avoids double pass for some methods if extracting from a svn diff
avoids double pass for some methods if extracting from a svn diff

gitlabhq/gitlab-contributors,amitsuroliya/rails-contributors,maclover7/rails-contributors,fxn/rails-contributors,maclover7/rails-contributors,gitlabhq/gitlab-contributors,maclover7/rails-contributors,amitsuroliya/rails-contributors,amitsuroliya/rails-contributors,maclover7/rails-contributors,fxn/rails-contributors,amitsuroliya/rails-contributors,gitlabhq/gitlab-contributors,fxn/rails-contributors,gitlabhq/gitlab-contributors,fxn/rails-contributors