rumdl-action

Version updated for https://github.com/rvben/rumdl to version v0.1.43.

• This action is used across all versions by 3 repositories.

Action Type

This is a Composite action.

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Action Summary

The rumdl GitHub Action is a high-performance Markdown linter and formatter built with Rust, designed to ensure consistent formatting and adherence to best practices in Markdown files. It automates tasks like linting, formatting, and auto-fixing Markdown code, offering fast performance, support for multiple Markdown flavors, and seamless CI/CD integration. Its key capabilities include 71 lint rules, automatic formatting, and high configurability with zero dependencies, making it an efficient tool for developers and teams.

Release notes

Added

• LSP: Add textDocument/rename support for markdown headings — rename a heading and all references to it update automatically
• CLI: Add "fixed" field to JSON output when --fix is active, showing how many issues were auto-fixed
• CLI: --fix now works with batch output formats (JSON, GitLab, SARIF, JUnit) instead of silently skipping fixes (#498)
• SARIF: Add baselineState field to SARIF output for baseline comparison

Fixed

• Fix mode: Respect inline disable comments (<!-- rumdl-disable -->) in --fix mode — previously, disabled rules could still apply fixes
• MD037: Skip HTML blocks when detecting spaces around emphasis markers, preventing false positives on HTML attributes containing * or _
• MD037: Skip inline HTML code elements (e.g., <code>*text*</code>) to prevent false positives on emphasis-like patterns inside HTML tags
• MD042: Skip frontmatter lines to prevent false positives on YAML keys that look like empty links
• MD051: Allow digit-starting custom anchor IDs (e.g., {#1-intro})
• MD076: Detect inconsistent spacing when code blocks are inside list items
• MDX: Improve compatibility by skipping JSX/MDX content in 7 rules

Changed

• MD070: Changed to opt-in rule. Its auto-fix modifies document structure and can cause false positives on documentation files showing code examples. Enable with extend-enable = ["MD070"] (#502)
• CLI: Simplify fix mode output for structured formats
• Upgrade Rust toolchain from 1.91.0 to 1.94.0

Performance

• MD053: Optimize link definition matching with binary search and forward-tracking

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