# Ascii Check Processor
## Purpose
Validates that files contain only ASCII characters.
## How It Works
Discovers `.md` files in the project and checks each for non-ASCII characters.
Files containing non-ASCII bytes fail the check. This is a built-in processor
that does not require any external tools.
This processor supports batch mode, allowing multiple files to be checked in a
single invocation.
## Source Files
- Input: `**/*.md`
- Output: none (checker)
## Configuration
```toml
[processor.ascii]
args = [] # Additional arguments (unused, for consistency)
dep_inputs = [] # Additional files that trigger rebuilds when changed
```
| `args` | string[] | `[]` | Extra arguments (reserved for future use) |
| `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).