# toml-patch

A command-line tool to apply updates from a JSON file to a TOML file,
while preserving comments in the latter (thanks to [toml_edit]).

```
$ toml-patch <(echo '# test\na=true') <(echo '{"x": {"y": 42}}')
# test
a=true

[x]
y = 42
```

Note that the JSON document must be a JSON object and that `null` values
will result in existing key/value pairs being removed.

By default the updated TOML document is printed to stdout, you can pass `--write` to instead overwrite the specified TOML file.

## Limitations

* No partial updates for arrays.
* No support for setting any of TOMLs date/time types.


[toml_edit]: https://crates.io/crates/toml_edit