in app/lib/GitChanges.scala [17:20]
def affects(pullRequest: PullRequest, interestingPaths: Set[String])(implicit revWalk: RevWalk): Set[String] = for {
tipCommit <- pullRequest.availableTipCommits
affectedPath <- affectedFolders(pullRequest.base.asRevCommit, tipCommit, interestingPaths)
} yield affectedPath