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Fixes#6611
## Summary
This lint rule spots comments that are _intended_ to suppress or enable
the formatter, but will be ignored by the Ruff formatter.
We borrow some functions the formatter uses for determining comment
placement / putting them in context within an AST.
The analysis function uses an AST visitor to visit each comment and
attach it to the AST. It then uses that context to check:
1. Is this comment in an expression?
2. Does this comment have bad placement? (e.g. a `# fmt: skip` above a
function instead of at the end of a line)
3. Is this comment redundant?
4. Does this comment actually suppress any code?
5. Does this comment have ambiguous placement? (e.g. a `# fmt: off`
above an `else:` block)
If any of these are true, a violation is thrown. The reported reason
depends on the order of the above check-list: in other words, a `# fmt:
skip` comment on its own line within a list expression will be reported
as being in an expression, since that reason takes priority.
The lint suggests removing the comment as an unsafe fix, regardless of
the reason.
## Test Plan
A snapshot test has been created.
## Summary
Adapts the fix for rule B006 to no longer modify the body of function
stubs, while retaining the change in method signature.
## Test Plan
The existing tests for B006 were adapted to reflect this change in
behavior.
## Relevant issue
https://github.com/astral-sh/ruff/issues/10083
## Summary
The `lxml` library has been modified to address known vulnerabilities
and unsafe defaults. As such, the `defusedxml`
library is no longer necessary, `defusedxml` has deprecated its `lxml`
module.
Closes https://github.com/astral-sh/ruff/issues/10030.
## Summary
This is a not-unpopular directory name, and it's led to tons of issues
and user confusion (most recently:
https://github.com/astral-sh/ruff-pre-commit/issues/69). I've wanted to
remove it for a long time, but we need to do so as part of a minor
release.
## Summary
Currently, rule `RUF015` is not able to detect the usage of
`list(iterable).pop(0)` falling under the category of an _unnecessary
iterable allocation for accessing the first element_. This PR wants to
change that. See the underlying issue for more details.
* Provide extension to detect `list(iterable).pop(0)`, but not
`list(iterable).pop(i)` where i > 1
* Update corresponding doc
## Test Plan
* `RUF015.py` and the corresponding snap file were extended such that
their correspond to the new behaviour
Closes https://github.com/astral-sh/ruff/issues/9190
---
PS: I've only been working on this ticket as I haven't seen any activity
from issue assignee @rmad17, neither in this repo nor in a fork. I hope
I interpreted his inactivity correctly. Didn't mean to steal his chance.
Since I stumbled across the underlying problem myself, I wanted to offer
a solution as soon as possible.
## Summary
It is a convention to use the `_()` alias for `gettext()`. We want to
avoid
statement expressions and assignments related to aliases of the gettext
API.
See https://docs.python.org/3/library/gettext.html for details. When one
uses `_() to mark a string for translation, the tools look for these
markers
and replace the original string with its translated counterpart. If the
string contains variable placeholders or formatting, it can complicate
the
translation process, lead to errors or incorrect translations.
## Test Plan
* Test file `RUF027_1.py` was extended such that the test reproduces the
false-positive
Closes https://github.com/astral-sh/ruff/issues/10023.
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
The original implementation of this applied the runtime-required context
to definitions _within_ the function, but not the signature itself. (We
had test coverage; the snapshot was just correctly showing the wrong
outcome.)
Closes https://github.com/astral-sh/ruff/issues/10089.
## Summary
Update PLR1714 to ignore `sys.platform` and `sys.version` checks.
I'm not sure if these checks or if we need to add more. Please advise.
Fixes#10017
## Test Plan
Added a new test case and ran `cargo nextest run`
## Summary
Allows, e.g.:
```python
import os
os.environ["WORLD_SIZE"] = "1"
os.putenv("CUDA_VISIBLE_DEVICES", "4")
import torch
```
For now, this is only allowed in preview.
Closes https://github.com/astral-sh/ruff/issues/10059
## Summary
Closes#10031
- Detect commented out `case` statements. Playground repro:
https://play.ruff.rs/5a305aa9-6e5c-4fa4-999a-8fc427ab9a23
- Add more support for one-line commented out code.
## Test Plan
Unit tested and tested with
```sh
cargo run -p ruff -- check crates/ruff_linter/resources/test/fixtures/eradicate/ERA001.py --no-cache --preview --select ERA001
```
TODO:
- [x] `cargo insta test`
## Summary
Part of #7595
This PR moves the `RUF001` and `RUF002` rules to the AST checker. This
removes the use of docstring detection from these rules.
## Test Plan
As this is just a refactor, make sure existing test cases pass.
## Summary
Fixes#9895
The cause for this panic came from an offset error in the code. When
analyzing a hypothetical f-string, we attempt to re-parse it as an
f-string, and use the AST data to determine, among other things, whether
the format specifiers are correct. To determine the 'correctness' of a
format specifier, we actually have to re-parse the format specifier, and
this is where the issue lies. To get the source text for the specifier,
we were taking a slice from the original file source text... even though
the AST data for the specifier belongs to the standalone parsed f-string
expression, meaning that the ranges are going to be way off. In a file
with Unicode, this can cause panics if the slice is inside a char
boundary.
To fix this, we now slice from the temporary source we created earlier
to parse the literal as an f-string.
## Test Plan
The RUF027 snapshot test was amended to include a string with format
specifiers which we _should_ be calling out. This is to ensure we do
slice format specifiers from the source text correctly.
## Summary
_This is preview only feature and is available using the `--preview`
command-line flag._
With the implementation of [PEP 701] in Python 3.12, f-strings can now
be broken into multiple lines, can contain comments, and can re-use the
same quote character. Currently, no other Python formatter formats the
f-strings so there's some discussion which needs to happen in defining
the style used for f-string formatting. Relevant discussion:
https://github.com/astral-sh/ruff/discussions/9785
The goal for this PR is to add minimal support for f-string formatting.
This would be to format expression within the replacement field without
introducing any major style changes.
### Newlines
The heuristics for adding newline is similar to that of
[Prettier](https://prettier.io/docs/en/next/rationale.html#template-literals)
where the formatter would only split an expression in the replacement
field across multiple lines if there was already a line break within the
replacement field.
