rumdl-action

Version updated for https://github.com/rvben/rumdl to version v0.0.221.

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

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Action Summary

rumdl is a high-performance Markdown linter and formatter built with Rust, designed to ensure consistency, enforce best practices, and automate corrections in Markdown files. It addresses common issues with 57 lint rules, offers automatic formatting and intelligent caching for speed, and provides a modern, configurable CLI suitable for use in CI/CD pipelines and editor integrations. The tool is lightweight with zero dependencies and multiple installation options, making it accessible for diverse workflows.

Release notes

Added

• Embedded markdown linting in fenced code blocks
  • Lint markdown content inside ```markdown code blocks
  • Provides lint warnings for markdown examples in documentation
  • Auto-fix support formats embedded markdown preserving code fence indentation

Fixed

• MD064: Remove max-consecutive-spaces config, improve sentence detection

  • Removed conceptually inconsistent max-consecutive-spaces option
  • Share sentence detection logic with text reflow (DRY)
  • Add proper abbreviation detection (Dr., Prof., e.g., i.e., Mr., Mrs.)
  • Add CJK sentence-ending punctuation support (。, ！, ？)
  • Fix UTF-8 byte boundary handling for multi-byte characters

• MD055/MD056: Handle tables inside blockquotes in fix mode

  • Tables within blockquotes now preserve > prefix when fixed
  • Pipe style and column count fixes work correctly in nested contexts

• MD060: Improve alignment detection for CJK and delimiter styles

  • Better handling of CJK character widths in table alignment
  • Improved delimiter row style detection

• MD069: Respect inline disable comments in fix mode

  • <!-- markdownlint-disable MD069 --> now properly prevents fixes
  • Exposed inline config checks for rule disable detection

• MD058/MD065: Recognize blockquote continuation lines as blank

  • Lines with only > are now treated as blank for table separation rules
  • Fixes false positives in blockquoted content

• Text reflow: Recognize sentence boundaries with quotation marks

  • Sentences ending with closing quotes (.\", !\", ?\") now detected correctly
  • Supports both straight and curly quotation marks

Changed

• Refactored sentence detection into shared module
  • New sentence_utils module provides reusable sentence boundary detection
  • Used by both MD064 (consecutive spaces) and text reflow (MD013)
  • Reduces code duplication by ~100 lines

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.

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