# Rumdl Processor
## Purpose
Lints Markdown files using [rumdl](https://github.com/veltzer/rumdl).
## How It Works
Discovers `.md` files in the project (excluding common non-source directories),
runs `rumdl check` on each file, and creates a stub file on success.
A non-zero exit code from rumdl fails the product.
This processor supports batch mode, allowing multiple files to be checked in a
single rumdl invocation for better performance.
## Source Files
- Input: `**/*.md`
- Output: `out/rumdl/{flat_name}.rumdl`
## Configuration
```toml
[processor.rumdl]
command = "rumdl" # The rumdl command to run
args = [] # Additional arguments to pass to rumdl
dep_inputs = [] # Additional files that trigger rebuilds when changed
```
| `command` | string | `"rumdl"` | The rumdl executable to run |
| `args` | string[] | `[]` | Extra arguments passed to rumdl |
| `dep_inputs` | string[] | `[]` | Extra files whose changes trigger rebuilds |
## Batch support
The tool accepts multiple files on the command line. When batching is enabled (default), rsconstruct passes all files in a single invocation for better performance.
## Clean behavior
This processor is a Checker — `rsconstruct clean outputs` is a no-op for it (checkers produce no outputs). See [Clean behavior](../processors.md#clean-behavior) and [`rsconstruct clean`](../commands.md#rsconstruct-clean).