In other words, the formatter would not add any newlines unless they
were already present i.e., they were added by the user. This makes
breaking any expression inside an f-string optional and in control of
the user. For example,
```python
# We wouldn't break this
aaaaaaaaaaa = f"asaaaaaaaaaaaaaaaa { aaaaaaaaaaaa + bbbbbbbbbbbb + ccccccccccccccc } cccccccccc"
# But, we would break the following as there's already a newline
aaaaaaaaaaa = f"asaaaaaaaaaaaaaaaa {
aaaaaaaaaaaa + bbbbbbbbbbbb + ccccccccccccccc } cccccccccc"
```
If there are comments in any of the replacement field of the f-string,
then it will always be a multi-line f-string in which case the formatter
would prefer to break expressions i.e., introduce newlines. For example,
```python
x = f"{ # comment
a }"
```
### Quotes
The logic for formatting quotes remains unchanged. The existing logic is
used to determine the necessary quote char and is used accordingly.
Now, if the expression inside an f-string is itself a string like, then
we need to make sure to preserve the existing quote and not change it to
the preferred quote unless it's 3.12. For example,
```python
f"outer {'inner'} outer"
# For pre 3.12, preserve the single quote
f"outer {'inner'} outer"
# While for 3.12 and later, the quotes can be changed
f"outer {"inner"} outer"
```
But, for triple-quoted strings, we can re-use the same quote char unless
the inner string is itself a triple-quoted string.
```python
f"""outer {"inner"} outer""" # valid
f"""outer {'''inner'''} outer""" # preserve the single quote char for the inner string
```
### Debug expressions
If debug expressions are present in the replacement field of a f-string,
then the whitespace needs to be preserved as they will be rendered as it
is (for example, `f"{ x = }"`. If there are any nested f-strings, then
the whitespace in them needs to be preserved as well which means that
we'll stop formatting the f-string as soon as we encounter a debug
expression.
```python
f"outer { x = !s :.3f}"
# ^^
# We can remove these whitespaces
```
Now, the whitespace doesn't need to be preserved around conversion spec
and format specifiers, so we'll format them as usual but we won't be
formatting any nested f-string within the format specifier.
### Miscellaneous
- The
[`hug_parens_with_braces_and_square_brackets`](https://github.com/astral-sh/ruff/issues/8279)
preview style isn't implemented w.r.t. the f-string curly braces.
- The
[indentation](https://github.com/astral-sh/ruff/discussions/9785#discussioncomment-8470590)
is always relative to the f-string containing statement
## Test Plan
* Add new test cases
* Review existing snapshot changes
* Review the ecosystem changes
[PEP 701]: https://peps.python.org/pep-0701/
## Summary
Ignore `async for` loops when checking the SIM113 rule.
Closes#9995
## Test Plan
A new test case was added to SIM113.py with an async for loop.
## Summary
This PR is a small refactor to extract out the logic for normalizing
string in the formatter from the `StringPart` struct. It also separates
the quote selection into a separate method on the new
`StringNormalizer`. Both of these will help in the f-string formatting
to use `StringPart` and `choose_quotes` irrespective of normalization.
The reason for having separate quote selection and normalization step is
so that the f-string formatting can perform quote selection on its own.
Unlike string and byte literals, the f-string formatting would require
that the normalization happens only for the literal elements of it i.e.,
the "foo" and "bar" in `f"foo {x + y} bar"`. This will automatically be
handled by the already separate `normalize_string` function.
Another use-case in the f-string formatting is to extract out the
relevant information from the `StringPart` like quotes and prefix which
is to be passed as context while formatting each element of an f-string.
## Test Plan
Ensure that clippy is happy and all tests pass.
## Summary
This PR introduces a new semantic model flag `DOCSTRING` which suggests
that the model is currently in a module / class / function docstring.
This is the first step in eliminating the docstring detection state
machine which is prone to bugs as stated in #7595.
## Test Plan
~TODO: Is there a way to add a test case for this?~
I tested this using the following code snippet and adding a print
statement in the `string_like` analyzer to print if we're currently in a
docstring or not.
<details><summary>Test code snippet:</summary>
<p>
```python
"Docstring" ", still a docstring"
"Not a docstring"
def foo():
"Docstring"
"Not a docstring"
if foo:
"Not a docstring"
pass
class Foo:
"Docstring"
"Not a docstring"
foo: int
"Unofficial variable docstring"
def method():
"Docstring"
"Not a docstring"
pass
def bar():
"Not a docstring".strip()
def baz():
_something_else = 1
"""Not a docstring"""
```
</p>
</details>
## Summary
Implement [implicit readlines
(FURB129)](https://github.com/dosisod/refurb/blob/master/refurb/checks/iterable/implicit_readlines.py)
lint.
## Notes
I need a help/an opinion about suggested implementations.
This implementation differs from the original one from `refurb` in the
following way. This implementation checks syntactically the call of the
method with the name `readlines()` inside `for` {loop|generator
expression}. The implementation from refurb also
[checks](https://github.com/dosisod/refurb/blob/master/refurb/checks/iterable/implicit_readlines.py#L43)
that callee is a variable with a type `io.TextIOWrapper` or
`io.BufferedReader`.
- I do not see a simple way to implement the same logic.
- The best I can have is something like
```rust
checker.semantic().binding(checker.semantic().resolve_name(attr_expr.value.as_name_expr()?)?).statement(checker.semantic())
```
and analyze cases. But this will be not about types, but about guessing
the type by assignment (or with) expression.
- Also this logic has several false negatives, when the callee is not a
variable, but the result of function call (e.g. `open(...)`).
- On the other side, maybe it is good to lint this on other things,
where this suggestion is not safe, and push the developers to change
their interfaces to be less surprising, comparing with the standard
library.
- Anyway while the current implementation has false-positives (I
mentioned some of them in the test) I marked the fixes to be unsafe.
## Summary
Accept 0.0 and 1.0 as common magic values. This is in line with the
pylint behaviour, and I think makes sense conceptually.
## Test Plan
Test cases were added to
`crates/ruff_linter/resources/test/fixtures/pylint/magic_value_comparison.py`
## Summary
I was surprised to learn that we treat `x` in `[_ for x in y]` as an
"assignment" binding kind, rather than a dedicated comprehension
variable.
