rumdl-action

Version updated for https://github.com/rvben/rumdl to version v0.0.222.

• This action is used across all versions by 14 repositories.

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Action Summary

The rumdl GitHub Action is a high-performance Markdown linter and formatter built with Rust to ensure consistency and best practices in Markdown files. It automates tasks such as identifying and fixing formatting issues, enforcing linting rules, and validating multiple Markdown flavors. Designed for speed and ease of integration into CI/CD pipelines, it provides configurable linting, automatic fixes, detailed error reporting, and supports various installation methods without dependencies.

Release notes

Fixed

• MD018: Comprehensive false positive fixes (#314)

  • Skip content inside HTML comments (e.g., Jupyter cell markers #%%)
  • Skip indented patterns to match markdownlint behavior
  • Skip YAML comments inside frontmatter
  • Flag all malformed headings at line start

• Tables inside list items (#314)

  • Tables embedded in list items are now detected, linted, and formatted correctly
  • Validate delimiter indentation for list-table detection

• MD009: Correct 1-indexed column in ASCII path

  • Column numbers in diagnostics now match editor positions

• Schema: Include all flavor aliases (#312)

  • Added gfm, github, commonmark, qmd, rmd, rmarkdown to schema
  • JSON schema now matches documentation

• CLI: Prevent duplicate config and use canonical rule list

  • Fixes edge case where config could be loaded multiple times

Performance

• Optimize code detection and cache hash computation

  • Faster detection of code blocks and spans

• Cache per-file globsets

  • Significant speedup for rules using file-specific patterns

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

• rvben
• GitHub Actions