> if you contribute to an open source project that requires copyright assignments, then its only promise is that current versions of the code will remain with t

> if you contribute to an open source project that requires copyright assignments, then its only promise is that current versions of the code will remain with the same (open-source) license. Future versions might as well become proprietary That depends. I don't know the current paperwork, but I assume assignments for GNU software still involve a contract promising to maintain a substantially similar free software licence.