "Extra usage for nu-example-1" line and
the "Search terms:" line

```
❯ nu-example-1 --help
PluginSignature test 1 for plugin. Returns Value::Nothing

Extra usage for nu-example-1

Search terms: example

Usage:
  > nu-example-1 {flags} <a> <b> (opt) ...(rest)

Flags:
  -h, --help - Display the help message for this command
  -f, --flag - a flag for the signature
  -n, --named <String> - named string

Parameters:
  a <int>: required integer value
  b <string>: required string value
  opt <int>: Optional number (optional)
  ...rest <string>: rest value string

Examples:
  running example with an int value and string value
  > nu-example-1 3 bb
```

Search terms are also available in `help commands`:

```
❯ help commands | where name == "nu-example-1" | select name search_terms
╭──────────────┬──────────────╮
│     name     │ search_terms │
├──────────────┼──────────────┤
│ nu-example-1 │ example      │
╰──────────────┴──────────────╯
```

# User-Facing Changes

Users can now see plugin extra usage and search terms 

# Tests + Formatting

- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting

N/A
2023-11-04 15:12:58 -05:00
Marc Schreiber
0ca8fcf58c
Integrated Language Server (#10723)
# Description

This commit integrates a language server into nushell so that IDEs don't
have to convert CLI option back and forth.

- fixes https://github.com/nushell/vscode-nushell-lang/issues/117
- fixes https://github.com/jokeyrhyme/nuls/issues/8

Tracking tasks


- [x]
[textDocument/hover](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_hover)
-> `nu --ide-hover`
- [x]
[textDocument/completion](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_completion)
-> `nu --ide-complete`
- [x]
[textDocument/definition](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_definition)
-> `nu --ide-goto-def`
- ~~[ ]
[textDocument/didChange](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_didChange),
[textDocument/didClose](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_didClose),
and
[textDocument/didOpen](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_didOpen)~~
(will be done in a follow-up PR)
- ~~[ ]
[textDocument/inlayHint](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_inlayHint)
-> `nu --ide-check`~~ (will be done in a follow-up PR)
- ~~[ ]
[textDocument/publishDiagnostics](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_publishDiagnostics)
-> `nu --ide-check`~~ (will be done in a follow-up PR)
- ~~[ ]
[workspace/configuration](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#workspace_configuration)~~
(will be done in a follow-up PR)
- ~~[ ]
[workspace/didChangeConfiguration](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#workspace_didChangeConfiguration)~~
(will be done in a follow-up PR)


# User-Facing Changes

The command line options `--lsp` will start a LSP server.

# 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 std testing; testing run-tests --path
crates/nu-std"` 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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2023-11-02 10:18:57 -05:00
Stefan Holderbach
0569a9c92e
Disallow duplicated columns in table literals (#10875)
# Description
Pretty much all operations/commands in Nushell assume that the column
names/keys in a record and thus also in a table (which consists of a
list of records) are unique.
Access through a string-like cell path should refer to a single column
or key/value pair and our output through `table` will only show the last
mention of a repeated column name.

```nu
[[a a]; [1 2]]
╭─#─┬─a─╮
│ 0 │ 2 │
╰───┴───╯
```

While the record parsing already either errors with the
`ShellError::ColumnDefinedTwice` or silently overwrites the first
occurence with the second occurence, the table literal syntax `[[header
columns]; [val1 val2]]` currently still allowed the creation of tables
(and internally records with more than one entry with the same name.

This is not only confusing, but also breaks some assumptions around how
we can efficiently perform operations or in the past lead to outright
bugs (e.g. #8431 fixed by #8446).

This PR proposes to make this an error.
After this change another hole which allowed the construction of records
with non-unique column names will be plugged.

## Parts
- Fix `SE::ColumnDefinedTwice` error code
- Remove previous tests permitting duplicate columns
- Deny duplicate column in table literal eval
- Deny duplicate column in const eval
- Deny duplicate column in `from nuon`

# User-Facing Changes
`[[a a]; [1 2]]` will now return an error:

```
Error: nu:🐚:column_defined_twice

  × Record field or table column used twice
   ╭─[entry #2:1:1]
 1 │ [[a a]; [1 2]]
   ·   ┬ ┬
   ·   │ ╰── field redefined here
   ·   ╰── field first defined here
   ╰────
```

this may under rare circumstances block code from evaluating.

