Allow `++=` to work in all situations `++` does, namely for appending
single elements: `$list ++= 1`.
Resolve#11087
# Description
Bring `++=` to parity with `++`.
# User-Facing Changes
It is now possible to do `$list ++= 1` (appending a single element).
Similarly, this can be done:
```Nushell
~> mut a = [1]
~> $a ++= 2
~> a
╭───┬───╮
│ 0 │ 1 │
│ 1 │ 2 │
╰───┴───╯
```
# Tests + Formatting
Added two tests:
- `commands::assignment::append_assign::append_assign_single_element`
- `commands::assignment::append_assign::append_assign_to_single_element`
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# Description
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It turns out that I left a bug in
[#11144](https://github.com/nushell/nushell/pull/11144/), which
introduced a spread operator in record literals. When highlighting
subexpressions that are spread inside records, the spread operator and
the token before it are insert twice. Currently, when you type `{ ...()
}`, this is what you'll see:
With the PR, the behavior is as expected:
I'm still not sure how `FlatShape` works, I just copied the existing
logic for flattening key-value pairs in records, so it's possible
there's still issues, but I haven't found any yet (tried spreading
subexpressions, variables, and records).
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
Highlighting for subexpressions spread inside records should no longer
be screwed up.
# Tests + Formatting
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crates/nu-std"` to run the tests for the standard library
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Is there any way to test flattening/syntax highlighting?
# After Submitting
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Goes towards implementing #10598, which asks for a spread operator in
lists, in records, and when calling commands (continuation of #11006,
which only implements it in lists)
# Description
This PR is for adding a spread operator that can be used when building
records. Additional functionality can be added later.
Changes:
- Previously, the `Expr::Record` variant held `(Expression, Expression)`
pairs. It now holds instances of an enum `RecordItem` (the name isn't
amazing) that allows either a key-value mapping or a spread operator.
- `...` will be treated as the spread operator when it appears before
`$`, `{`, or `(` inside records (no whitespace allowed in between) (not
implemented yet)
- The error message for duplicate columns now includes the column name
itself, because if two spread records are involved in such an error, you
can't tell which field was duplicated from the spans alone
`...` will still be treated as a normal string outside records, and even
in records, it is not treated as a spread operator when not followed
immediately by a `$`, `{`, or `(`.
# User-Facing Changes
Users will be able to use `...` when building records.
```
> let rec = { x: 1, ...{ a: 2 } }
> $rec
╭───┬───╮
│ x │ 1 │
│ a │ 2 │
╰───┴───╯
> { foo: bar, ...$rec, baz: blah }
╭─────┬──────╮
│ foo │ bar │
│ x │ 1 │
│ a │ 2 │
│ baz │ blah │
╰─────┴──────╯
```
If you want to update a field of a record, you'll have to use `merge`
instead:
```
> { ...$rec, x: 5 }
Error: nu:🐚:column_defined_twice
× Record field or table column used twice: x
╭─[entry #2:1:1]
1 │ { ...$rec, x: 5 }
· ──┬─ ┬
· │ ╰── field redefined here
· ╰── field first defined here
╰────
> $rec | merge { x: 5 }
╭───┬───╮
│ x │ 5 │
│ a │ 2 │
╰───┴───╯
```
# Tests + Formatting
# After Submitting
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.
# Description
Close: #10278
This pr introduces `o>>`, `e>>`, `o+e>>` to allow redirection to append
to a file.
Examples:
```nushell
echo abc o>> a.txt
echo abc o>> a.txt
cat asdf e>> a.txt
cat asdf e>> a.txt
cat asdf o+e>> a.txt
```
~~TODO:~~
~~1. currently internal commands with `o+e>` redirect to a variable is
broken: `let x = "a.txt"; echo abc o+e> $x`, not sure when it was
introduced...~~
~~2. redirect stdout and stderr with append mode doesn't supported yet:
`cat asdf o>>a.txt e>>b.ext`~~
~~For these 2 items, I'd like to fix them in different prs.~~
Already done in this pr
# Description
This PR enables a new feature that shows which externals are found in
your path via the syntax highlighter as you type.
This idea could use some improvement where it caches the items in your
path and on some trigger, expires that cache and creates a new on. Right
now, all it does is call the `which` crate on every character you type.
This could be problematic if you have hundreds of paths in your PATH or
if some of your paths in your Path point to extraordinarily slow file
systems. WSL pointing to Windows comes to mind. Either way, I've thrown
it up here for people to try and provide feedback. I think the novelty
of showing what is valid and what isn't is pretty cool. I believe
fish-shell also does this, IIRC.
