# Description
After merging #13788, I get an error message which says that
`use_grid_icons` is invalid.
I think it's good to report the specific error, and guide user to delete
it.
# Description
After looking at #13751 I noticed that the config setting
`use_grid_icons` seems out of place. So, I removed it from the config
and made it a parameter to the `grid` command.
# Description
This PR fixes#13732. However, I don't think it's a proper fix.
1. It doesn't really show what the problem is.
2. It kind of side-steps the error entirely.
I do think the change in span.rs may be valid because I don't think
span.end should ever be 0. In the example in 13732 the span end was
always 0 and so that made contains_span() return true, which seems like
a false positive.
The `checked_sub()` in ide.rs kind of just stops it from failing
outloud.
I'll leave it to smarter folks than me to land this if they think it's
worthy.
Discovered by @cptpiepmatz that #13749 broke the standalone check for
`nu-protocol`
Explicit use of the feature as workspace root also disables all features
for `serde`. Alternatively we could reconsider this there.
# Description
Cleans up and refactors the config code using the `IntoValue` macro.
Shoutout to @cptpiepmatz for making the macro!
# User-Facing Changes
Should be none.
# After Submitting
Somehow refactor the reverse transformation.
Closes#13687Closes#13686
# Description
Light refactoring of `send_request `in `client.rs`. In the end there are
more lines but now the logic is more concise and facilitates adding new
conditions in the future. Unit tests ran fine and I tested a few cases
manually.
Cool project btw, I'll be using nushell from now on.
# Description
This PR allows the helper attribute `nu_value(rename = "...")` to be
used on struct fields and enum variants. This allows renaming keys and
variants just like [`#[serde(rename =
"name")]`](https://serde.rs/field-attrs.html#rename). This has no
singular variants for `IntoValue` or `FromValue`, both need to use the
same (but I think this shouldn't be an issue for now).
# User-Facing Changes
Users of the derive macros `IntoValue` and `FromValue` may now use
`#[nu_value(rename = "...")]` to rename single fields, but no already
existing code will break.
# Description
This changes the behavior of `tee` to be more transparent when given a
value that isn't a list or range. Previously, anything that wasn't a
byte stream would converted to a list stream using the iterator
implementation, which led to some surprising results. Instead, now, if
the value is a string or binary, it will be treated the same way a byte
stream is, and the output of `tee` is a byte stream instead of the
original value. This is done so that we can synchronize with the other
thread on collect, and potentially capture any error produced by the
closure.
For values that can't be converted to streams, the closure is just run
with a clone of the value instead on another thread. Because we can't
wait for the other thread, there is no way to send an error back to the
original thread, so instead it's just written to stderr using
`report_error_new()`.
There are a couple of follow up edge cases I see where byte streams
aren't necessarily treated exactly the same way strings are, but this
should mostly be a good experience.
Fixes#13489.
# User-Facing Changes
Breaking change.
- `tee` now outputs and sends string/binary stream for string/binary
input.
- `tee` now outputs and sends the original value for any other input
other than lists/ranges.
# Tests + Formatting
Added for new behavior.
# After Submitting
- [ ] release notes: breaking change, command change
removing the `std` feature as well would drop some dependencies tied to
`rust_decimal` from the `Cargo.lock` but unclear to me what the actual
impact on compile times is.
We may want to consider dropping the `byte-unit` dependency altogether
as we have a significant fraction of our own logic to support the byte
units with 1024 and 1000 prefixes. Not sure which fraction is covered by
us or the dependency.
# Description
Implements `IntoValue` for `&str` and `DateTime` as well as other
nushell types like `Record` and `Closure`. Also allows `HashMap`s with
keys besides `String` to implement `IntoValue`.
# Description
`cargo` somewhat recently gained the capability to store `lints`
settings for the crate and workspace, that can override the defaults
from `rustc` and `clippy` lints. This means we can enforce some lints
without having to actively pass them to clippy via `cargo clippy -- -W
...`. So users just forking the repo have an easier time to follow
similar requirements like our CI.
## Limitation
An exception that remains is that those lints apply to both the primary
code base and the tests. Thus we can't include e.g. `unwrap_used`
without generating noise in the tests. Here the setup in the CI remains
the most helpful.
