# Description
`Expression::replace_in_variable` is only called in one place, and it is
called with `new_var_id` = `IN_VARIABLE_ID`. So, it ends up doing
nothing. E.g., adding `debug_assert_eq!(new_var_id, IN_VARIABLE_ID)` in
`replace_in_variable` does not trigger any panic.
# User-Facing Changes
Breaking change for `nu_protocol`.
# Description
While #11057 is merged, it's hard to tell the difference between
`--flag: bool` and `--flag`, and it makes user hard to read custom
commands' signature, and hard to use them correctly.
After discussion, I think we can deprecate `--flag: bool` usage, and
encourage using `--flag` instead.
# User-Facing Changes
The following code will raise warning message, but don't stop from
running.
```nushell
❯ def florb [--dry-run: bool, --another-flag] { "aaa" }; florb
Error: × Deprecated: --flag: bool
╭─[entry #7:1:1]
1 │ def florb [--dry-run: bool, --another-flag] { "aaa" }; florb
· ──┬─
· ╰── `--flag: bool` is deprecated. Please use `--flag` instead, more info: https://www.nushell.sh/book/custom_commands.html
╰────
aaa
```
cc @kubouch
# Tests + Formatting
Done
# After Submitting
- [ ] Add more information under
https://www.nushell.sh/book/custom_commands.html to indicate `--dry-run:
bool` is not allowed,
- [ ] remove `: bool` from custom commands between 0.89 and 0.90
---------
Co-authored-by: Antoine Stevan <44101798+amtoine@users.noreply.github.com>
# Description
Following from #11356, it looks like `Expr::MatchPattern` is no longer
used in any way. This PR removes `Expr::MatchPattern` alongside
`Type::MatchPattern` and `SyntaxShape::MatchPattern`.
# User-Facing Changes
Breaking API change for `nu_protocol`.
# Description
Fixes: #11310
# User-Facing Changes
After the change, the following code will go to error:
```nushell
> def a [--x: int = 3] { "aa" }
> let y = "aa"
> a --x=$y
Error: nu::parser::type_mismatch
× Type mismatch.
╭─[entry #32:2:1]
2 │ let y = "aa"
3 │ a --x=$y
· ─┬
· ╰── expected int, found string
╰────
```
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
# 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
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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- `cargo test --workspace` to check that all tests pass (on Windows make
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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>
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.
# 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] { $option == null }
foo
```
After the pr, if we don't use a boolean flag, the value will be `null`
instead of `true`. Because here `--option: bool` is treated as a flag
rather than a switch
---------
Co-authored-by: amtoine <stevan.antoine@gmail.com>
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# Description
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When parse_range get an item like ((((1..2)))) it would try to parse
"((((1" with a long chain of recursive parsers, namely:
- parse_value
- parse_paren_expr
- parse_full_cell_path
- parse_block
- parse_pipeline
- parse_builtin_commands
- parse_expression
- parse_math_expression
- parse_value
- ...
where `parse_paren_expr` calls `parse_range` in turn. Because at any
time in the chain `parse_paren_expr` can call `parse_range`, which will
then continue the chain, we get quadratic number of function calls, each
linear on the size of the input
By checking with the lexer that the parens are matched, we prevent the
long chain from being called on unmatched braces. Now, this is still
more quadratic than it needs to be, to fix that, we should process
parens only once, instead of on each recursive call
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
Speed improvements in some edge cases
# Tests + Formatting
Not sure how to test this, maybe I could add a benchmark
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crates/nu-std"` to run the tests for the standard library
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automatically
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# After Submitting
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# Other notes
Found using the fuzzer, by setting a timeout on max run-time. It also
found a stack-overflow on too many parentheses, which this doesn't fix.
# Description
Fixes: #10410
So the following script is possible:
```nushell
def a [b: any = null] { let b = ($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
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# After Submitting
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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
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
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# Description
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rustfmt 1.6.0 has added support for formatting [let-else
statements](https://doc.rust-lang.org/rust-by-example/flow_control/let_else.html)
See https://github.com/rust-lang/rustfmt/blob/master/CHANGELOG.md#added
# 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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> ```
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Fix https://github.com/nushell/nushell/issues/10136
# Description
Current nushell only handle path containing '*' as match pattern and
treat '?' as just normal path.
This pr makes path containing '?' is also processed as pattern.