# User-Facing Changes
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helps us keep track of breaking changes. -->
# Tests + Formatting
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# After Submitting
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# Description
Fixes: #10271
Given the following script:
```shell
# test.sh
echo aaaaa
echo bbbbb 1>&2
echo cc
```
This pr makes the following command possible:
```nushell
bash test.sh err> /dev/null | lines | each {|line| $line | str length}
```
## General idea behind the change:
When nushell redirect stderr message to external file
1. it take stdout of external stream, and pass this stream to next
command, so it won't block next pipeline command from running.
2. relative stderr stream are handled by `save` command
These two streams are handled separately, so we need to delegate a
thread to `save` command, or else we'll have a chance to hang nushell,
we have meet a similar before: #5625.
### One case to consider
What if we're failed to save to an external stream? (Like we don't have
a permission to save to a file)?
In this case nushell will just print a waning message, and don't stop
the following scripts from running.
# User-Facing Changes
## Before
```nushell
❯ bash test2.sh err> /dev/null | lines | each {|line| $line | str length}
aaaaa
cc
```
## After
```nushell
❯ bash test2.sh err> /dev/null | lines | each {|line| $line | str length}
╭───┬───╮
│ 0 │ 5 │
│ 1 │ 2 │
╰───┴───╯
```
BTY, after this pr, the following commands are impossible either, it's
important to make sure that the implementation doesn't introduce too
much costs:
```nushell
❯ echo a e> a.txt e> a.txt
Error: × Can't make stderr redirection twice
╭─[entry #1:1:1]
1 │ echo a e> a.txt e> a.txt
· ─┬
· ╰── try to remove one
╰────
❯ echo a o> a.txt o> a.txt
Error: × Can't make stdout redirection twice
╭─[entry #2:1:1]
1 │ echo a o> a.txt o> a.txt
· ─┬
· ╰── try to remove one
╰────
```
# Description
Closes: #7260
About the change:
When we make an internalcall, and meet a `switch` (Flag.arg is None),
nushell will try to see if the switch is called like `--xyz=false` , if
that is true, `parse_long_flag` will return relative value.
# User-Facing Changes
So after the pr, the following would be possible:
```nushell
def build-imp [--push, --release] {
echo $"Doing a build with push: ($push) and release: ($release)"
}
def build [--push, --release] {
build-imp --push=$push --release=$release
}
build --push --release=false
build --push=false --release=true
build --push=false --release=false
build --push --release
build
```
# Tests + Formatting
Done
# After Submitting
Needs to submit a doc update, mentioned about the difference between
`def a [--x] {}` and `def a [--x: bool] {}`
follow-up to
- https://github.com/nushell/nushell/pull/10715
> **Important**
> wait for between 0.87 and 0.88 to land this
# Description
it's time for removal again 😋
this PR removes `def-env` and `export def-env` in favor of `def --env`
# User-Facing Changes
`def-env` and `export def-env` will not be found anymore.
# Tests + Formatting
# After Submitting
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# Description
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Clippy fixes for rust 1.76.0-nightly
# 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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crates/nu-std"` to run the tests for the standard library
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# After Submitting
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follow-up to
- https://github.com/nushell/nushell/pull/10716
> **Important**
> wait for between 0.87 and 0.88 to land this
# Description
it's time for removal again 😋
this PR removes `extern-wrapped` and `export extern-wrapped` in favor of
`def --wrapped`
# User-Facing Changes
`extern-wrapped` and `export extern-wrapped` will not be found anymore.
# Tests + Formatting
# After Submitting
# Description
Fixes: #11033
Sorry for the issue, it's a regression which introduce by this pr:
#10456.
And this pr is going to fix it.
About the change: create a new field named `type_annotated` for
`Arg::Flag` and `Arg::Signature` instead of `arg_explicit_type`
variable.
When we meet a type in `TypeMode`, we set `type_annotated` field of the
argument to be true, then we know that if the arg have a annotated type
easily
# Description
Add an extension trait `IgnoreCaseExt` to nu_utils which adds some case
insensitivity helpers, and use them throughout nu to improve the
handling of case insensitivity. Proper case folding is done via unicase,
which is already a dependency via mime_guess from nu-command.
In actuality a lot of code still does `to_lowercase`, because unicase
only provides immediate comparison and doesn't expose a `to_folded_case`
yet. And since we do a lot of `contains`/`starts_with`/`ends_with`, it's
not sufficient to just have `eq_ignore_case`. But if we get access in
the future, this makes us ready to use it with a change in one place.