The docs previously mentioned an irrelevant config option, but were
missing a link to the relevant `ignore-init-module-imports` config
option which _is_ actually used.
Additionally, this commit adds a link to the documentation to explain
the conventions around a module interface which includes using a
redundant import alias to preserve an unused import.
(noticed this while filing #9962)
## Summary
This PR renames the semantic model flag `MODULE_DOCSTRING` to
`MODULE_DOCSTRING_BOUNDARY`. The main reason is for readability and for
the new semantic model flag `DOCSTRING` which tracks that the model is
in a module / class / function docstring.
I got confused earlier with the name until I looked at the use case and
it seems that the `_BOUNDARY` prefix is more appropriate for the
use-case and is consistent with other flags.
## Summary
This PR fixes the `DebugText` implementation to use the expression range
instead of the parenthesized range.
Taking the following code snippet as an example:
```python
x = 1
print(f"{ ( x ) = }")
```
The output of running it would be:
```
( x ) = 1
```
Notice that the whitespace between the parentheses and the expression is
preserved as is.
Currently, we don't preserve this information in the AST which defeats
the purpose of `DebugText` as the main purpose of the struct is to
preserve whitespaces _around_ the expression.
This is also problematic when generating the code from the AST node as
then the generator has no information about the parentheses the
whitespaces between them and the expression which would lead to the
removal of the parentheses in the generated code.
I noticed this while working on the f-string formatting where the debug
text would be used to preserve the text surrounding the expression in
the presence of debug expression. The parentheses were being dropped
then which made me realize that the problem is instead in the parser.
## Test Plan
1. Add a test case for the parser
2. Add a test case for the generator
## Summary
This PR ensures that if a list `x` is modified within a `for` loop, we
avoid flagging `list(x)` as unnecessary. Previously, we only detected
calls to exactly `.append`, and they couldn't be nested within other
statements.
Closes https://github.com/astral-sh/ruff/issues/9925.
## Summary
If these are defined within class scopes, they're actually attributes of
the class, and can be accessed through the class itself.
(We preserve our existing behavior for `.pyi` files.)
Closes https://github.com/astral-sh/ruff/issues/9948.
Fixes#8368
Fixes https://github.com/astral-sh/ruff/issues/9186
## Summary
Arbitrary TOML strings can be provided via the command-line to override
configuration options in `pyproject.toml` or `ruff.toml`. As an example:
to run over typeshed and respect typeshed's `pyproject.toml`, but
override a specific isort setting and enable an additional pep8-naming
setting:
```
cargo run -- check ../typeshed --no-cache --config ../typeshed/pyproject.toml --config "lint.isort.combine-as-imports=false" --config "lint.extend-select=['N801']"
```
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
Co-authored-by: Zanie Blue <contact@zanie.dev>
## Summary
Currently these rules apply the heuristic that if the original sequence
doesn't have a newline in between the final sequence item and the
closing parenthesis, the autofix won't add one for you. The feedback
from @ThiefMaster, however, was that this was producing slightly unusual
formatting -- things like this:
```py
__all__ = [
"b", "c",
"a", "d"]
```
were being autofixed to this:
```py
__all__ = [
"a",
"b",
"c",
"d"]
```
When, if it was _going_ to be exploded anyway, they'd prefer something
like this (with the closing parenthesis on its own line, and a trailing comma added):
```py
__all__ = [
"a",
"b",
"c",
"d",
]
```
I'm still pretty skeptical that we'll be able to please everybody here
with the formatting choices we make; _but_, on the other hand, this
_specific_ change is pretty easy to make.
## Test Plan
`cargo test`. I also ran the autofixes for RUF022 and RUF023 on CPython
to check how they looked; they looked fine to me.
## Summary
If a generic appears multiple times on the right-hand side, we should
only include it once on the left-hand side when rewriting.
Closes https://github.com/astral-sh/ruff/issues/9904.
## Summary
This review contains a fix for
[D405](https://docs.astral.sh/ruff/rules/capitalize-section-name/)
(capitalize-section-name)
The problem is that Ruff considers the sub-section header as a normal
section if it has the same name as some section name. For instance, a
function/method has an argument named "parameters". This only applies if
you use Numpy style docstring.
See: [ISSUE](https://github.com/astral-sh/ruff/issues/9806)
The following will not raise D405 after the fix:
```python
def some_function(parameters: list[str]):
"""A function with a parameters parameter
Parameters
----------
parameters:
A list of string parameters
"""
...
```
## Test Plan
```bash
cargo test
```
---------
Co-authored-by: Mikko Leppänen <mikko.leppanen@vaisala.com>
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
This PR reduces the size of `Expr` from 80 to 64 bytes, by reducing the
sizes of...
- `ExprCall` from 72 to 56 bytes, by using boxed slices for `Arguments`.
- `ExprCompare` from 64 to 48 bytes, by using boxed slices for its
various vectors.
In testing, the parser gets a bit faster, and the linter benchmarks
improve quite a bit.
## Summary
Corrects mentions of `Path.is_link` to `Path.is_symlink` (the former
doesn't exist).
## Test Plan
```sh
python scripts/generate_mkdocs.py && mkdocs serve -f mkdocs.public.yml
```
Fixes#9857.
## Summary
Statements like `logging.info("Today it is: {day}")` will no longer be
ignored by RUF027. As before, statements like `"Today it is:
{day}".format(day="Tuesday")` will continue to be ignored.
## Test Plan
The snapshot tests were expanded to include new cases. Additionally, the
snapshot tests have been split in two to separate positive cases from
negative cases.
## Summary
Django's `mark_safe` can also be used as a decorator, so we should
detect usages of `@mark_safe` for the purpose of the relevant Bandit
rule.
Closes https://github.com/astral-sh/ruff/issues/9780.
## Summary
Given:
```python
"""Make a summary line.
Note:
----
Per the code comment the next two lines are blank. "// The first blank line is the line containing the closing
triple quotes, so we need at least two."
"""
```
It turns out we excluded the line ending in `"""`, because it's empty
(unlike for functions, where it consists of the indent). This PR changes
the `following_lines` iterator to always include the trailing newline,
which gives us correct and consistent handling between function and
module-level docstrings.
Closes https://github.com/astral-sh/ruff/issues/9877.