Furthermore this makes some NUON files invalid if they previously
contained tables with repeated column names.

# Tests + Formatting
Added tests for each of the different evaluation paths that materialize
tables.
2023-11-01 21:25:35 +01:00
Himadri Bhattacharjee
7162d4d9aa
Escape path that could be a flag (#10721)
# Description
Files that begin with dashes can be ambiguous when passed to commands
like `ls`. For example if there exists a file `--help`, it might be
considered a flag if not properly escaped. This PR escapes any file that
begins with a dash.

# User-Facing Changes

Files beginning with dashes will be escaped.

# Tests + Formatting

Tests are added.
2023-10-18 23:02:11 +02:00
Darren Schroeder
814a5caf9a
change canonicalize test use a more deeply rooted folder (#10685)
# Description

This PR changes the `canonicalize_ndots` tests (renames to
canonicalize_ndots2) so that when it's checking for
`canonicalize_with("...", cwd)` it guarantees it begins in a more deeply
nested folder. I was having problems because my new DevDrive is on
D:\nushell and it can't do `cd ...` from that folder.

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

# Tests + Formatting
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Make sure you've run and fixed any issues with these commands:

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2023-10-11 11:27:25 -05:00
Hofer-Julian
8a77d1ed92
Let run_in_login_mode succeed even with broken local config (#10622)
I wondered why this test failed for me.
Turns out my config file is not compatible with current main, but the
error message was useless. I've added `--no-config-file`
2023-10-10 14:12:19 +02:00
Jakub Žádník
4efccb2b1c
Fix parsing of signature inp/out types in predecls (#10642)
# Description
Fixes https://github.com/nushell/nushell/issues/10605 (again).

The loop looking for `[` to determine signature position didn't stop
early enough, so it thought the second `[` denoting the inp/out types
marks the beginning of the signature.

# User-Facing Changes

# Tests + Formatting
adds a new `predecl_signature_multiple_inp_out_types` test

# After Submitting
2023-10-08 12:58:26 +02:00
Jakub Žádník
67b5e1bde9
Fix wrong parsing of signatures in predecl scan (#10637) 2023-10-07 16:42:09 +03:00
Himadri Bhattacharjee
d064d187ab
fix: complete paths surrounded by quotes or backticks (#10600)
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Fixes #10586

# Description
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Any partial path that begins with or is surrounded by a quote or
backtick will be tab completed. The completed result would be surrounded
by backticks unconditionally.


![output](https://github.com/nushell/nushell/assets/107522312/13e01104-18a1-4483-b010-79985294748b)

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
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See above.

# Tests + Formatting
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Formatted and added test cases.

# After Submitting
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2023-10-07 05:45:30 +13:00
joergsch
e8da57b05e
Correct line folding in from ics/from vcf (#10577)
# Description
Potential fix for #10398

datatracker.ietf.org/doc/html/rfc5545#section-3.1
datatracker.ietf.org/doc/html/rfc6350#section-3.2

---------

Co-authored-by: Joerg <joerg@schuetter.org>
2023-10-03 19:11:16 +02:00
Jakub Žádník
eb6870cab5
Add --env and --wrapped flags to def (#10566) 2023-10-02 21:13:31 +03:00
Himadri Bhattacharjee
5c15a4dd6e
Fish-like completions for nested directories (#10543)
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# Description
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This PR allows tab completion for nested directories while only
specifying a part of the directory names. To illustrate this, if I type
`tar/de/inc` and hit tab, it autocompletes to
`./target/debug/incremental`.



# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
Nested paths can be tab completed by typing lesser characters.

