# Recursive directory comparison

Source: crates.io `diffutils` 0.6.0, https://github.com/uutils/diffutils.
The vendor copy retains the upstream licenses.

The public library exposes comparison functions but not the diff CLI entry point.
The vendor copy retains that CLI parser and dispatcher.

- `src/params.rs` accepts `-r` and `--recursive`.
- `src/diff.rs` recursively compares directory entries in lexical order.
- The recursive path reuses the upstream file comparison implementation.
- `tools.txt` exposes the component as `diff` and `cmp`.

`search-test.nu` compares identical directories and changed nested files against GNU diff.