#2977 added the `allow-dict-calls-with-keyword-arguments` configuration
option for the `unnecessary-collection-call (C408)` rule, but it did not
update the rule description.
## Summary
This PR adds the `AnyNode` and `AnyNodeRef` implementation for
`FStringFormatSpec` node which will be required in the f-string
formatting.
The main usage for this is so that we can pass in the node directly to
`suppressed_node` in case debug expression is used to format is as
verbatim text.
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## Summary
`max-positional-args` defaults to `max-args` if it's not specified and
the default to `max-args` is 5, so saying that the default is 3 is
definitely wrong. Ideally, we wouldn't specify a default at all for this
config option, but I don't think that's possible?
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
<!-- How was it tested? -->
Not sure.
## Summary
When we fall through to parsing, the comment-detection rule is a
significant portion of lint time. This PR adds an additional fast
heuristic whereby we abort if a comment contains two consecutive name
tokens (via the zero-allocation lexer). For the `ctypeslib.py`, which
has a few cases that are now caught by this, it's a 2.5x speedup for the
rule (and a 20% speedup for token-based rules).
These are for descriptors which affects the behavior of the object _as a
property_; I do not think they should be called directly but there is no
alternative when working with the object directly.
Closes https://github.com/astral-sh/ruff/issues/9789
## Summary
These run over nearly every identifier. It's rare to override them, so
when not provided, we can just use a match against the hardcoded default
set.
It turns out that for ASCII identifiers, this is nearly 2x faster:
```
Parser/before time: [15.388 ns 15.395 ns 15.406 ns]
Parser/after time: [8.3786 ns 8.5821 ns 8.7715 ns]
```
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## Summary
Fixes#8151
This PR implements a new rule, `RUF027`.
## What it does
Checks for strings that contain f-string syntax but are not f-strings.
### Why is this bad?
An f-string missing an `f` at the beginning won't format anything, and
instead treat the interpolation syntax as literal.
### Example
```python
name = "Sarah"
dayofweek = "Tuesday"
msg = "Hello {name}! It is {dayofweek} today!"
```
It should instead be:
```python
name = "Sarah"
dayofweek = "Tuesday"
msg = f"Hello {name}! It is {dayofweek} today!"
```
## Heuristics
Since there are many possible string literals which contain syntax
similar to f-strings yet are not intended to be,
this lint will disqualify any literal that satisfies any of the
following conditions:
1. The string literal is a standalone expression. For example, a
docstring.
2. The literal is part of a function call with keyword arguments that
match at least one variable (for example: `format("Message: {value}",
value = "Hello World")`)
3. The literal (or a parent expression of the literal) has a direct
method call on it (for example: `"{value}".format(...)`)
4. The string has no `{...}` expression sections, or uses invalid
f-string syntax.
5. The string references variables that are not in scope, or it doesn't
capture variables at all.
6. Any format specifiers in the potential f-string are invalid.
## Test Plan
I created a new test file, `RUF027.py`, which is both an example of what
the lint should catch and a way to test edge cases that may trigger
false positives.
## Summary
It turns out we saw a panic in cases when dedenting blocks like the `def
wrapper` here:
```python
def instrument_url(f: UrlFuncT) -> UrlFuncT:
# TODO: Type this with ParamSpec to preserve the function signature.
if not INSTRUMENTING: # nocoverage -- option is always enabled; should we remove?
return f
else:
def wrapper(
self: "ZulipTestCase", url: str, info: object = {}, **kwargs: Union[bool, str]
) -> HttpResponseBase:
```
Since we relied on the first line to determine the indentation, instead
of the first non-empty line.
## Test Plan
`cargo test`
## Summary
This is a simple idea to avoid unnecessary work in the linter,
especially for rules that run on all name and/or all attribute nodes.
Imagine a rule like the NumPy deprecation check. If the user never
imported `numpy`, we should be able to skip that rule entirely --
whereas today, we do a `resolve_call_path` check on _every_ name in the
file. It turns out that there's basically a finite set of modules that
we care about, so we now track imports on those modules as explicit
flags on the semantic model. In rules that can _only_ ever trigger if
those modules were imported, we add a dedicated and extremely cheap
check to the top of the rule.
We could consider generalizing this to all modules, but I would expect
that not to be much faster than `resolve_call_path`, which is just a
hash map lookup on `TextSize` anyway.
It would also be nice to make this declarative, such that rules could
declare the modules they care about, the analyzers could call the rules
as appropriate. But, I don't think such a design should block merging
this.
## Summary
Often, when fixing, we need to dedent a block of code (e.g., if we
remove an `if` and dedent its body). Today, we use LibCST to parse and
adjust the indentation, which is really expensive -- but this is only
really necessary if the block contains a multiline string, since naively
adjusting the indentation for such a string can change the whitespace
_within_ the string.
This PR uses a simple dedent implementation for cases in which the block
doesn't intersect with a multi-line string (or an f-string, since we
don't support tracking multi-line strings for f-strings right now).
We could improve this even further by using the ranges to guide the
dedent function, such that we don't apply the dedent if the line starts
within a multiline string. But that would also need to take f-strings
into account, which is a little tricky.
## Test Plan
`cargo test`
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## Summary
When I was looking at the v0.2.0 release, this method showed up in a
CodSpeed regression (we were calling it more), so I decided to quickly
look at speeding it up. @BurntSushi suggested using Aho-Corasick, and it
looks like it's about 7 or 8x faster:
```text
Parser/AhoCorasick time: [8.5646 ns 8.5914 ns 8.6191 ns]
Parser/Iterator time: [64.992 ns 65.124 ns 65.271 ns]
```
## Test Plan
`cargo test`
I noticed that the comment doesn't match the behavior:
- zip function is not used anymore
- parameters are not scanned in reverse
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
No need
Signed-off-by: Mikael Arguedas <mikael.arguedas@gmail.com>
## Summary
Adds an additional warning macro (we should consolidate these later)
that shows a warning once based on the content of the warning itself.
This is less efficient than `warn_user_once!` and `warn_user_by_id!`,
but this is so expensive that it doesn't matter at all.