# Tests + Formatting
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Tests cases are added.

# After Submitting
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2023-10-03 06:44:51 +13:00
WindSoilder
9c52b93975
allow early return outside of main (#10514)
# Description
Fixes: #9792

When evaluating file, we need to allow early return if we evaluate
script file first.
2023-09-28 18:49:42 +02:00
Antoine Stevan
6c026242d4
remove the $nothing variable (#10478)
related to 
- https://github.com/nushell/nushell/pull/9973
- https://github.com/nushell/nushell/pull/9918

thanks to @jntrnr and their super useful tips on this PR, i learned
about the parser + evaluation, so 🙏

# Description
because we already have `null` as the value of the type `nothing` and as
a followup to the two other attempts of mine, i propose to remove the
redundant `$nothing` built-in variable 😋

this PR is the first step, deprecating `$nothing`.
a followup PR will remove it altogether and wait for 0.87 👍 

⚙️ **details**: a new `NOTHING_VARIABLE_ID = 3` has been added,
parsing `$nothing` will create it, finally a `Value::Nothing` will be
produced and a warning will be reported.

this PR already fixes the `toolkit.nu` module so that it does not throw
a bunch of warnings each time 👌

# User-Facing Changes
`$nothing` is now deprecated and will be removed in 0.87
```nushell
> $nothing
Error:   × Deprecated variable
   ╭─[entry #1:1:1]
 1 │ $nothing
   · ────┬───
   ·     ╰── `$nothing` is deprecated and will be removed in 0.87.
   ╰────
  help: Use `null` instead
```

# Tests + Formatting
tests have been updated, especially
- `nothing_fails_string`
- `nothing_fails_int`
which use a variable called `nil` now to make sure `nothing` does not
support cell paths 👍

# After Submitting
classic deprecation mention 👍
2023-09-26 18:49:28 +02:00
Artemiy
e96039fb1b
Fix default argument value type checking (#10460)
# Description
Fix type checking in arguments default values not adhering to subtyping
rules
Currently following examples produce a parse error:
```nu
def test [ --qwe: record<a: int> = {a: 1 b: 1} ] { }
def test [ --qwe: list<any> = [ 1 2 3 ] ] { }
```
despite types matching. Type equality check is replaced with subtyping
check and everything parses fine:
# User-Facing Changes
Default values of flag arguments type checking behavior is in line with
`let` statements
2023-09-24 11:30:58 +02:00
Artemiy
65e2733571
Allow complex types in input/output and let (#10405)
# Description
This PR fixes #9702 on the side of parse. I.e. input/output types in
signature and type annotations in `let` now should correctly parse with
type annotations that contain commas and spaces:

![image](https://github.com/nushell/nushell/assets/17511668/babc0a69-5cb3-46c2-98ef-6da69ee3d3be)

# User-Facing Changes
Return values and let type annotations now can contain stuff like
`table<a: int b: record<c: string d: datetime>>` e.t.c
2023-09-24 11:01:21 +02:00
Stefan Holderbach
0c7a8e3634
Remove dead BSON related tests (#10458)
Those tests where behind a feature flag `bson` that is never defined in
`Cargo.toml`

Remove them.
2023-09-21 20:01:49 +02:00
Stefan Holderbach
bbf0b45c59
Update internal use of decimal to float (#10333)
# Description
We made the decision that our floating point type should be referred to
as `float` over `decimal`.
Commands were updated by #9979 and #10320

Now make the internal codebase consistent in referring to this data type
as `float`.

Work for #10332

# User-Facing Changes

`decimal` has been removed as a type name/symbol. 

Instead of 
```nushell
def foo [bar: decimal] decimal -> decimal {}
```
use 
```nushell
def foo [bar: float] float -> float {}
```

Potential effect of `SyntaxShape`'s `Display` implementation now also
referring to `float` instead of `decimal`

# Details
- Rename `SyntaxShape::Decimal` to `Float`
- Update `Display for SyntaxShape` to `float`
- Update error message + fn name in dataframe code
- Fix docs in command examples
- Rename tests that are float specific
- Update doccomment on `SyntaxShape`
- Update comment in script

# Tests + Formatting
Updates the names of some tests
2023-09-13 23:53:55 +02:00
Stefan Holderbach
7f39609d9a
Remove python-like string multiplication (#10293)
# Description
Currently we support "multiplication" of strings, resulting in a terse
way to repeat a particular string.
This can have unintended side effects when dealing with mixed data (e.g.
after parsing data that is not all numbers).
Furthermore as we frequently fall-back to strings while parsing source
code, this introduced a runaway edge case in const evaluation (#10212)

