# File lib/churn/scm/source_control.rb, line 59
    def get_updated_files_from_log(revision, revisions)
      current_index = revisions.index(revision)
      previous_index = current_index+1
      previous_revision = revisions[previous_index] unless revisions.length < previous_index
      if revision && previous_revision
        get_diff(revision, previous_revision)
      else
        []
      end
    end