I do not know of such a thing.

Version control system for the laziest of the lazy doesn't satisfy your requirement for no external files, but instead of making copies, you could just keep appending to your file.

In reply to Re: OT: Does anyone know of a version control system that doesn't use separate files or a repo? by toolic
in thread OT: Does anyone know of a version control system that doesn't use separate files or a repo? by isync

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