🔴 **Concerns: Need to design/comfirm a consistent rule to handle
dirs/files with '?' in their names.**
Currently:
- if no dir has exactly same name with pattern, it will print the list
of matched directories
- if pattern exactly matches an empty dir's name, it will just print the
empty dir's content ( i.e. `[]`)
- if pattern exactly matches an dir's name, it will perform pattern
match and print all the dir contains
e.g.
```bash
mkdir src
ls s?c
```
| name | type | size | modified |
| ---- | ---- | ------ | --------------------------------------------- |
| src | dir | 1.1 KB | Tue, 29 Aug 2023 07:39:41 +0900 (9 hours ago) |
-----------
```bash
mkdir src
mkdir scc
mkdir scs
ls s?c
```
| name | type | size | modified |
| ---- | ---- | ------ |
------------------------------------------------ |
| scc | dir | 64 B | Tue, 29 Aug 2023 16:55:31 +0900 (14 seconds ago) |
| src | dir | 1.1 KB | Tue, 29 Aug 2023 07:39:41 +0900 (9 hours ago) |
-----------
```bash
mkdir s?c
ls s?c
```
print empty (i.e. ls of dir `s?c`)
-----------
```bash
mkdir -p s?c/test
ls s?c
```
|name|type|size|modified|
|-|-|-|-|
|s?c/test|dir|64 B|Tue, 29 Aug 2023 16:47:53 +0900 (2 minutes ago)|
|src/bytes|dir|480 B|Fri, 25 Aug 2023 17:43:52 +0900 (3 days ago)|
|src/charting|dir|160 B|Fri, 25 Aug 2023 17:43:52 +0900 (3 days ago)|
|src/conversions|dir|160 B|Fri, 25 Aug 2023 17:43:52 +0900 (3 days ago)|
-----------
# User-Facing Changes
User will be able to use '?' to match directory/file.
# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
None
---------
Co-authored-by: Horasal <horsal@horsal.dev>
- fixes#10083
# Description
nushell crashes in the following 2 condition:
- `let a = {}` , then delete `{`
- `let a = | {}`, then delete `{`
When delete `{` the pipeline becomes empty but current `nu-parser`
assume they are non-empty. This pr adds extra empty check to avoid
crash.
Co-authored-by: Horasal <horsal@horsal.dev>
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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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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 -- -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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This PR should close#8036, #9028 (in the negative) and #9118.
Fix for #9118 is a bit pedantic. As reported, the issue is:
```
> 2023-05-07T04:08:45+12:00 - 2019-05-10T09:59:12+12:00
3yr 12month 2day 18hr 9min 33sec
```
with this PR, you now get:
```
> 2023-05-07T04:08:45+12:00 - 2019-05-10T09:59:12+12:00
208wk 1day 18hr 9min 33sec
```
Which is strictly correct, but could still fairly be called "weird date
arithmetic".
# Description
* [x] Abide by constraint that Value::Duration remains a number of
nanoseconds with no additional fields.
* [x] `to_string()` only displays weeks .. nanoseconds. Duration doesn't
have base date to compute months or years from.
* [x] `duration | into record` likewise only has fields for weeks ..
nanoseconds.
* [x] `string | into duration` now accepts compound form of duration
to_string() (e.g '2day 3hr`, not just '2day')
* [x] `duration | into string` now works (and produces the same
representation as to_string(), which may be compound).
# User-Facing Changes
## duration -> string -> duration
Now you can "round trip" an arbitrary duration value: convert it to a
string that may include multiple time units (a "compound" value), then
convert that string back into a duration. This required changes to
`string | into duration` and the addition of `duration | into string'.
```
> 2day + 3hr
2day 3hr # the "to_string()" representation (in this case, a compound value)
> 2day + 3hr | into string
2day 3hr # string value
> 2day + 3hr | into string | into duration
2day 3hr # round-trip duration -> string -> duration
```
Note that `to nuon` and `from nuon` already round-tripped durations, but
use a different string representation.
## potentially breaking changes
* string rendering of a duration no longer has 'yr' or 'month' phrases.
* record from `duration | into record` no longer has 'year' or 'month'
fields.
The excess duration is all lumped into the `week` field, which is the
largest time unit you can
convert to without knowing the datetime from which the duration was
calculated.