Applies this macro to the various warnings for the v0.2.0 release, and
also includes the filename in said warnings, so the FastAPI case is now:
```text
warning: The top-level linter settings are deprecated in favour of their counterparts in the `lint` section. Please update the following options in /Users/crmarsh/workspace/fastapi/pyproject.toml:
- 'ignore' -> 'lint.ignore'
- 'select' -> 'lint.select'
- 'isort' -> 'lint.isort'
- 'pyupgrade' -> 'lint.pyupgrade'
- 'per-file-ignores' -> 'lint.per-file-ignores'
```
---------
Co-authored-by: Zanie <contact@zanie.dev>
## Summary
This was causing build failures for #9599. We were referencing the
command line overrides instead of the merged configuration data, hence
the issue.
## Test Plan
A snapshot test was added.
Follow-up to #9754 and #9689. Alternative to #9714.
Marks `TRY200` as removed and redirects to `B904` instead of marking as
deprecated and suggesting `B904` instead.
Extends https://github.com/astral-sh/ruff/pull/9752 adding internal test
rules for redirection
Fixes a bug where we did not see warnings for exact codes that are
redirected (just prefixes)
Cherry-picked from https://github.com/astral-sh/ruff/pull/9714 which is
being abandoned for now because we need to invest more into our
redirection infrastructure before it is feasible.
Fixes a bug in the implementation where we improperly included
deprecated rules in `RuleSelector.rules()` when preview is on. Includes
some clean-up of error messages and the implementation.
# Conflicts:
# crates/ruff/tests/integration_test.rs
## Summary
This rule was added to `flake8-type-checking` as `TC010`. We're about to
stabilize it, so we might as well use the correct code.
See: https://github.com/astral-sh/ruff/issues/9573.
## Summary
This PR stabilizes the preview rules from:
- `flake8-trio` (6 rules)
- `flake8-quotes` (1 rule)
- `pyupgrade` (1 rule)
- `flake8-pyi` (1 rule)
- `flake8-simplify` (2 rules)
- `flake8-bandit` (9 rules; 14 remain in preview)
- `flake8-type-checking` (1 rule)
- `numpy` (1 rule)
- `ruff` (4 rules, one elevated from nursery; 6 remain in preview as
they were added within the last 30 days)
- `flake8-logging` (4 rules)
I see these are largely uncontroversial.
Adds a new `Deprecated` rule group in addition to `Stable` and
`Preview`.
Deprecated rules:
- Warn on explicit selection without preview
- Error on explicit selection with preview
- Are excluded when selected by prefix with preview
Deprecates `TRY200`, `ANN101`, and `ANN102` as a proof of concept. We
can consider deprecating them separately.
Extends #9682 to error if the nursery selector is used or nursery rules
are selected without preview.
Part of #7992 — we will remove this in 0.3.0 instead so we can provide
nice errors in 0.2.0.
# Conflicts:
# crates/ruff/tests/integration_test.rs
# crates/ruff_workspace/src/configuration.rs
Fixes#7350
## Summary
* `--show-source` and `--no-show-source` are now deprecated.
* `output-format` supports two new variants, `full` and `concise`.
`text` is now a deprecated variant, and any use of it is treated as the
default serialization format.
* `--output-format` now default to `concise`
* In preview mode, `--output-format` defaults to `full`
* `--show-source` will still set `--output-format` to `full` if the
output format is not otherwise specified.
* likewise, `--no-show-source` can override an output format that was
set in a file-based configuration, though it will also be overridden by
`--output-format`
## Test Plan
A lot of tests were updated to use `--output-format=full`. Additional
tests were added to ensure the correct deprecation warnings appeared,
and that deprecated options behaved as intended.
# Conflicts:
# crates/ruff/tests/integration_test.rs
## Summary
Un-gates the behavior to allow `sys.path` modifications between imports,
which removed a bunch of false positives in the ecosystem CI at the
time.
## Summary
At present, our versioning policy forbids the addition of safe fixes to
stable rules outside of a minor release, so we've accumulated a bunch of
new fixes that are behind `--preview`, and can be ungated in v0.2.0.
To find these, I just grepped for `preview.is_enabled()` and identified
all such cases. I then audited the `preview_rules` test fixtures and
removed any tests that existed only to test this autofix behavior.
# Conflicts:
# crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__SIM114_SIM114.py.snap
# crates/ruff_linter/src/rules/flake8_simplify/snapshots/ruff_linter__rules__flake8_simplify__tests__preview__SIM114_SIM114.py.snap
## Summary
This rule was added to flake8-bugbear. In general, we tend to prefer
redirecting to prominent plugins when our own rules are reimplemented
(since more projects have `B` activated than `RUF`).
## Test Plan
`cargo test`
# Conflicts:
# crates/ruff_linter/src/rules/ruff/rules/mod.rs
Updated implementation of https://github.com/astral-sh/ruff/pull/7369
which was left out in the cold.
This was motivated again following changes in #9691 and #9689 where we
could not test the changes without actually deprecating or removing
rules.
---
Follow-up to discussion in https://github.com/astral-sh/ruff/pull/7210
Moves integration tests from using rules that are transitively in
nursery / preview groups to dedicated test rules that only exist during
development. These rules always raise violations (they do not require
specific file behavior). The rules are not available in production or in
the documentation.
Uses features instead of `cfg(test)` for cross-crate support per
https://github.com/rust-lang/cargo/issues/8379
## Summary
Just like #6537 and #6538 but for the `default` second parameter to
`getenv()`.
Also rename "BAD" to "BAR" in the tests, since those strings shouldn't
trigger the rule.
## Test Plan
Added passing and failing examples to `invalid_envvar_default.py`.
## Summary
This PR implements the `blank_line_after_nested_stub_class` preview
style in the formatter.
The logic is divided into 3 parts:
1. In between preceding and following nodes at top level and nested
suite
2. When there's a trailing comment after the class
3. When there is no following node from (1) which is the case when it's
the last or the only node in a suite
We handle (3) with `FormatLeadingAlternateBranchComments`.
## Test Plan
- Add new test cases and update existing snapshots
- Checked the `typeshed` diff
fixes: #8891
## Summary
This review contains a fix for
[ASYNC101](https://docs.astral.sh/ruff/rules/open-sleep-or-subprocess-in-async-function/)
(open-sleep-or-subprocess-in-async-function)
The problem is that ruff does not take open calls from pathlib.Path into
account in async functions. Path.open() call is still a blocking call.