## Included lints
- Add `clippy::unchecked_duration_subtraction` (added by #12549)
# User-Facing Changes
Running `cargo clippy --workspace` should be closer to the CI. This has
benefits for editor configured runs of clippy and saves you from having
to use `toolkit` to be close to CI in more cases.
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# Description
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@sholderbach mentioned that I introduced `convert_case` as a dependency
while we already had `heck` for case conversion. So in this PR replaced
the use `convert_case` with `heck`. Mostly I rebuilt the `convert_case`
API with `heck` to work with it as I like the API of `convert_case` more
than `heck`.
# User-Facing Changes
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Nothing changed, the use of `convert_case` wasn't exposed anywhere and
all case conversions are still available.
# Tests + Formatting
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- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
> **Note**
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No new tests required but my tests in `test_derive` captured some errors
I made while developing this change, (hurray, tests work 🎉)
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
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# Description
Using derived `IntoValue` and `FromValue` implementations on structs
with named fields currently produce `Value::Record`s where each key is
the key of the Rust struct. For records like the `$nu` constant, that
won't work as this record uses `kebab-case` for it's keys. To accomodate
this, I upgraded the `#[nu_value(rename_all = "...")]` helper attribute
to also work on structs with named fields which will rename the keys via
the same case conversion as the enums already have.
# User-Facing Changes
Users of these macros may choose different key styles for their in
`Value` representation.
# Tests + Formatting
I added the same test suite as enums already have and updated the traits
documentation with more examples that also pass the doc test.
# After Submitting
I played around with the `$nu` constant but got stuck at the point that
these keys are kebab-cased, with this, I can play around more with it.
# Description
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Currently the parser and the documentation generation use the signature
of the command, which means that it doesn't pick up on the changed name
of the `main` block, and therefore shows the name of the command as
"main" and doesn't find the subcommands. This PR changes the
aforementioned places to use the block signature to fix these issues.
This closes#13397. Incidentally it also causes input/output types to be
shown in the help, which is kinda pointless for scripts since they don't
operate on structured data but maybe not worth the effort to remove.
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
```
# example.nu
export def main [] { help main }
export def 'main sub' [] { print 'sub' }
```
Before:
After:
# Tests
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- `cargo test --workspace` to check that all tests pass (on Windows make
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mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
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> ```
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Tests are still missing for the subcommands and the input/output types
---------
Co-authored-by: Stefan Holderbach <sholderbach@users.noreply.github.com>
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# Description
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In this PR I expanded the helper attribute `#[nu_value]` on
`#[derive(FromValue)]`. It now allows the usage of `#[nu_value(type_name
= "...")]` to set a type name for the `FromValue::expected_type`
implementation. Currently it only uses the default implementation but
I'd like to change that without having to manually implement the entire
trait on my own.
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
Users that derive `FromValue` may now change the name of the expected
type.
# Tests + Formatting
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check that you're using the standard code style
- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library
> **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
> ```
-->
I added some tests that check if this feature work and updated the
documentation about the derive macro.
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
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# Description
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I was working with byte collections like `Vec<u8>` and
[`bytes::Bytes`](https://docs.rs/bytes/1.7.1/bytes/struct.Bytes.html),
both are currently not possible to be used directly in a struct that
derives `IntoValue` and `FromValue` at the same time. The `Vec<u8>` will
convert itself into a `Value::List` but expects a `Value::String` or
`Value::Binary` to load from. I now also implemented that it can load
from `Value::List` just like the other `Vec<uX>` versions. For further
working with byte collections the type `bytes::Bytes` is wildly used,
therefore I added a implementation for it. `bytes` is already part of
the dependency graph as many crates (more than 5000 to crates.io) use
it.
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
User of `nu-protocol` as library, e.g. plugin developers, can now use
byte collections more easily in their data structures and derive
`IntoValue` and `FromValue` for it.
# Tests + Formatting
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tests for the standard library
> **Note**
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> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
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> ```
-->
I added a few tests that check that these byte collections are correctly
translated in and from `Value`. They live in `test_derive.rs` as part of
the `ByteContainer` and I also explicitely tested that `FromValue` for
`Vec<u8>` works as expected.
