astral-sh/ruff

R is valid prefix at runtime but not included in JSON schema

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#17,890 opened on May 6, 2025

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 (10 comments) (1 reaction) (0 assignees)Rust (2,088 forks)batch import
bugconfigurationhelp wanted

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Description

Summary

Problem: ruff check --select R works, so R seems to be a valid rule selector. But neither https://github.com/astral-sh/ruff/blob/main/ruff.schema.json nor https://github.com/SchemaStore/schemastore/edit/master/src/schemas/json/ruff.json include "R" in the list of valid select rules. This leads to pyproject.toml that includes "R" in lint.select items to error in IDEs.

Fix: I didn't open a PR because I don't know whether R is or isn't supposed to be valid.

Workaround: Use the more explicit "RET", which is the only rule set that R enables.

Version

ruff 0.11.8 (75effb8ed 2025-05-01)

Contributor guide

Research direction
Add 'R' as a valid prefix in the enum of select rules in ruff.schema.json. Refer to the existing RET entry for format guidance and ensure it matches the runtime behavior where 'R' selects the same rules as 'RET'.
Tech stack
pythonrust
Domain
toolingdeveloper experience
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JSON schema
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85