Work for #10233

## Details
- Remove python-like string multiplication.
- Workaround for indentation
  - This should probably be addressed with a purpose built command
- Remove special const-eval error test

# User-Facing Changes
**Major breaking change!**
`"string" * 42` will stop working. (This was used for example in the
stdlib)

We should bless a good alternative before landing this

---------

Co-authored-by: JT <547158+jntrnr@users.noreply.github.com>
2023-09-13 19:52:04 +12:00
Jakub Žádník
0a3bfe7f73
Allow parse-time evaluation of if (#10326) 2023-09-12 21:35:47 +03:00
JT
451a9c64d3
Change echo to print when not redirected (#10338)
# Description

This changes `echo` to work more closely to what users of other shells
would expect:

* when redirected, `echo` works as before and sends values through the
pipeline
* when not redirected, `echo` will print values to the screen/terminal

# User-Facing Changes

A standalone `echo` now will print to the terminal, if not redirected.

The `echo` command is no longer const eval-able, as it will now print to
the terminal in some cases.

# Tests + Formatting
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2023-09-13 06:35:01 +12:00
Stefan Holderbach
6e9b6f22c9
Deref &String arguments to &str where appropriate (#10321)
# Description
This generally makes for nicer APIs, as you are not forced to use an
existing allocation covering the full `String`.

Some exceptions remain where the underlying type requirements favor it.

# User-Facing Changes
None
2023-09-12 14:06:56 +08:00
David Matos
fed4233db4
use uutils/coreutils cp command in place of nushell's cp command (#10097)
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# Description
Hi. Basically, this is a continuation of the work that @fdncred started.
Given some nice discussions on #9463 , and [merged uutils
PR](https://github.com/uutils/coreutils/pull/5152) from @tertsdiepraam
we have decided to give the `cp` command the `crawl` stage as it was
named.

> [!NOTE] 
Given that the `uutils` crate has not made the release for the merged
PR, just make sure you checkout latest and put it in the required place
to make this PR work.

The aim of this PR is for is to see how to move forward using `uutils`
crate. In order to getting this started, I have made the current
`nushell cp tests` pass along with some extra ones I copied over from
the `uutils` repo.

With all of that being said, things that would be nice to decide, and
keep working on:

Crawl:
- Handling of certain `named` flags, with their long and short
forms(e.g. --update, --reflink, --preserve, etc), and using default
values. Maybe `-u` can already have a `default_missing_value`.
- Should we maybe just support one single option `switch` flags (see
`--backup` in code) as a contrast to the other named args.
- Complete test coverage from `uutils`. They had > 100 tests, and I
could only port like 12 as they are a bit time consuming given they
cannot be straight up copy pasted. Maybe we do not need all >100, but
maybe the more relevant to what we want.
- Refactor this code

Walk:
- Non fatal errors on `copy` from `utils`. Currently it just sends it to
stdout but errors have no span
- Better integration 

An added possibility is the addition of `SyntaxShape::OneOf()` for
`Named` arguments which was briefly mentioned in the discord server, but
that is still to be decided. This could greatly improve some of the
integration. This would enable something like `cp --preserve [all
timestamp]` or `cp --preserve all` to both work.

I did not want to keep holding on this, and wait till I was happy with
the code because I think its nice if everyone can start up and suggest
refactors, but the main important part now was getting it out the door,
as if I take my sweet time this will take way longer 😛

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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

Make sure you've run and fixed any issues with these commands:

- [X] cargo fmt --all -- --check` to check standard code formatting
(`cargo fmt --all` applies these changes)
- [X] cargo clippy --workspace -- -D warnings -D clippy::unwrap_used` to
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- [X] cargo test --workspace` to check that all tests pass
- [X] cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library

> **Note**
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> ```
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# After Submitting
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---------

Co-authored-by: Darren Schroeder <343840+fdncred@users.noreply.github.com>
2023-09-08 13:57:38 -05:00
Horasal
54394fe9af
Allow operator in constants (#10212)
This pr fixes https://github.com/nushell/nushell/issues/10200

# Description

Allow unary and binary operators in constants, e.g.

```bash
const a = 1 + 2
const b = [0, 1, 2, 3] ++ [4]
```

# User-Facing Changes

Now constants can contain operators.