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
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Maybe it should be explored if `Value::Binary` should use `bytes::Bytes`
instead of `Vec<u8>`.
# Description
The meaning of the word usage is specific to describing how a command
function is *used* and not a synonym for general description. Usage can
be used to describe the SYNOPSIS or EXAMPLES sections of a man page
where the permitted argument combinations are shown or example *uses*
are given.
Let's not confuse people and call it what it is a description.
Our `help` command already creates its own *Usage* section based on the
available arguments and doesn't refer to the description with usage.
# User-Facing Changes
`help commands` and `scope commands` will now use `description` or
`extra_description`
`usage`-> `description`
`extra_usage` -> `extra_description`
Breaking change in the plugin protocol:
In the signature record communicated with the engine.
`usage`-> `description`
`extra_usage` -> `extra_description`
The same rename also takes place for the methods on
`SimplePluginCommand` and `PluginCommand`
# Tests + Formatting
- Updated plugin protocol specific changes
# After Submitting
- [ ] update plugin protocol doc
# Description
Fixes#11267
Shifting by a `shift >= num_bits` is undefined in the underlying
operation. Previously we also had an overflow on negative shifts for the
operators `bit-shl` and `bit-shr`
Furthermore I found a severe bug in the implementation of shifting of
`binary` data with the commands `bits shl` and `bits shr`, this
categorically produced incorrect results with shifts that were not
`shift % 4 == 0`. `bits shr` also was able to produce outputs with
different size to the input if the shift was exceeding the length of the
input data by more than a byte.
# User-Facing Changes
It is now an error trying to shift by more than the available bits with:
- `bit-shl` operator
- `bit-shr` operator
- command `bits shl`
- command `bits shr`
# Tests + Formatting
Added testing for all relevant cases
# Description
As part of fixing https://github.com/nushell/nushell/issues/13586, this
PR checks the types of the operands when creating a range. Stuff like
`0..(glob .)` will be rejected at parse time. Additionally, `0..$x` will
be treated as a range and rejected if `x` is not defined, rather than
being treated as a string. A separate PR will need to be made to do
reject streams at runtime, so that stuff like `0..(open /dev/random)`
doesn't hang.
Internally, this PR adds a `ParseError::UnsupportedOperationTernary`
variant, for when you have a range like `1..2..(glob .)`.
# User-Facing Changes
Users will now receive an error if any of the operands in the ranges
they construct have types that aren't compatible with `Type::Number`.
Additionally, if a piece of code looks like a range but some parse error
is encountered while parsing it, that piece of code will still be
treated as a range and the user will be shown the parse error. This
means that a piece of code like `0..$x` will be treated as a range no
matter what. Previously, if `x` weren't the expression would've been
treated as a string `"0..$x"`. I feel like it makes the language less
complicated if we make it less context-sensitive.
Here's an example of the error you get:
```
> 0..(glob .)
Error: nu::parser::unsupported_operation
× range is not supported between int and any.
╭─[entry #1:1:1]
1 │ 0..(glob .)
· ─────┬─────┬┬
· │ │╰── any
· │ ╰── int
· ╰── doesn't support these values
╰────
```
And as an image:
Note: I made the operands themselves (above, `(glob .)`) be garbage,
rather than the `..` operator itself. This doesn't match the behavior of
the math operators (if you do `1 + "foo"`, `+` gets highlighted red).
This is because with ranges, the range operators aren't `Expression`s
themselves, so they can't be turned into garbage. I felt like here, it
makes more sense to highlight the individual operand anyway.
# Description
Something I meant to add a long time ago. We currently don't have a
convenient way to print raw binary data intentionally. You can pipe it
through `cat` to turn it into an unknown stream, or write it to a file
and read it again, but we can't really just e.g. generate msgpack and
write it to stdout without this. For example:
```nushell
[abc def] | to msgpack | print --raw
```
This is useful for nushell scripts that will be piped into something
else. It also means that `nu_plugin_nu_example` probably doesn't need to
do this anymore, but I haven't adjusted it yet:
```nushell
def tell_nushell_encoding [] {
print -n "\u{0004}json"
}
```
This happens to work because 0x04 is a valid UTF-8 character, but it
wouldn't be possible if it were something above 0x80.
