# File lib/git-review/provider/github.rb, line 90
      def commit_discussion(number)
        pull_commits = client.pull_commits(source_repo, number)
        repo = client.pull_request(source_repo, number).head.repo.full_name
        discussion = ["Commits on pull request:\n\n"]
        discussion += pull_commits.collect { |commit|
          # commit message
          name = commit.committer.login
          output = "\e[35m#{name}\e[m "
          output << "committed \e[36m#{commit.sha[0..6]}\e[m "
          output << "on #{commit.commit.committer.date.review_time}"
          output << ":\n#{''.rjust(output.length + 1, "-")}\n"
          output << "#{commit.commit.message}"
          output << "\n\n"
          result = [output]

          # comments on commit
          comments = client.commit_comments(repo, commit.sha)
          result + comments.collect { |comment|
            name = comment.user.login
            output = "\e[35m#{name}\e[m "
            output << "added a comment to \e[36m#{commit.sha[0..6]}\e[m"
            output << " on #{comment.created_at.review_time}"
            unless comment.created_at == comment.updated_at
              output << " (updated on #{comment.updated_at.review_time})"
            end
            output << ":\n#{''.rjust(output.length + 1, "-")}\n"
            output << comment.body
            output << "\n\n"
          }
        }
        discussion.compact.flatten unless discussion.empty?
      end