astral-sh/ruff

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

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#17890 opened on May 6, 2025

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 (9 comments) (1 reaction) (0 assignees)Rust (47,527 stars) (2,088 forks)batch import
bugconfigurationhelp wanted

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

Tech stack
pythonrust
Domain
developer experiencetooling
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
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.
needs maintainer response
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic knowledge of JSON schemaUnderstanding of ruff rule selectors
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
85
Research direction
Check the ruff.schema.json file in the repository for the list of valid select rules. Confirm from the issue comments that 'R' is a valid prefix at runtime. If confirmed, add 'R' to the appropriate array in the schema file. Also consider updating the SchemaStore schema if needed.