For the curios, here's what it looks like to deal with this in reposurgeon:
authors read <gcc.map # Deal with the one ambiguous username. (<1>..<14639> & /master/b) | /premerge-fsf-branch/b assign gcc2 <gcc2> authors read <<EOF dje = Doug Evans <d...@gcc.gnu.org> EOF ~<gcc2> authors read <<EOF dje = David Edelsohn <d...@gcc.gnu.org> EOF -- <a href="http://www.catb.org/~esr/">Eric S. Raymond</a>