Plus, it's clearer what the purpose is at the call site to call
`to_folded_case` instead of `to_lowercase` if it's exclusively for the
purpose of case insensitive comparison, even if it just does
`to_lowercase` still.
# User-Facing Changes
- Some commands that were supposed to be case insensitive remained only
insensitive to ASCII case (a-z), and now are case insensitive w.r.t.
non-ASCII characters as well.
# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
---------
Co-authored-by: Stefan Holderbach <sholderbach@users.noreply.github.com>
Adds a special error, which is triggered by `alias foo=bar` style
commands. It adds a help string which recommends adding spaces.
Resolve#10958
---------
Co-authored-by: Jakub Žádník <kubouch@gmail.com>
# Description
Fixes: #10830
The issue happened during lite-parsing, when we want to put a
`LiteElement` to a `LitePipeline`, we do nothing if relative redirection
target is empty.
So the command `echo aaa o> | ignore` will be interpreted to `echo aaa |
ignore`.
This pr is going to check and return an error if redirection target is
empty.
# User-Facing Changes
## Before
```
❯ echo aaa o> | ignore # nothing happened
```
## After
```nushell
❯ echo aaa o> | ignore
Error: nu::parser::parse_mismatch
× Parse mismatch during operation.
╭─[entry #1:1:1]
1 │ echo aaa o> | ignore
· ─┬
· ╰── expected redirection target
╰────
```
related to
- https://github.com/nushell/nushell/pull/10478
# Description
this PR is the followup removal to
https://github.com/nushell/nushell/pull/10478.
# User-Facing Changes
`$nothing` is now an undefined variable, unless define by the user.
```nushell
> $nothing
Error: nu::parser::variable_not_found
× Variable not found.
╭─[entry #1:1:1]
1 │ $nothing
· ────┬───
· ╰── variable not found.
╰────
```
# Tests + Formatting
# After Submitting
mention that in release notes
# Description
Since the `else` clause for the nested branches check for the first
unmatched argument, this PR brings together all the conditions where the
positional argument shape is numeric using the `matches!` keyword. This
also allows us to and (`&&`) the condition with when no short flags are
found unlike the `if let ...` statements. Finally, we can handle any
`unmatched_short_flags` at one place.
# User-Facing Changes
No user facing changes.
When looking into `lite_parse` function, I found that it contains some
duplicate code, and they can be expressed as an action called
`push_command_to(pipeline)`.
And I believe it will make our life easier to support something like
`o>> a.txt`, `e>> a.txt`.
In the final match of `lex_item`, we'll return `Err(ParseError)` in rare
case, normally we'll return None.
So I think making error part mutable can reduce some code, and it's
better if we want to add more lex items.
# Description
Relax typechecking of key-less `table`/`record`
Assume that they are acceptable for more narrowly specified
`table<...>`/`record<...>` where `...` specifies keys and potentially
types for those keys/columns.
This ensures that you can use commands that specify general return
values statically with more specific input-/args-type requirements.
Reduces the power of the type-check a bit but unlocks you to actually
use the specific annotations in more places.
Incompatibilities will only be raised if an output type declares
specific columns/keys.
Closes#9702
Supersedes #10594 as a simpler solution requiring no extra distinction.
h/t @1kinoti, @NotLebedev
# User-Facing Changes
Now legal at type-check time
```nu
def foo []: nothing -> table { [] }
def foo []: nothing -> table<> { ls }
def bar []: table<a:int,b:string> -> nothing {}
foo | bar
```
# Tests + Formatting
- 1 explicit test with specified relaxed return type passed to concrete
expected input type
- 1 test leveraging the general output type of a built-in command
- 1 test wrapping a general built-in command and verifying the type
inference in the function body
# 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
# Description
To my knowledge `type@completer` annotations only make sense in
arguments at the moment.
Restrict the parsing.
Also fix a bug in parsing the completer annotation should there be more
than 1 `@`
- Add test that we disallow completer in type
- Guard against `@` inside command name
- Disallow custom completers in type specification
# User-Facing Changes
Error when annotating a variable or input-output type with a completer
# Tests + Formatting
Tests to verify the error message
# Description
The description `Custom` doesn't really reflect meaning in the set of
`SyntaxShape`. Makes it a bit more verbose but explicit
# User-Facing Changes
Only hypothetically breaking as plugins can not effectively use a
requirement on `SyntaxShape::Custom`.
# Tests + Formatting
(-)
# Description
Those `SyntaxShape`s can not coerce to `Value`s or `Type`s that can be
used by the user in an argument or input-output-type position.
Supporting them doesn't make sense.