In addition, PTH123 suggests to use pathlib.Path instead of os.open. So
this might create an additional confusion.
See: https://github.com/astral-sh/ruff/issues/6892
## Test Plan
```bash
cargo test
```
## Summary
Tweaks PLR2004 to show the literal source text, rather than the constant
value.
I noticed this when I had a hexadecimal constant, and the linter turned
it into base-10.
Now, if you have `0x300`, it will show `0x300` instead of `768`.
Also, added backticks around the constant in the output message.
## Test Plan
`cargo test`
## Summary
Given:
```python
from dataclasses import InitVar, dataclass
@dataclass
class C:
i: int
j: int = None
database: InitVar[DatabaseType] = None
def __post_init__(self, database):
if self.j is None and database is not None:
self.j = database.lookup('j')
c = C(10, database=my_database)
```
We should avoid marking `InitVar` as typing-only, since it _is_ required
by the dataclass at runtime.
Note that by default, we _already_ don't flag this, since the
`@dataclass` member is needed at runtime too -- so it's only a problem
with `strict` mode.
Closes https://github.com/astral-sh/ruff/issues/9666.
Changes our warning for combined use of `--preview` and `--select
NURSERY` to a hard error.
This should go out _before_ #9680 where we will ban use of `NURSERY`
outside of preview as well (see #9683).
Part of https://github.com/astral-sh/ruff/issues/7992
## Summary
Per https://github.com/astral-sh/ruff/issues/9570:
> `dtype` are a bit of a strange beast, but definitely best thought of
as instances, not classes, and they are meant to be comparable not just
to their own class, but also to the corresponding scalar types (e.g.,
`x.dtype == np.float32`) and strings (e.g., `x.dtype == ['i1,i4']`;
basically, `__eq__` always tries to do `dtype(other)`.
This PR thus allows comparisons to `dtype` in preview.
Closes https://github.com/astral-sh/ruff/issues/9570.
## Test Plan
`cargo test`
## Summary
This review contains a fix for
[RET504](https://docs.astral.sh/ruff/rules/unnecessary-assign/)
(unnecessary-assign)
The problem is that Ruff suggests combining a return statement inside
contextlib.suppress. Even though it is an unsafe fix it might lead to an
invalid code that is not equivalent to the original one.
See: https://github.com/astral-sh/ruff/issues/5909
## Test Plan
```bash
cargo test
```
## Summary
Given a statement like `colors = 6`, we currently treat the cell as an
automagic (since `colors` is an automagic) -- i.e., we assume it's
equivalent to `%colors = 6`. This PR adds some additional detection
whereby if the statement is an _assignment_, we avoid treating it as
such. I audited the list of automagics, and I believe this is safe for
all of them.
Closes https://github.com/astral-sh/ruff/issues/8526.
Closes https://github.com/astral-sh/ruff/issues/9648.
## Test Plan
`cargo test`
## Summary
This review contains a fix for
[PIE810](https://docs.astral.sh/ruff/rules/multiple-starts-ends-with/)
(multiple-starts-ends-with)
The problem is that ruff suggests combining multiple startswith/endswith
calls into a single call even though there might be a call with tuple of
strs. This leads to calling startswith/endswith with tuple of tuple of
strs which is incorrect and violates startswith/endswith conctract and
results in runtime failure.
However the following will be valid and fixed correctly =>
```python
x = ("hello", "world")
y = "h"
z = "w"
msg = "hello world"
if msg.startswith(x) or msg.startswith(y) or msg.startswith(z) :
sys.exit(1)
```
```
ruff --fix --select PIE810 --unsafe-fixes
```
=>
```python
if msg.startswith(x) or msg.startswith((y,z)):
sys.exit(1)
```
See: https://github.com/astral-sh/ruff/issues/8906
## Test Plan
```bash
cargo test
```
## Summary
This rule was just incorrect, it didn't match the examples in the docs.
(It's a very rarely-used rule since it's not included in any of the
conventions.)
Closes https://github.com/astral-sh/ruff/issues/9452.
## Summary
Add a rule for defaultdict(default_factory=callable). Instead suggest
using defaultdict(callable).
See: https://github.com/astral-sh/ruff/issues/9509
If a user tries to bind a "non-callable" to default_factory, the rule
ignores it. Another option would be to warn that it's probably not what
you want. Because Python allows the following:
```python
from collections import defaultdict
defaultdict(default_factory=1)
```
this raises after you actually try to use it:
```python
dd = defaultdict(default_factory=1)
dd[1]
```
=>
```bash
KeyError: 1
```
Instead using callable directly in the constructor it will raise (not
being a callable):
```python
from collections import defaultdict
defaultdict(1)
```
=>
```bash
TypeError: first argument must be callable or None
```
## Test Plan
```bash
cargo test
```
## Summary
When we are analyzing the implicit return rule this change add an
additional check to verify if the call expression has been annotated
with NoReturn type from typing module.
See: https://github.com/astral-sh/ruff/issues/5474
## Test Plan
```bash
cargo test
```
Previously, without the 'wrap_help' feature enabled, Clap would not do
any auto-wrapping of help text. For help text with long lines, this
tends to lead to non-ideal formatting. It can be especially difficult to
read when the width of the terminal is smaller.
This commit enables 'wrap_help', which will automatically cause Clap to
query the terminal size and wrap according to that. Or, if the terminal
size cannot be determined, it will default to a maximum line width of
100.
Ref https://github.com/astral-sh/ruff/pull/9599#discussion_r1464992692
## Summary
If you paste in the TOML for our default configuration (from the docs),
it's rejected by our JSON Schema:
It seems like the issue is with:
```toml
# Set the line length limit used when formatting code snippets in
# docstrings.
#
# This only has an effect when the `docstring-code-format` setting is
# enabled.
docstring-code-line-length = "dynamic"
```
Specifically, since that value uses a custom Serde implementation, I
guess Schemars bails out? This PR adds a custom representation to allow
`"dynamic"` (but no other strings):
This seems like it should work but I don't have a great way to test it.
Closes https://github.com/astral-sh/ruff/issues/9630.
