rumdl-action

Version updated for https://github.com/rvben/rumdl to version v0.0.220.

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

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Action Summary

The GitHub Action “rumdl” is a high-performance linter and formatter for Markdown files, built with Rust for speed and efficiency. It automates the detection and correction of common Markdown issues, ensuring consistent formatting and adherence to best practices. Key features include 57 linting rules, automatic formatting with fix options, detailed error reporting, and compatibility with CI/CD workflows.

Release notes

Added

• RUMDL_OUTPUT_FORMAT environment variable (#297)
  • Override output format in CI/CD without modifying config files
  • Precedence: CLI flag → env var → config → default
  • Example: RUMDL_OUTPUT_FORMAT=github rumdl check .

Fixed

• MD050: Skip math blocks to avoid false positives in Quarto
  • LaTeX subscripts (x_1) and exponentiation (a**b) were incorrectly flagged as strong emphasis
  • Now correctly skips content inside $$...$$ math blocks

Changed

• Documentation: Clarify CommonMark 0.31.2 spec version (#298)
  • Explicitly document that rumdl uses CommonMark 0.31.2 via pulldown-cmark
  • Clarify that standard flavor includes GFM extensions (tables, task lists, strikethrough, autolinks)
  • Document commonmark as alias for standard, github as alias for gfm
  • Add output-format setting documentation with all 12 available formats

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