autocorrect --format touches files which it doesn't actually modify

[petterikamppuririchie]

New Issue Checklist

• Updated SwiftLint to the latest version
• I searched for existing GitHub issues

swiftlint autocorrect --format --path <mydir>

This command touches all files it sees, even when this doesn't result in any changes to the files. Without --format swiftlint doesn't touch files it doesn't change.

This is bad when the command is run as part of Xcode build. Xcode thinks the file has changed externally (which it hasn't), and I get into conflicts (Xcode asks whether to reload file or keep Xcode version, which is annoying).

Also, I haven't found documentation for --format.

So, am I doing it wrong or could --format be fixed so it doesn't touch files that don't need any modifications? Thanks!