## Summary
Checks for unnecessary `dict` comprehension when creating a new
dictionary from iterable. Suggest to replace with
`dict.fromkeys(iterable)`
See: https://github.com/astral-sh/ruff/issues/9592
## Test Plan
```bash
cargo test
```
## Summary
This PR introduces a new rule to sort `__slots__` and `__match_args__`
according to a [natural sort](https://en.wikipedia.org/wiki/Natural_sort_order), as was
requested in https://github.com/astral-sh/ruff/issues/1198#issuecomment-1881418365.
The implementation here generalises some of the machinery introduced in
3aae16f1bd
so that different kinds of sorts can be applied to lists of string
literals. (We use an "isort-style" sort for `__all__`, but that isn't
really appropriate for `__slots__` and `__match_args__`, where nearly
all items will be snake_case.) Several sections of code have been moved
from `sort_dunder_all.rs` to a new module, `sorting_helpers.rs`, which
`sort_dunder_all.rs` and `sort_dunder_slots.rs` both make use of.
`__match_args__` is very similar to `__all__`, in that it can only be a
tuple or a list. `__slots__` differs from the other two, however, in
that it can be any iterable of strings. If slots is a dictionary, the
values are used by the builtin `help()` function as per-attribute
docstrings that show up in the output of `help()`. (There's no
particular use-case for making `__slots__` a set, but it's perfectly
legal at runtime, so there's no reason for us not to handle it in this
rule.)
Note that we don't do an autofix for multiline `__slots__` if `__slots__` is a dictionary: that's out of scope. Everything else, we can nearly always fix, however.
## Test Plan
`cargo test` / `cargo insta review`.
I also ran this rule on CPython, and the diff looked pretty good
---
Co-authored-by: Micha Reiser <micha@reiser.io>
## Summary
Implement rule `mutable-fromkeys-value` (`RUF023`).
Autofixes
```python
dict.fromkeys(foo, [])
```
to
```python
{key: [] for key in foo}
```
The fix is marked as unsafe as it changes runtime behaviour. It also
uses `key` as the comprehension variable, which may not always be
desired.
Closes#4613.
## Test Plan
`cargo test`
## Summary
When determining whether _any_ settings have namespace packages, we need
to consider the global settings (as would be provided via `--config`).
This was a subtle fallout of a refactor.
Closes https://github.com/astral-sh/ruff/issues/9579.
## Test Plan
Tested locally by compiling Ruff and running against this
[namespace-test](https://github.com/gokay05/namespace-test) repo.
## Summary
This PR detects whether PLR0917 is being applied to a method or class
method, and if so, it ignores the first argument for the purposes of
counting the number of positional arguments.
## Test Plan
New tests have been added to the corresponding fixture.
Closes#9552.
## Summary
Long ago, we had a single `ruff` crate. We started to break that up, and
at some point, we wanted to separate the CLI from the core library. So
we created `ruff_cli`, which created a `ruff` binary. Later, the `ruff`
crate was renamed to `ruff_linter` and further broken up into additional
crates.
(This is all from memory -- I didn't bother to look through the history
to ensure that this is 100% correct :))
Now that `ruff` no longer exists, this PR renames `ruff_cli` to `ruff`.
The primary benefit is that the binary target and the crate name are now
the same, which helps with downstream tooling like `cargo-dist`, and
also removes some complexity from the crate and `Cargo.toml` itself.
## Test Plan
- Ran `rm -rf target/release`.
- Ran `cargo build --release`.
- Verified that `./target/release/ruff` was created.
## Summary
#5920 with a fix for the erroneous slice in `module_name`. Fixes#9547.
## Test Plan
Added `import bbb.ccc._ddd as eee` to the test fixture to ensure it no
longer panics.
`cargo test`
## Summary
This implements the rule proposed in #1198 (though it doesn't close the
issue, as there are some open questions about configuration that might
merit some further discussion).
## Test Plan
`cargo test` / `cargo insta review`. I also ran this PR branch on the CPython
codebase with `--fix --select=RUF022 --preview `, and the results looked
pretty good to me.
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
Co-authored-by: Andrew Gallant <andrew@astral.sh>
## Summary
add autofix for `deprecated_log_warn` (`PGH002`)
## Test Plan
`cargo test`
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
Right now, if you run with `explicit-preview-rules`, and use something
like `select = ["RUF017"]`, we won't actually enable fixing for that
rule, because `fixable = ["ALL"]` (the default) won't include `RUF017`
due to the `explicit-preview-rules`.
The framing in this PR is that `explicit-preview-rules` should only
affect the enablement selectors, whereas the fixable selectors should
just include all possible matching rules. I think this will lead to the
most intuitive behavior.
Closes https://github.com/astral-sh/ruff/issues/9282. (An alternative to
https://github.com/astral-sh/ruff/pull/9284.)
## Summary
This PR is a more holistic fix for
https://github.com/astral-sh/ruff/issues/9534 and
https://github.com/astral-sh/ruff/issues/9159.
When we visit the AST, we track nodes that we need to visit _later_
(deferred nodes). For example, when visiting a function, we defer the
function body, since we don't want to visit the body until we've visited
the rest of the statements in the containing scope.
However, deferred nodes can themselves contain deferred nodes... For
example, a function body can contain a lambda (which contains a deferred
body). And then there are rarer cases, like a lambda inside of a type
annotation.
The aforementioned issues were fixed by reordering the deferral visits
to catch common cases. But even with those fixes, we still fail on cases
like:
```python
from __future__ import annotations
import re
from typing import cast
cast(lambda: re.match, 1)
```
Since we don't expect lambdas to appear inside of type definitions.
This PR modifies the `Checker` to keep visiting until all the deferred
stacks are empty. We _already_ do this for any one kind of deferred
node; now, we do it for _all_ of them at a level above.
## Summary
This is effectively the same problem as
https://github.com/astral-sh/ruff/pull/9175. And this just papers over
it again, though I'm gonna try a more holistic fix in a follow-up PR.
The _real_ fix here is that we need to continue to visit deferred items
until they're exhausted since, e.g., we still get this case wrong
(flagging `re` as unused):
```python
import re
cast(lambda: re.match, 1)
```
Closes https://github.com/astral-sh/ruff/issues/9534.
