rumdl

name	rumdl
description	Use this skill when the user wants to lint, format, or check Markdown files for style violations.

rumdl Plugin

Fast Markdown linter and formatter written in Rust. rumdl checks Markdown files against 50+ style rules, supports auto-fixing, and outputs in multiple formats for CI/CD integration.

Commands

Lint & Format

• rumdl markdown check — Lint Markdown files for style violations
• rumdl markdown format — Format Markdown files in-place
• rumdl config init — Create a default configuration file
• rumdl rule show — Show information about linting rules
• rumdl config show — Show loaded configuration
• rumdl self version — Print rumdl version
• rumdl _ _ — Passthrough to rumdl CLI

Usage Examples

• "Lint all Markdown files in the current directory"
• "Format README.md"
• "Check docs/ for markdown style issues"
• "Show me rule MD013 details"
• "Auto-fix markdown violations in the docs folder"

Installation

cargo install rumdl

Examples

# Lint all Markdown files
rumdl markdown check .

# Lint with JSON output for CI integration
rumdl markdown check --output-format json .

# Format a specific file
rumdl markdown format README.md

# Auto-fix violations in the docs directory
rumdl markdown check --fix docs/

# Preview fixes without modifying files
rumdl markdown check --diff README.md

# Disable specific rules
rumdl markdown check --disable MD013,MD033 README.md

# Create a default config file
rumdl config init

# Show all available rules
rumdl rule show

# Show details for a specific rule
rumdl rule show MD013

# Show configuration as JSON
rumdl config show --output json

Key Features

• High-performance Rust implementation
• 50+ built-in linting rules
• Auto-fix support for many violations
• JSON and JSON-lines output for CI/CD
• markdownlint compatibility with import command
• stdin/stdout support for piping
• pyproject.toml integration
• Pre-commit hook support