# Tests + Formatting

- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`

# After Submitting

None

---------

Co-authored-by: Horasal <horsal@horsal.dev>
2023-09-05 16:35:58 +02:00
nibon7
e566a073dc
Exit early when encountering parsing errors (#10213)
# Description
This PR tries to fix #10184 and #10182.
2023-09-05 14:36:37 +02:00
Jakub Žádník
5ac5b90aed
Allow parse-time evaluation of calls, pipelines and subexpressions (#9499)
Co-authored-by: Antoine Stevan <44101798+amtoine@users.noreply.github.com>
2023-08-26 16:41:29 +03:00
JT
5378727049
Revert "pin serde to avoid https://github.com/serde-rs/serde/issues/2538" (#10078)
Reverts nushell/nushell#10061

The latest serde (1.0.184) reverts the binary requirement.
2023-08-22 05:04:34 +12:00
Jakub Žádník
3148acd3a4
Recursively export constants from modules (#10049)
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# Description
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https://github.com/nushell/nushell/pull/9773 introduced constants to
modules and allowed to export them, but only within one level. This PR:
* allows recursive exporting of constants from all submodules
* fixes submodule imports in a list import pattern
* makes sure exported constants are actual constants

Should unblock https://github.com/nushell/nushell/pull/9678

### Example:
```nushell
module spam {
    export module eggs {
        export module bacon {
            export const viking = 'eats'
        }
    }
}

use spam 
print $spam.eggs.bacon.viking  # prints 'eats'

use spam [eggs]
print $eggs.bacon.viking  # prints 'eats'

use spam eggs bacon viking
print $viking  # prints 'eats'
```

### Limitation 1:

Considering the above `spam` module, attempting to get `eggs bacon` from
`spam` module doesn't work directly:
```nushell
use spam [ eggs bacon ]  # attempts to load `eggs`, then `bacon`
use spam [ "eggs bacon" ]  # obviously wrong name for a constant, but doesn't work also for commands
```

Workaround (for example):
```nushell
use spam eggs
use eggs [ bacon ]

print $bacon.viking  # prints 'eats'
```

I'm thinking I'll just leave it in, as you can easily work around this.
It is also a limitation of the import pattern in general, not just
constants.

### Limitation 2:

`overlay use` successfully imports the constants, but `overlay hide`
does not hide them, even though it seems to hide normal variables
successfully. This needs more investigation.

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

Allows recursive constant exports from submodules.

# Tests + Formatting
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fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect -A clippy::result_large_err` to check that
you're using the standard code style
- `cargo test --workspace` to check that all tests pass
- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` 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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2023-08-20 14:51:35 +02:00
JT
318862aad6
pin serde to avoid https://github.com/serde-rs/serde/issues/2538 (#10061)
Context: https://github.com/serde-rs/serde/issues/2538

As other projects are investigating, this should pin serde to the last
stable release before binary requirements were introduced.

# Description
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# User-Facing Changes
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# Tests + Formatting
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Make sure you've run and fixed any issues with these commands:

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you're using the standard code style
- `cargo test --workspace` to check that all tests pass
- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library

> **Note**
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> ```
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# After Submitting
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2023-08-20 05:50:26 +12:00
Jakub Žádník
2aa4cd5cc5
Add a few more fields to scope commands (#10045) 2023-08-18 20:47:38 +03:00
Jakub Žádník
cdf09abcc0
Allow exporting extern-wrapped (#10025) 2023-08-18 20:45:33 +03:00
Jakub Žádník
7e48607820
Remove dead code from tests (#10040)
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# Description
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Removes some dead code that was left over

# User-Facing Changes
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helps us keep track of breaking changes. -->

# Tests + Formatting
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you're using the standard code style
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crates/nu-std"` to run the tests for the standard library

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2023-08-17 15:08:35 -05:00
Jakub Žádník
c5e59efa4d
Sort entries in scope commands; Fix usage of externs (#10039)
# Description

* All output of `scope` commands is sorted by the "name" column. (`scope
externs` and some other commands had entries in a weird/random order)
* The output of `scope externs` does not have extra newlines (that was
due to wrong usage creation of known externals)
2023-08-17 16:37:01 +02:00
Jakub Žádník
e88a51e930
Refactor scope commands (#10023) 2023-08-17 11:58:38 +03:00
Kiryl Mialeshka
6eac9bfd0f
test: clear parent envs to prevent leakage to tests (#9976)
Running tests locally from nushell with customizations (i.e.
$env.PROMPT_COMMAND etc) may lead to failing tests as that customization
leaks to the sandboxed nu itself.