## Summary
I found that `cargo benchmark lexer` didn't work as expected:
```shell
❯ cargo benchmark lexer
Finished bench [optimized] target(s) in 0.08s
Running benches/formatter.rs (target/release/deps/formatter-4e1d9bf9d3ba529d)
Running benches/linter.rs (target/release/deps/linter-e449086ddfd8ad8c)
```
Turns out that `cargo bench -p ruff_benchmark` is now recommended over
`cargo benchmark`, so updating the docs to reflect that.
## Summary
Closes#9508 .
Add `__prepare__` method to dunder method list in
`is_known_dunder_method`.
## Test Plan
1. add "__prepare__" method to `Apple` class in
crates/ruff_linter/resources/test/fixtures/pylint/bad_dunder_method_name.py.
2. run `cargo test`
Implements SIM113 from #998
Added tests
Limitations
- No fix yet
- Only flag cases where index variable immediately precede `for` loop
@charliermarsh please review and let me know any improvements
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
In the `logical_lines`'s `expand_indent` , respect the
`LinterSettings::tab_size` setting instead of hardcoding the size of
tabs to 8.
Also see [this
conversation](https://github.com/astral-sh/ruff/pull/9266#discussion_r1447102212)
## Test Plan
Tested by running `cargo test`
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## Summary
Fixes#8334.
`Display` has been implemented for `ruff_workspace::Settings`, which
gives a much nicer and more readable output to `--show-settings`.
Internally, a `display_settings` utility macro has been implemented to
reduce the boilerplate of the display code.
### Work to be done
- [x] A lot of formatting for `Vec<_>` and `HashSet<_>` types have been
stubbed out, using `Debug` as a fallback. There should be a way to add
generic formatting support for these types as a modifier in
`display_settings`.
- [x] Several complex types were also stubbed out and need proper
`Display` implementations rather than falling back on `Debug`.
- [x] An open question needs to be answered: how important is it that
the output be valid TOML? Some types in settings, such as a hash-map
from a glob pattern to a multi-variant enum, will be hard to rework into
valid _and_ readable TOML.
- [x] Tests need to be implemented.
## Test Plan
Tests consist of a snapshot test for the default `--show-settings`
output and a doctest for `display_settings!`.
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## Summary
Fix the message for `__aenter__ ` in PLC2801 (introduced in
https://github.com/astral-sh/ruff/pull/9166)
There is no `aenter` builtin in Python, so the current message is
misleading.
I take the message from original lint
https://github.com/pylint-dev/pylint/blob/main/pylint/constants.py#L211
P.S. I think here should be more accurate synchronization with original
lint (e.g. the current implementation will not lint `__enter__` on my
first sight), but it is out-of-scope of this change.
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
<!-- How was it tested? -->
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
I noticed that there should be a missing period added to some of the new
error messages for Unnecessary dunder call:
```
sandpit\test.py:6:16: PLC2801 Unnecessary dunder call to `__getattribute__`. Access attribute directly or use getattr built-in function..
```
## Test Plan
Static analysis of the implementation, as this has no existing test
cases.
## Summary
We haven't found time to flip this on, so feels like it's best to remove
it for now -- can always restore from source when we get back to it.
## Summary
Closes#9319, implements the [`SIM911` rule from
`flake8-simplify`](https://github.com/MartinThoma/flake8-simplify/pull/183).
#### Note
I wasn't sure whether or not to include
```rs
if checker.settings.preview.is_disabled() {
return;
}
```
at the beginning of the function with violation logic if the rule's
already declared as part of `RuleGroup::Preview`.
I've seen both variants, so I'd appreciate some feedback on that :)
## Summary
This PR attempts to improve `builtin-attribute-shadowing` (`A003`), a
rule which has been repeatedly criticized, but _does_ have value (just
not in the current form).
Historically, this rule would flag cases like:
```python
class Class:
id: int
```
This led to an increasing number of exceptions and special-cases to the
rule over time to try and improve it's specificity (e.g., ignore
`TypedDict`, ignore `@override`).
The crux of the issue is that given the above, referencing `id` will
never resolve to `Class.id`, so the shadowing is actually fine. There's
one exception, however:
```python
class Class:
id: int
def do_thing() -> id:
pass
```
Here, `id` actually resolves to the `id` attribute on the class, not the
`id` builtin.
So this PR completely reworks the rule around this _much_ more targeted
case, which will almost always be a mistake: when you reference a class
member from within the class, and that member shadows a builtin.
Closes https://github.com/astral-sh/ruff/issues/6524.
Closes https://github.com/astral-sh/ruff/issues/7806.
## Summary
Sort of a random PR to make the coupling between `pyproject_config` and
`resolver` more explicit by passing it to the `Resolver`, rather than
threading it through to each individual method.
Saves 2% on Airflow:
```shell
❯ hyperfine --warmup 20 -i "./target/release/main format ../airflow" "./target/release/ruff format ../airflow"
Benchmark 1: ./target/release/main format ../airflow
Time (mean ± σ): 72.7 ms ± 0.4 ms [User: 48.7 ms, System: 75.5 ms]
Range (min … max): 72.0 ms … 73.7 ms 40 runs
Benchmark 2: ./target/release/ruff format ../airflow
Time (mean ± σ): 71.4 ms ± 0.6 ms [User: 46.2 ms, System: 76.2 ms]
Range (min … max): 70.3 ms … 73.8 ms 41 runs
Summary
'./target/release/ruff format ../airflow' ran
1.02 ± 0.01 times faster than './target/release/main format ../airflow'
```
Shaygan Hooshyari
Micha Reiser
Justin Sexton
Jane Lewis
Philipp Thiel
Charlie Marsh
Robin Caloudis
Alex Waygood
Arkin Modi
Seo Sanghyeon
Arjun Munji
Ottavio Hartman
Daniël van Noord
Dhruv Manilawala
Adam Kuhn
Adrien Ball
Asger Hautop Drewsen
Aleksei Latyshev
Auguste Lalande
Hashem
trag1c
Hoël Bagard
Mikko Leppänen
Tom Kuson
Hugo van Kemenade
Jack McIvor
Eero Vaher
Thomas M Kehrenberg
Zanie Blue
Emil Telstad
Mikael Arguedas
Alex Gaynor
Christopher Covington
Steve C
Bartosz Sławecki
Andrew Gallant
Akira Noda
yataka
Chammika Mannakkara
Jane Lewis
KotlinIsland