`--raw` also formats other things without `table`, I figured the two
things kind of go together. The output is kind of like `to text`.
Debatable whether that should share the same flag, but it was easier
that way and seemed reasonable.
# User-Facing Changes
- `print` new flag: `--raw`
# Tests + Formatting
Added tests.
# After Submitting
- [ ] release notes (command modified)
This PR will close#13501
# Description
This PR expands on [the relay of signals to running plugin
processes](https://github.com/nushell/nushell/pull/13181). The Ctrlc
relay has been generalized to SignalAction::Interrupt and when
reset_signal is called on the main EngineState, a SignalAction::Reset is
now relayed to running plugins.
# User-Facing Changes
The signal handler closure now takes a `signals::SignalAction`, while
previously it took no arguments. The handler will now be called on both
interrupt and reset. The method to register a handler on the plugin side
is now called `register_signal_handler` instead of
`register_ctrlc_handler`
[example](https://github.com/nushell/nushell/pull/13510/files#diff-3e04dff88fd0780a49778a3d1eede092ec729a1264b4ef07ca0d2baa859dad05L38).
This will only affect plugin authors who have started making use of
https://github.com/nushell/nushell/pull/13181, which isn't currently
part of an official release.
The change will also require all of user's plugins to be recompiled in
order that they don't error when a signal is received on the
PluginInterface.
# Testing
```
: example ctrlc
interrupt status: false
waiting for interrupt signal...
^Cinterrupt status: true
peace.
Error: × Operation interrupted
╭─[display_output hook:1:1]
1 │ if (term size).columns >= 100 { table -e } else { table }
· ─┬
· ╰── This operation was interrupted
╰────
: example ctrlc
interrupt status: false <-- NOTE status is false
waiting for interrupt signal...
^Cinterrupt status: true
peace.
Error: × Operation interrupted
╭─[display_output hook:1:1]
1 │ if (term size).columns >= 100 { table -e } else { table }
· ─┬
· ╰── This operation was interrupted
╰────
```
# Description
Part 4 of replacing std::path types with nu_path types added in
https://github.com/nushell/nushell/pull/13115. This PR migrates various
tests throughout the code base.
In some `if let`s we ran the `SharedCow::to_mut` for the test and to get
access to a mutable reference in the happy path. Internally
`Arc::into_mut` has to read atomics and if necessary clone.
For else branches, where we still want to modify the record we
previously called this again (not just in rust, confirmed in the asm).
This would have introduced a `call` instruction and its cost (even if it
would be guaranteed to take the short path in `Arc::into_mut`).
Lifting it get's rid of this.
# Description
Part 3 of replacing `std::path` types with `nu_path` types added in
#13115. This PR targets the paths listed in `$nu`. That is, the home,
config, data, and cache directories.
- **Doccomment style fixes**
- **Forgotten stuff in `nu-pretty-hex`**
- **Don't `for` around an `Option`**
- and more
I think the suggestions here are a net positive, some of the suggestions
moved into #13498 feel somewhat arbitrary, I also raised
https://github.com/rust-lang/rust-clippy/issues/13188 as the nightly
`byte_char_slices` would require either a global allow or otherwise a
ton of granular allows or possibly confusing bytestring literals.
- **Suggested default impl for the new `*Stack`s**
- **Change a hashmap to make clippy happy**
- **Clone from fix**
- **Fix conditional unused in test**
- then **Bump rust toolchain**
# Description
This PR adds a new method to `EngineInterface`: `register_ctrlc_handler`
which takes a closure to run when the plugin's driving engine receives a
ctrlc-signal. It also adds a mirror of the `signals` attribute from the
main shell `EngineState`.
This is an example of how a plugin which makes a long poll http request
can end the request on ctrlc:
https://github.com/cablehead/nu_plugin_http/blob/main/src/commands/request.rs#L68-L77
To facilitate the feature, a new attribute has been added to
`EngineState`: `ctrlc_handlers`. This is a Vec of closures that will be
run when the engine's process receives a ctrlc signal.
