I'm kick-starting the development effort to reimplement Phoenix on top of Proto. There's already been some discussion off-list among the interested parties, but there was general agreement to move the discussion here to do our work out in the open and possibly involve more people. To that end, I have ... ... created a Wiki page for coordinating our efforts: https://svn.boost.org/trac/boost/wiki/BoostPhoenix3 ... created a branch at branches/phoenix_v3. Anybody interested in helping out or just following along should do the following from BOOST_ROOT (trunk): cd boost svn co https://svn.boost.org/svn/boost/branches/phoenix_v3/boost/phoenix cd ../libs svn co https://svn.boost.org/svn/boost/branches/phoenix_v3/libs/phoenix There is nothing in boost/phoenix right now but stub headers, and libs/phoenix is simply copied from trunk/libs/spirit/phoenix. On the Wiki I put uploaded a miniphoenix.cpp file that demonstrates some ideas I have about what Phoenix-on-Proto might look like. Feedback is welcome. -- Eric Niebler BoostPro Computing http://www.boostpro.com