add emit flag documentation
@@ -211,6 +211,23 @@ See [Configurations.md](Configurations.md) for details.
(Substitute `x86_64` by `i686` and `gnu` by `msvc` depending on which version of rustc was used to install rustfmt).
+* You can change the way rustfmt emits the changes with the --emit flag:
+
+ Example:
+
+ ```
+ cargo fmt --emit files
+ ```
+
+ Options:
+
+ | Flag |Description| Nightly Only |
+ |:---:|:---:|:---:|
+ | files | overwrites output to files | No |
+ | stdout | writes output to stdout | No |
+ | coverage | displays how much of the input file was processed | Yes |
+ | checkstyle | emits in a checkstyle format | Yes |
+
## License
Rustfmt is distributed under the terms of both the MIT license and the