# User-Facing Changes
Removal of useless "types" in argument type or input/output type
positions
# Tests + Formatting
No adjustment necessary
# Description
We don't use this shape during parsing and never reference it in command
signatures. Thus it should be removed.
# User-Facing Changes
None functional.
Plugin authors that used it would never be provided with data that
specifically matched `SyntaxShape::Variable`
Builds using it will now fail.
# Tests + Formatting
NA
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 👍
# 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
# 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:
# 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
# Description
Fixes: #10450
This pr differentiating between `--x: bool` and `--x`
Here are examples which demostrate difference between them:
```nushell
def a [--x: bool] { $x };
a --x # not allowed, you need to parse a value to the flag.
a # it's allowed, and the value of `$x` is false, which behaves the same to `def a [--x] { $x }; a`
```
For boolean flag with default value, it works a little bit different to
#10450 mentioned:
```nushell
def foo [--option: bool = false] { $option }
foo # output false
foo --option # not allowed, you need to parse a value to the flag.
foo --option true # output true
```
# User-Facing Changes
After the pr, the following code is not allowed:
```nushell
def a [--x: bool] { $x }; a --x
```
Instead, you have to pass a value to flag `--x` like `a --x false`. But
bare flag works in the same way as before.
## Update: one more breaking change to help on #7260
```
def foo [--option: bool] { $option == null }
foo
```
After the pr, if we don't use a boolean flag, the value will be `null`
instead of `true`. Because here `--option: bool` is treated as a flag
rather than a switch
---------
Co-authored-by: amtoine <stevan.antoine@gmail.com>
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# Description
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When parse_range get an item like ((((1..2)))) it would try to parse
"((((1" with a long chain of recursive parsers, namely:
- parse_value
- parse_paren_expr
- parse_full_cell_path
- parse_block
- parse_pipeline
- parse_builtin_commands
- parse_expression
- parse_math_expression
- parse_value
- ...
where `parse_paren_expr` calls `parse_range` in turn. Because at any
time in the chain `parse_paren_expr` can call `parse_range`, which will
then continue the chain, we get quadratic number of function calls, each
linear on the size of the input
By checking with the lexer that the parens are matched, we prevent the
long chain from being called on unmatched braces. Now, this is still
more quadratic than it needs to be, to fix that, we should process
parens only once, instead of on each recursive call
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
Speed improvements in some edge cases
# Tests + Formatting
Not sure how to test this, maybe I could add a benchmark
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- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `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.
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# Other notes
Found using the fuzzer, by setting a timeout on max run-time. It also
found a stack-overflow on too many parentheses, which this doesn't fix.
# Description
Fixes: #10410
So the following script is possible:
```nushell
def a [b: any = null] { let b = ($b | default "default_b"); }
a "given_b"
```
## About the change
When parsing signature, and nushell meets something like `a: any`, it
force the parser to treat `a` as `any` type. This is what
`arg_explicit_type` means, it's only set when we goes into
`ParseMode::TypeMode`, and it will be reset to `false` if the token goes
to next argument.
so, when we have something like this: `def a [b: any = null] { $b }`,
the type of `$b` won't be overwritten.
But if we have something like this: `def a [b = null] { $b }`, the type
of `$b` is not annotated, so we make it to be `nothing`(which is the
type of null)
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# Description
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Before this change, parsing `[[[[[[[[[[[[[[[[[[[[[[` would cause nushell
to consume several gigabytes of memory, now it should be linear in time.
The old code first tried parsing the head of the table as a list and
then after that it checked if it got more arguments. If it didn't, it
throws away the previous result and tries to parse the whole thing as a
list, which means we call `parse_list_expression` twice for each call to
`parse_table_expression`, resulting in the exponential growth
The fix is to simply check that we have all the arguments we need before
parsing the head of the table, so we know that we will either call
parse_list_expression only on sub-expressions or on the whole thing,
never both.
Fixes#10438
# User-Facing Changes
Should give a noticable speedup when typing a sequence of `[[[[[[` open
brackets
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
# Tests + Formatting
I would like to add tests, but I'm not sure how to do that without
crashing CI with OOM on regression
- [x] Don't forget to add tests that cover your changes.
- [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
<!--
> **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.
# Description
This PR adds a fuzzer for the nu-path and the nu-parser crate.
Now you can go to `crates/nu-path/fuzz`/`crates/nu-parser/fuzz` and run `cargo fuzz` to
find crashes.
https://github.com/nushell/nushell/issues/10365 and #9417 was found by
this
---------
Co-authored-by: sholderbach <sholderbach@users.noreply.github.com>
