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Re: excellent GIT video

From: Mark Reibert <svn_at_reibert.com>
Date: 2007-11-02 06:56:16 CET

On Thu, 2007-11-01 at 11:41 -0400, Greg Hudson wrote:
> >From a theoretical viewpoint, I'm not sold. I don't believe you can
> create reliable rename heuristics based purely on tree state. A simple
> query operation like "show me this file's history and don't stop at
> renames" seems likely to erroneously bottom out a lot, or erroneously
> show you a file that wasn't actually part of the history at all. And a
> merge in the presence of tree reorganizations (on either side) seems
> prone to catastrophic failure. That's certainly no worse than
> Subversion--but when Subversion's poor tree merging is a major selling
> point for alternative version control systems, I think you want to do
> better than you can with heuristics.

Linus would tell you renames do not matter; rather tracking file content
is important.

I am not sure how I feel about that. On one hand, it is not difficult to
dream up realistic scenarios where this makes sense. For example, if I
move a routine from one file to another, Git will track this nicely
whereas a file-based versioning tool will just see (unrelated) changes
in two files. On the other hand, it just feels weird!

Mark S. Reibert, Ph.D.
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Received on Fri Nov 2 06:56:26 2007

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