for node in c.changeset.changed:

                filenode_old = c.changeset_parent.get_node(node.path)

                if filenode_old.is_binary or node.is_binary:

                    diff = _('binary file')

                else:

                    f_gitdiff = diffs.get_gitdiff(filenode_old, node,

                                           ignore_whitespace=ignore_whitespace,

                                           context=line_context)

                    diff = diffs.DiffProcessor(f_gitdiff,

                                                format='gitdiff').raw_diff()

                cs1 = filenode_old.changeset.raw_id

                cs2 = node.changeset.raw_id

                c.changes.append(('changed', node, diff, cs1, cs2))

        response.content_type = 'text/plain'

        if method == 'download':

            response.content_disposition = 'attachment; filename=%s.patch' \

                                            % revision

        c.parent_tmpl = ''.join(['# Parent  %s\n' % x.raw_id

                                 for x in c.changeset.parents])

        c.diffs = ''

        for x in c.changes:

            c.diffs += x[2]

        return render('changeset/raw_changeset.html')

    @jsonify

    def comment(self, repo_name, revision):

        comm = ChangesetCommentsModel().create(

            text=request.POST.get('text'),

            repo_id=c.rhodecode_db_repo.repo_id,

            user_id=c.rhodecode_user.user_id,

            revision=revision,

            f_path=request.POST.get('f_path'),

            line_no=request.POST.get('line')

        )

        Session.commit()

        data = {

           'target_id': h.safeid(h.safe_unicode(request.POST.get('f_path'))),

        }

        if comm:

            c.co = comm

            data.update(comm.get_dict())

        return data

    @jsonify

    def delete_comment(self, repo_name, comment_id):

        co = ChangesetComment.get(comment_id)

        owner = lambda: co.author.user_id == c.rhodecode_user.user_id

        if h.HasPermissionAny('hg.admin', 'repository.admin')() or owner:

            ChangesetCommentsModel().delete(comment=co)

            Session.commit()

            return True

        else:

            raise HTTPForbidden()

<%namespace name="comment" file="/changeset/changeset_file_comment.html"/>