Have you thought of writing a spec on what this set of programs is supposed to do? It may be faster to start over than to figure out what was done before and then write in incrementals. Plus you may go insane if you start contemplating the why.

Most of what you're talking about is really doing a spec of the old program and then improving it. With a new perspective, you may have a better idea of how long it will take to write it.

In reply to Re: Rewriting a large code base by lemming
in thread Rewriting a large code base by Ovid

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