Scripts that depended on month or year time units on output will need to
be changed.
### Examples
```
> 365day
52wk 1day
## Used to be:
## 1yr
> 365day | into record
╭──────┬────╮
│ week │ 52 │
│ day │ 1 │
│ sign │ + │
╰──────┴────╯
## used to be:
##╭──────┬───╮
##│ year │ 1 │
##│ sign │ + │
##╰──────┴───╯
> (365day + 4wk + 5day + 6hr + 7min + 8sec + 9ms + 10us + 11ns)
56wk 6day 6hr 7min 8sec 9ms 10µs 11ns
## used to be:
## 1yr 1month 3day 6hr 7min 8sec 9ms 10µs 11ns
## which looks reasonable, but was actually only correct in 75% of the years and 25% of the months in the last 4 years.
> (365day + 4wk + 5day + 6hr + 7min + 8sec + 9ms + 10us + 11ns) | into record
╭─────────────┬────╮
│ week │ 56 │
│ day │ 6 │
│ hour │ 6 │
│ minute │ 7 │
│ second │ 8 │
│ millisecond │ 9 │
│ microsecond │ 10 │
│ nanosecond │ 11 │
│ sign │ + │
╰─────────────┴────╯
```
Strictly speaking, these changes could break an existing user script.
Losing years and months as time units is arguably a regression in
behavior.
Also, the corrected duration calculation could break an existing script
that was calibrated using the old algorithm.
# Tests + Formatting
```
> toolkit check pr
```
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- 🟢 `toolkit test`
- 🟢 `toolkit test stdlib`
# After Submitting
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---------
Co-authored-by: Bob Hyman <bobhy@localhost.localdomain>
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# Description
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Relative: #8248
After this pr, user can define const variable inside a module.
And user can export const variables, the following screenshot shows how
it works (it follows
https://github.com/nushell/nushell/issues/8248#issuecomment-1637442612):
## About the change
1. To make module support const, we need to change `parse_module_block`
to support `const` keyword.
2. To suport export `const`, we need to make module tracking variables,
so we add `variables` attribute to `Module`
3. During eval, the const variable may not exists in `stack`, because we
don't eval `const` when we define a module, so we need to find variables
which are already registered in `engine_state`
## One more thing to note about the const value.
Consider the following code
```
module foo { const b = 3; export def bar [] { $b } }
use foo bar
const b = 4;
bar
```
The result will be 3 (which is defined in module) rather than 4. I think
it's expected behavior.
It's something like [dynamic
binding](https://www.gnu.org/software/emacs/manual/html_node/elisp/Dynamic-Binding-Tips.html)
vs [lexical
binding](https://www.gnu.org/software/emacs/manual/html_node/elisp/Lexical-Binding.html)
in lisp like language, and lexical binding should be right behavior
which generates more predicable result, and it doesn't introduce really
subtle bugs in nushell code.
What if user want dynamic-binding?(For example: the example code returns
`4`)
There is no way to do this, user should consider passing the value as
argument to custom command rather than const.
## TODO
- [X] adding tests for the feature.
- [X] support export const out of module to use.
# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
# Tests + Formatting
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- `cargo run -- -c "use std testing; testing run-tests --path
crates/nu-std"` to run the tests for the standard library
> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
# After Submitting
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# Description
Previously, we had a bug slip in about implied collection caused by
`$in`, that this output type would be of type `string`.
The type system fixes in 0.83 now make this more visible and cause
issues. This PR changes the output of the implied collection to `any`.
At some point in the future, we may want to carry the type through where
we can, but `any` should unblock using `$in`.
fixes#9825
# User-Facing Changes
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helps us keep track of breaking changes. -->
# Tests + Formatting
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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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> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
# After Submitting
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# Description
This fixes the variable capture logic for closures in two cases:
* Closures inside of closures did not properly register the closures (or
lack thereof) in the outer closure
* Closures which called their inner closures before definition did not
properly calculate the closures of the outer closure
Example of the first case:
```
do { let b = 3; def c [] { $b }; c }
```
Example of the second case (notice `c` is called before it is defined):
```
do { let b = 3; c; def c [] { $b }; c }
```
# User-Facing Changes
This should strictly allow closures to work more correctly.
