Hi Two quick design points, before I forget about them: 1. currently 'morph build' doesn't remove the temporary build branches on failure or cancellation. I'm a chronic Ctrl+C user and it would make me unhappy to think that every time I do so it clutters up the git repo with refs that won't be deleted until the next time we run an auto-cleanup. I propose adding an exception handler to always delete the temporary branches. 2. since it might be useful to see them, I also propose a --keep option to Morph which skips the exception handler. I think this would be useful for 'morph merge' as well. This would then require the user to clean up manually, which I don't see as a big problem. Any thoughts? I doubt there will be time to implement it this week in any case. Sam