Tracking files and file-level operations

[Stephen J. Turnbull]

Philippe Lhoste writes:

 > I know next to nothing with Git, but from threads in this mailing
 > list, I thought it was able to track file fragments or something.

It doesn't track fragments, but for *most* workflows it's reasonably
good at discovering where fragments are after the fact (this is called
the "pickaxe").

What git does track is the revisions where content of each file
changes.  Ie, it can do a "diff -qr" between two revisions essentially
instantaneously.  Everything else git does either supports that
capability or builds on it.