Run scalastyle on modified files only

[jacobilsoe]

Have you thought of making scalastyle run only on files modified since last scalastyle run? A timestamp comparison of the source files and (if it exists) the scalastyle-output.xml file could be a way to do it.

[matthewfarwell]

Do you have a particular problem with the speed, or is it more that you want to know the diff?

[jacobilsoe]

No, I don't have a any issues with speed, yet. :-) But I do expect that as the project grows, the time spent running scalastyle will be noticable. And to have an efficient incremental build it would be good practice to only run scalastyle on modified files.