there isn't, by default, a dump of code that represents your program as it exists right now If everything is in file xyz.changes, and the file is trivially par

there isn't, by default, a dump of code that represents your program as it exists right now If everything is in file xyz.changes, and the file is trivially parsable, could you write a program to parse the file, replay the changes up to time T, and dump out a textual representation of the program as it existed at T? I get that this isn't the Smalltalk way. Typically it's best to approach a system on its own terms. Ideas like this are probably the equivalent of a newcomer to Lisp trying to "improve" things by getting rid of the parens. I'm just curious about what the technical barriers to doing such a thing would be.