When plugins are added to an `engine_state` during a `merge_delta`, the
engine passes the ctrlc_handlers to the plugin's
`.configure_ctrlc_handler` method, which gives the plugin a chance to
register a handler that sends a ctrlc packet through the
`PluginInterface`, if an instance of the plugin is currently running.
On the plugin side: `EngineInterface` also has a ctrlc_handlers Vec of
closures. Plugin calls can use `register_ctrlc_handler` to register a
closure that will be called in the plugin process when the
PluginInput::Ctrlc command is received.
For future reference these are some alternate places that were
investigated for tying the ctrlc trigger to transmitting a Ctrlc packet
through the `PluginInterface`:
- Directly from `src/signals.rs`: the handler there would need a
reference to the Vec<Arc<RegisteredPlugins>>, which would require us to
wrap the plugins in a Mutex, which we don't want to do.
- have `PersistentPlugin.get_plugin` pass down the engine's
CtrlcHandlers to .get and then to .spawn (if the plugin isn't already
running). Once we have CtrlcHandlers in spawn, we can register a handler
to write directly to PluginInterface. We don't want to double down on
passing engine_state to spawn this way though, as it's unpredictable
because it would depend on whether the plugin has already been spawned
or not.
- pass `ctrlc_handlers` to PersistentPlugin::new so it can store it on
itself so it's available to spawn.
- in `PersistentPlugin.spawn`, create a handler that sends to a clone of
the GC event loop's tx. this has the same issues with regards to how to
get CtrlcHandlers to the spawn method, and is more complicated than a
handler that writes directly to PluginInterface
# User-Facing Changes
No breaking changes
---------
Co-authored-by: Ian Manske <ian.manske@pm.me>
# Description
Seems like I developed a bit of a bad habit of trying to link
```rust
/// [`.foo()`]
```
in docstrings, and this just doesn't work automatically; you have to do
```rust
/// [`.foo()`](Self::foo)
```
if you want it to actually link. I think I found and replaced all of
these.
# User-Facing Changes
Just docs.
# Description
Fixes#13441.
I must have forgotten that `Expr::Range` can contain other expressions,
so I wasn't searching for `$in` to replace within it. Easy fix.
# User-Facing Changes
Bug fix, ranges like `6 | 3..$in` work as expected now.
# Tests + Formatting
Added regression test.
# Description
This corrects the parsing of unknown arguments provided to known
externals to behave exactly like external arguments passed to normal
external calls.
I've done this by adding a `SyntaxShape::ExternalArgument` which
triggers the same parsing rules.
Because I didn't like how the highlighting looked, I modified the
flattener to emit `ExternalArg` flat shapes for arguments that have that
syntax shape and are plain strings/globs. This is the same behavior that
external calls have.
Aside from passing the tests, I've also checked manually that the
completer seems to work adequately. I can confirm that specified
positional arguments get completion according to their specified type
(including custom completions), and then anything remaining gets
filepath style completion, as you'd expect from an external command.
Thanks to @OJarrisonn for originally finding this issue.
# User-Facing Changes
- Unknown args are now parsed according to their specified syntax shape,
rather than `Any`. This may be a breaking change, though I think it's
extremely unlikely in practice.
- The unspecified arguments of known externals are now highlighted /
flattened identically to normal external arguments, which makes it more
clear how they're being interpreted, and should help the completer
function properly.
- Known externals now have an implicit rest arg if not specified named
`args`, with a syntax shape of `ExternalArgument`.
# Tests + Formatting
Tests added for the new behaviour. Some old tests had to be corrected to
match.
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
- [ ] release notes (bugfix, and debatable whether it's a breaking
change)
# Description
Trying to help @amtoine out here - the spans calculated by `ast::Call`
by `span()` and `argument_span()` are suspicious and are not properly
guarding against `end` that might be before `start`. Just using
`Span::merge()` / `merge_many()` instead to try to make the behaviour as
simple and consistent as possible. Hopefully then even if the arguments
have some crazy spans, we don't have spans that are just totally
invalid.
# Tests + Formatting
I did check that everything passes with this.
fixes https://github.com/nushell/nushell/issues/13378
# Description
This PR tries to improve usage of system APIs to determine the location
of vendored autoload files.
# User-Facing Changes
The paths listed in #13180 and #13217 are changing. This has not been
part of a release yet, so arguably the user facing changes are only to
unreleased features anyway.
