Re: git guidance

Al Boldi wrote:

Andreas Ericsson wrote:

quoted

So, to get to the bottom of this, which of the following workflows is it
you want git to support?

### WORKFLOW A ###
edit, edit, edit
edit, edit, edit
edit, edit, edit
Oops I made a mistake and need to hop back to "current - 12".
edit, edit, edit
edit, edit, edit
publish everything, similar to just tarring up your workdir and sending
out ### END WORKFLOW A ###

### WORKFLOW B ###
edit, edit, edit
ok this looks good, I want to save a checkpoint here
edit, edit, edit
looks good again. next checkpoint
edit, edit, edit
oh crap, back to checkpoint 2
edit, edit, edit
ooh, that's better. save a checkpoint and publish those checkpoints
### END WORKFLOW B ###

### WORKFLOW C ###
for every save on a gitfs mounted dir, do an implied checkpoint, commit, or publish (should be adjustable), on its privately created on-the-fly repository.
### END WORKFLOW C ###

So you *do* want an editor's undo function, but for an entire filesystem.
That's a handy thing to have every now and then, but it's not what git
(or any other scm) does.

For example:

  echo "// last comment on this file" >> /gitfs.mounted/file

should do an implied checkpoint, and make these checkpoints immediately visible under some checkpoint branch of the gitfs mounted dir.

Note, this way the developer gets version control without even noticing, and works completely transparent to any kind of application.

One other thing that's fairly important to note is that this can never
ever handle changesets, since each write() of each file will be a commit
on its own. It's so far from what git does that I think you'd be better
off just implementing it from scratch, or looking at a versioned fs, like
Jakub suggested in his reply.

You're also neglecting one very important aspect of what an SCM provides
if you go down this road, namely project history. You basically have two
choices with this "implicit save on each edit":
* force the user to supply a commit message for each and every edit
* ignore commit messages altogether

Obviously, forcing a commit message each time is the only way to get some
sort of proper history to look at after it's done, but it's also such an
appalling nuisance that I doubt *anyone* will actually like that, and since
changesets aren't supported, you'll have "implement xniz api, commit 1 of X"
messages. Cumbersome, stupid, and not very useful.

Ignoring commit messages altogether means you ignore the entire history,
and the SCM then becomes a filesystem-wide "undo" cache. This could
ofcourse work, but it's something akin to building a nuclear powerplant
to power a single lightbulb.

-- 
Andreas Ericsson                   andreas.ericsson@op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231