Remove `FILE_PWD` from env

# Tests + Formatting

Tests are now passing locally without issue in my case
2023-08-14 12:49:55 +02:00
JT
839010b89d
Auto-expand table based on terminal width (#9934)
# Description

This PR adds back the functionality to auto-expand tables based on the
terminal width, using the logic that if the terminal is over 100 columns
to expand.

This sets the default config value in both the Rust and the default
nushell config.

To do so, it also adds back the ability for hooks to be strings of code
and not just code blocks.

Fixed a couple tests: two which assumed that the builtin display hook
didn't use a table -e, and one that assumed a hook couldn't be a string.

# User-Facing Changes
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helps us keep track of breaking changes. -->

# Tests + Formatting
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you're using the standard code style
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- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library

> **Note**
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2023-08-08 05:47:23 -05:00
JT
077643cadf
Add tests for script subcommands (#9933)
# Description

Add a few tests to ensure that you can add subcommands to scripts. We've
supported this for a long time, though I'm not sure if anyone has
actually tried it. As we weren't testing the support, this PR adds a few
tests to ensure it stays working.

Example script subcommand:

```
def "main addten" [x: int] {
  print ($x + 10)
}
```

then call it with:

```
> nu ./script.nu addten 5
```

# User-Facing Changes
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helps us keep track of breaking changes. -->

# Tests + Formatting
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crates/nu-std"` to run the tests for the standard library

> **Note**
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# After Submitting
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2023-08-07 05:09:20 +12:00
Antoine Stevan
8403fff345
allow print to take data as input again (#9823)
related to
https://discord.com/channels/601130461678272522/601130461678272524/1134079115134251129

# Description
before 0.83.0, `print` used to allow piping data into it, e.g.
```nushell
"foo" | print
```
instead of 
```nushell
print "foo"
```

this PR enables the `any -> nothing` input / output type to allow this
again.

i've double checked and `print` is essentially the following snippet
```rust
        if !args.is_empty() {
            for arg in args {
                arg.into_pipeline_data()
                    .print(engine_state, stack, no_newline, to_stderr)?;
            }
        } else if !input.is_nothing() {
            input.print(engine_state, stack, no_newline, to_stderr)?;
        }
```
1. the first part is for `print a b c`
2. the second part is for `"foo" | print`

# User-Facing Changes
```nushell
"foo" | print
```
works again

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
-  `toolkit test`
-  `toolkit test stdlib`

# After Submitting

---------

Co-authored-by: sholderbach <sholderbach@users.noreply.github.com>
2023-07-27 21:40:25 +02:00
David Matos
1ba2269aa9
Disallow empty record with empty key,value pairs on ini format (#9722)
# Description
This PR fixes #9556. Now, only a section will be added if it contains a
key, value pair. With this change, `{record with 0 fields}`, should not
appear anymore.

For more context on empty sections, see issue on the
[crate](https://github.com/zonyitoo/rust-ini/issues/109)

```
open -r whatever | from ini
╭─────────────┬──────────────────────────────────────────────────────────────╮
│             │ ╭───────────────────────┬──────────────────────────────────╮ │
│ placeholder │ │ aws_access_key_id     │ AAAAAAAAAAAAAAAAAAAAA            │ │
│             │ │ aws_secret_access_key │ BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB │ │
│             │ ╰───────────────────────┴──────────────────────────────────╯ │
│             │ ╭───────────────────────┬──────────────────────────╮         │
│ default     │ │ aws_access_key_id     │ AAAAAAAAAAAAAAAAAA       │         │
│             │ │ aws_secret_access_key │ AAAAAAAAAAAAAAAAAAAAAAA  │         │
│             │ │ aws_session_token     │ BBBBBBBBBBBBBBBBBBBBBBBB │         │
│             │ │ region                │ us-east-1                │         │
│             │ │ output                │ json                     │         │
│             │ ╰───────────────────────┴──────────────────────────╯         │
╰─────────────┴──────────────────────────────────────────────────────────────╯
```
# Tests + Formatting
Now test for exact `from ini` output