# Tests + Formatting
Haven't done, but if someone wants to help me here, I'm open to doing
it. I just don't know how to properly test this.
# After Submitting
# Description
Adds functionality to the plugin interface to support calling internal
commands from plugins. For example, using `view ir --json`:
```rust
let closure: Value = call.req(0)?;
let Some(decl_id) = engine.find_decl("view ir")? else {
return Err(LabeledError::new("`view ir` not found"));
};
let ir_json = engine.call_decl(
decl_id,
EvaluatedCall::new(call.head)
.with_named("json".into_spanned(call.head), Value::bool(true, call.head))
.with_positional(closure),
PipelineData::Empty,
true,
false,
)?.into_value()?.into_string()?;
let ir = serde_json::from_value(&ir_json);
// ...
```
# User-Facing Changes
Plugin developers can now use `EngineInterface::find_decl()` and
`call_decl()` to call internal commands, which could be handy for
formatters like `to csv` or `to nuon`, or for reflection commands that
help gain insight into the engine.
# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
- [ ] release notes
- [ ] update plugin protocol documentation: `FindDecl`, `CallDecl`
engine calls; `Identifier` engine call response
# Description
This grew quite a bit beyond its original scope, but I've tried to make
`$in` a bit more consistent and easier to work with.
Instead of the parser generating calls to `collect` and creating
closures, this adds `Expr::Collect` which just evaluates in the same
scope and doesn't require any closure.
When `$in` is detected in an expression, it is replaced with a new
variable (also called `$in`) and wrapped in `Expr::Collect`. During
eval, this expression is evaluated directly, with the input and with
that new variable set to the collected value.
Other than being faster and less prone to gotchas, it also makes it
possible to typecheck the output of an expression containing `$in`,
which is nice. This is a breaking change though, because of the lack of
the closure and because now typechecking will actually happen. Also, I
haven't attempted to typecheck the input yet.
The IR generated now just looks like this:
```gas
collect %in
clone %tmp, %in
store-variable $in, %tmp
# %out <- ...expression... <- %in
drop-variable $in
```
(where `$in` is the local variable created for this collection, and not
`IN_VARIABLE_ID`)
which is a lot better than having to create a closure and call `collect
--keep-env`, dealing with all of the capture gathering and allocation
that entails. Ideally we can also detect whether that input is actually
needed, so maybe we don't have to clone, but I haven't tried to do that
yet. Theoretically now that the variable is a unique one every time, it
should be possible to give it a type - I just don't know how to
determine that yet.
On top of that, I've also reworked how `$in` works in pipeline-initial
position. Previously, it was a little bit inconsistent. For example,
this worked:
```nushell
> 3 | do { let x = $in; let y = $in; print $x $y }
3
3
```
However, this causes a runtime variable not found error on the second
`$in`:
```nushell
> def foo [] { let x = $in; let y = $in; print $x $y }; 3 | foo
Error: nu:🐚:variable_not_found
× Variable not found
╭─[entry #115:1:35]
1 │ def foo [] { let x = $in; let y = $in; print $x $y }; 3 | foo
· ─┬─
· ╰── variable not found
╰────
```
I've fixed this by making the first element `$in` detection *always*
happen at the block level, so if you use `$in` in pipeline-initial
position anywhere in a block, it will collect with an implicit
subexpression around the whole thing, and you can then use that `$in`
more than once. In doing this I also rewrote `parse_pipeline()` and
hopefully it's a bit more straightforward and possibly more efficient
too now.
Finally, I've tried to make `let` and `mut` a lot more straightforward
with how they handle the rest of the pipeline, and using a redirection
with `let`/`mut` now does what you'd expect if you assume that they
consume the whole pipeline - the redirection is just processed as
normal. These both work now:
```nushell
let x = ^foo err> err.txt
let y = ^foo out+err>| str length
```
It was previously possible to accomplish this with a subexpression, but
it just seemed like a weird gotcha that you couldn't do it. Intuitively,
`let` and `mut` just seem to take the whole line.