# Tests + Formatting
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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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> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
# After Submitting
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# Description
Fixes: #8517Fixes: #9246Fixes: #9709
Relative: #9723
## About the change
Before the pr, nushell only parse redirection target as a string(through
`parse_string` call).
In the pr, I'm trying to make the value more generic(using `parse_value`
with `SyntaxShape::Any`)
And during eval stage, we guard it to only eval `String`,
`StringInterpolation`, `FullCellPath`, `FilePath`, so other type of
redirection target like `1ms` won't be permitted.
# User-Facing Changes
After the pr: redirection support something like the following:
1. `let a = "x"; cat toolkit.nu o> $a`
2. `let a = "x"; cat toolkit.nu o> $"($a).txt"`
3. `cat toolkit.nu out> ("~/a.txt" | path expand)`
## description
this pr adds [match
guards](https://doc.rust-lang.org/reference/expressions/match-expr.html#match-guards)
to match patterns
```nushell
match $x {
_ if $x starts-with 'nu' => {},
$x => {}
}
```
these work pretty much like rust's match guards, with few limitations:
1. multiple matches using the `|` are not (yet?) supported
```nushell
match $num {
0 | _ if (is-odd $num) => {},
_ => {}
}
```
2. blocks cannot be used as guards, (yet?)
```nushell
match $num {
$x if { $x ** $x == inf } => {},
_ => {}
}
```
## checklist
- [x] syntax
- [x] syntax highlighting[^1]
- [x] semantics
- [x] tests
- [x] clean up
[^1]: defered for another pr
# Description
This adds input/output types to custom commands. These are input/output
pairs that related an input type to an output type.
For example (a single int-to-int input/output pair):
```
def foo []: int -> int { ... }
```
You can also have multiple input/output pairs:
```
def bar []: [int -> string, string -> list<string>] { ... }
```
These types are checked during definition time in the parser. If the
block does not match the type, the user will get a parser error.
This `:` to begin the input/output signatures should immediately follow
the argument signature as shown above.
The PR also improves type parsing by re-using the shape parser. The
shape parser is now the canonical way to parse types/shapes in user
code.
This PR also splits `extern` into `extern`/`extern-wrapped` because of
the parser limitation that a multi-span argument (which Signature now
is) can't precede an optional argument. `extern-wrapped` now takes the
required block that was previously optional.
# User-Facing Changes
The change to `extern` to split into `extern` and `extern-wrapped` is a
breaking change.
# Tests + Formatting
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automatically
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> ```
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# After Submitting
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# Description
This PR tights input/output type-checking a bit more. There are a lot of
commands that don't have correct input/output types, so part of the
effort is updating them.
This PR now contains updates to commands that had wrong input/output
signatures. It doesn't add examples for these new signatures, but that
can be follow-up work.
# User-Facing Changes
BREAKING CHANGE BREAKING CHANGE
This work enforces many more checks on pipeline type correctness than
previous nushell versions. This strictness may uncover incompatibilities
in existing scripts or shortcomings in the type information for internal
commands.
# 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 -- -c "use std testing; testing run-tests --path
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
> ```
-->
# After Submitting
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# Description
This PR removes the compile-time overload system. Unfortunately, this
system never worked correctly because in a gradual type system where
types can be `Any`, you don't have enough information to correctly
resolve function calls with overloads. These resolutions must be done at
runtime, if they're supported.
That said, there's a bit of work that needs to go into resolving
input/output types (here overloads do not execute separate commands, but
the same command and each overload explains how each output type
corresponds to input types).
This PR also removes the type scope, which would give incorrect answers
in cases where multiple subexpressions were used in a pipeline.
# User-Facing Changes
Finishes removing compile-time overloads. These were only used in a few
places in the code base, but it's possible it may impact user code. I'll
mark this as breaking change so we can review.
# Tests + Formatting
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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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> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
# After Submitting
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# Description
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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!' } }
```
# 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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clippy::needless_collect -A clippy::result_large_err` to check that
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
> **Note**
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automatically
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> ```
-->
# After Submitting
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---------
Co-authored-by: WindSoilder <windsoilder@DESKTOP-R8GRJ1D.localdomain>
# 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
# Description
This extends the syntax fix for `let` (#9589) to `mut` as well.
Example: `mut x = "hello world" | str length; print $x`
closes#9634
# User-Facing Changes
`mut` now joins `let` in being able to be assigned from a pipeline
# Tests + Formatting
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