---------

Co-authored-by: sholderbach <sholderbach@users.noreply.github.com>
2023-07-18 22:14:18 +02:00
Jakub Žádník
e66139e6bb
Fix broken constants in scopes (#9679) 2023-07-14 00:02:05 +03:00
WindSoilder
9a6a3a731e
support env and mut assignment with if block and match guard (#9650)
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Fixes: https://github.com/nushell/nushell/issues/9595

So we can do the following in nushell:
```nushell
mut a = 3
$a = if 4 == 3 { 10 } else {20}
```
or
```nushell
$env.BUILD_EXT = match 3 { 1 => { 'yes!' }, _ => { 'no!' } }
```

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# Tests + Formatting
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standard library

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---------

Co-authored-by: WindSoilder <windsoilder@DESKTOP-R8GRJ1D.localdomain>
2023-07-13 10:55:41 +02:00
Han Junghyuk
556852ded4
Remove unnecessary cwd, pipeline(), r# from various tests (#9645)
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# Description
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This PR cleans up tests in the `tests/` directory by removing
unnecessary code.
Part of #8670.

- [x]  const_/mod.rs
- [x]  eval/mod.rs
- [x]  hooks/mod.rs
- [x]  modules/mod.rs
- [x]  overlays/mod.rs
- [x]  parsing/mod.rs
- [x]  scope/mod.rs
- [x]  shell/environment/env.rs
- [x]  shell/environment/nu_env.rs
- [x]  shell/mod.rs
- [x]  shell/pipeline/commands/external.rs
- [x]  shell/pipeline/commands/internal.rs
- [x]  shell/pipeline/mod.rs

# User-Facing Changes
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helps us keep track of breaking changes. -->

# Tests + Formatting
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clippy::needless_collect -A clippy::result_large_err` to check that
you're using the standard code style
- `cargo test --workspace` to check that all tests pass
- `cargo run -- crates/nu-std/tests/run.nu` to run the tests for the
standard library

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2023-07-12 19:07:20 +02:00
Stefan Holderbach
bd0032898f
Apply nightly clippy lints (#9654)
# Description
- A new one is the removal of unnecessary `#` in raw strings without `"`
inside.
-
https://rust-lang.github.io/rust-clippy/master/index.html#/needless_raw_string_hashes
- The automatically applied removal of `.into_iter()` touched several
places where #9648 will change to the use of the record API. If
necessary I can remove them @IanManske to avoid churn with this PR.
- Manually applied `.try_fold` in two places
- Removed a dead `if`
- Manual: Combat rightward-drift with early return
2023-07-12 00:00:31 +02:00
JT
4af24363c2
remove let-env, focus on mutating $env (#9574)
# Description

For years, Nushell has used `let-env` to set a single environment
variable. As our work on scoping continued, we refined what it meant for
a variable to be in scope using `let` but never updated how `let-env`
would work. Instead, `let-env` confusingly created mutations to the
command's copy of `$env`.

So, to help fix the mental model and point people to the right way of
thinking about what changing the environment means, this PR removes
`let-env` to encourage people to think of it as updating the command's
environment variable via mutation.

Before:

```
let-env FOO = "BAR"
```

Now:

```
$env.FOO = "BAR"
```

It's also a good reminder that the environment owned by the command is
in the `$env` variable rather than global like it is in other shells.

# User-Facing Changes

BREAKING CHANGE BREAKING CHANGE

This completely removes `let-env FOO = "BAR"` so that we can focus on
`$env.FOO = "BAR"`.