- closes#13137
# User-Facing Changes
- `$in` will behave more consistently with blocks and closures, since
the entire block is now just wrapped to handle it if it appears in the
first pipeline element
- `$in` no longer creates a closure, so what can be done within an
expression containing `$in` is less restrictive
- `$in` containing expressions are now type checked, rather than just
resulting in `any`. However, `$in` itself is still `any`, so this isn't
quite perfect yet
- Redirections are now allowed in `let` and `mut` and behave pretty much
how you'd expect
# Tests + Formatting
Added tests to cover the new behaviour.
# After Submitting
- [ ] release notes (definitely breaking change)
# Description
The name of the `group` command is a little unclear/ambiguous.
Everything I look at it, I think of `group-by`. I think `chunks` more
clearly conveys what the `group` command does. Namely, it divides the
input list into chunks of a certain size. For example,
[`slice::chunks`](https://doc.rust-lang.org/std/primitive.slice.html#method.chunks)
has the same name. So, this PR adds a new `chunks` command to replace
the now deprecated `group` command.
The `chunks` command is a refactored version of `group`. As such, there
is a small performance improvement:
```nushell
# $data is a very large list
> bench { $data | chunks 2 } --rounds 30 | get mean
474ms 921µs 190ns
# deprecation warning was disabled here for fairness
> bench { $data | group 2 } --rounds 30 | get mean
592ms 702µs 440ns
> bench { $data | chunks 200 } --rounds 30 | get mean
374ms 188µs 318ns
> bench { $data | group 200 } --rounds 30 | get mean
481ms 264µs 869ns
> bench { $data | chunks 1 } --rounds 30 | get mean
642ms 574µs 42ns
> bench { $data | group 1 } --rounds 30 | get mean
981ms 602µs 513ns
```
# User-Facing Changes
- `group` command has been deprecated in favor of new `chunks` command.
- `chunks` errors when given a chunk size of `0` whereas `group` returns
chunks with one element.
# Tests + Formatting
Added tests for `chunks`, since `group` did not have any tests.
# After Submitting
Update book if necessary.
# Description
Add `README.md` files to each crate in our workspace (-plugins) and also
include it in the `lib.rs` documentation for <docs.rs> (if there is no
existing `lib.rs` crate documentation)
In all new README I added the defensive comment that the crates are not
considered stable for public consumption. If necessary we can adjust
this if we deem a crate useful for plugin authors.
# Description
This adds tracing for each individual instruction to the `Debugger`
trait. Register contents can be inspected both when entering and leaving
an instruction, and if an instruction produced an error, a reference to
the error is also available. It's not the full `EvalContext` but it's
most of the important parts for getting an idea of what's going on.
Added support for all of this to the `Profiler` / `debug profile` as
well, and the output is quite incredible - super verbose, but you can
see every instruction that's executed and also what the result was if
it's an instruction that has a clearly defined output (many do).
# User-Facing Changes
- Added `--instructions` to `debug profile`, which adds the `pc` and
`instruction` columns to the output.
- `--expr` only works in AST mode, and `--instructions` only works in IR
mode. In the wrong mode, the output for those columns is just blank.
# Tests + Formatting
All passing.
# After Submitting
- [ ] release notes
# Description
This improves the error when the determined output of a custom command
doesn't match the specified output type by adding the actual determined
output type.
# User-Facing Changes
Previous: `command doesn't output {0}`
New: `expected {0}, but command outputs {1}`
# Tests + Formatting
Passing.
# After Submitting
- [ ] release notes? (minor change, but helpful)
# Description
Allows `Stack` to have a modified local `Config`, which is updated
immediately when `$env.config` is assigned to. This means that even
within a script, commands that come after `$env.config` changes will
always see those changes in `Stack::get_config()`.
Also fixed a lot of cases where `engine_state.get_config()` was used
even when `Stack` was available.
Closes#13324.
# User-Facing Changes
- Config changes apply immediately after the assignment is executed,
rather than whenever config is read by a command that needs it.
- Potentially slower performance when executing a lot of lines that
change `$env.config` one after another. Recommended to get `$env.config`
into a `mut` variable first and do modifications, then assign it back.
- Much faster performance when executing a script that made
modifications to `$env.config`, as the changes are only parsed once.
# Tests + Formatting
All passing.
# After Submitting
- [ ] release notes