# Tests + Formatting
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you're using the standard code style
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- `cargo run -- crates/nu-std/tests/run.nu` to run the tests for the
standard library

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# After / Before Submitting
integration scripts to update:
- ✔️
[starship](https://github.com/starship/starship/blob/master/src/init/starship.nu)
- ✔️
[virtualenv](https://github.com/pypa/virtualenv/blob/main/src/virtualenv/activation/nushell/activate.nu)
- ✔️
[atuin](https://github.com/ellie/atuin/blob/main/atuin/src/shell/atuin.nu)
(PR: https://github.com/ellie/atuin/pull/1080)
- 
[zoxide](https://github.com/ajeetdsouza/zoxide/blob/main/templates/nushell.txt)
(PR: https://github.com/ajeetdsouza/zoxide/pull/587)
- ✔️
[oh-my-posh](https://github.com/JanDeDobbeleer/oh-my-posh/blob/main/src/shell/scripts/omp.nu)
(pr: https://github.com/JanDeDobbeleer/oh-my-posh/pull/4011)
2023-07-01 07:57:51 +12:00
JT
33535c514e
Better error message if env var is used as var (#9522)
# Description

This PR improves the error message if an environment variable (that's
visible before the parser begins) is used in the form of `$PATH` instead
of `$env.PATH`.

Before:

```
Error: nu::parser::variable_not_found

  × Variable not found.
   ╭─[entry #31:1:1]
 1 │ echo $PATH
   ·      ──┬──
   ·        ╰── variable not found.
   ╰────
```

After:

```
Error: nu::parser::env_var_not_var

  × Use $env.PATH instead of $PATH.
   ╭─[entry #1:1:1]
 1 │ echo $PATH
   ·      ──┬──
   ·        ╰── use $env.PATH instead of $PATH
   ╰────
```

# User-Facing Changes

Just the improvement to the error message

# Tests + Formatting
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- `cargo run -- crates/nu-std/tests/run.nu` to run the tests for the
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2023-06-26 05:59:56 +12:00
JT
fbf3f7cf1c
split $nu variable into scope commands and simpler $nu (#9487)
# Description

This splits off `scope` from `$nu`, creating a set of `scope` commands
for the various types of scope you might be interested in.

This also simplifies the `$nu` variable a bit.

# User-Facing Changes

This changes `$nu` to be a bit simpler and introduces a set of `scope`
subcommands.

# Tests + Formatting
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- `cargo run -- crates/nu-std/tests/run.nu` to run the tests for the
standard library

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> use toolkit.nu # or use an `env_change` hook to activate it
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> ```
-->

# After Submitting
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2023-06-21 09:33:01 +12:00
Darren Schroeder
2b181bf69c
update ini dependency (#9426)
# Description

This PR updates the ini dependency.

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

# Tests + Formatting
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Make sure you've run and fixed any issues with these commands:

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clippy::needless_collect -A clippy::result_large_err` to check that
you're using the standard code style
- `cargo test --workspace` to check that all tests pass
- `cargo run -- crates/nu-std/tests/run.nu` to run the tests for the
standard library

> **Note**
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> use toolkit.nu # or use an `env_change` hook to activate it
automatically
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> ```
-->

# After Submitting
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2023-06-13 13:33:00 -05:00
Jakub Žádník
8d8304cf91
Allow recursive module dirs; Require mod.nu in dirs (#9185) 2023-05-13 01:20:33 +03:00
tesla232
8584aa79a2
Span fixes during duration conversion (#9143)
Description: Fix of #8945.


# Description
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---------

Co-authored-by: jpaldino <jpaldino@zaloni.com>
2023-05-12 18:57:50 +02:00
Jakub Žádník
250071939b
Reuse parsed modules (#9125) 2023-05-07 14:41:40 +03:00
Jakub Žádník
0ea973b78b
Fix exported module not found (#9121) 2023-05-06 23:55:10 +03:00
Jakub Žádník
a2a346e39c
Allow creating modules from directories (#9066) 2023-05-06 21:39:54 +03:00
WindSoilder
345cdef113
Fix overlay's help message lead to internal error (#9087) 2023-05-03 14:08:54 +03:00
Jelle Besseling
8ddebcb932
Add $env.CURRENT_FILE variable (#8861)
Co-authored-by: Jelle Besseling <jelle@bigbridge.nl>
2023-04-13 23:33:29 +03:00