Re: [RFC] Removing deleted files after checkout

[Carl Baldwin <cnb@fc.hp.com>]

On Tue, Aug 23, 2005 at 05:27:12PM -0400, Daniel Barkalow wrote:
> On Tue, 23 Aug 2005, Carl Baldwin wrote:
> 
> > On Tue, Aug 23, 2005 at 03:43:56PM -0400, Daniel Barkalow wrote:
> > > On Tue, 23 Aug 2005, Carl Baldwin wrote:
> > >
> > > > Hello,
> > > >
> > > > I recently started using git to revision control the source for my
> > > > web-page.  I wrote a post-update hook to checkout the files when I push
> > > > to the 'live' repository.
> > > >
> > > > In this particular context I decided that it was important to me to remove
> > > > deleted files after checking out the new HEAD.  I accomplished this by running
> > > > git-ls-files before and after the checkout.
> > > >
> > > > Is there a better way?  Could there be some way built into git to easily
> > > > find out what files dissappear when replacing the current index with one
> > > > from a new tree?  Is there already?  The behavior of git should NOT
> > > > change to delete these files but I would argue that some way should
> > > > exist to query what files disappeared if removing them is desired.
> > >
> > > If you don't use -f, git-checkout-script removes deleted files. Using -f
> > > tells it to ignore the old index, which means that it can't tell the
> > > difference between removed files and files that weren't tracked at all.
> >
> > Maybe I'm doing something wrong.  This does not happen for me.
> >
> > I tried a simple test with git v0.99.4...
> >
> > cd
> > mkdir test-git && cd test-git/
> > echo testing | cg-init
> > echo contents > file
> > git-add-script file
> > git-commit-script -m 'testing'
> 
> [point 1]
> 
> > cd ..
> > cg-clone test-git/.git/ test-git2
> > cd test-git2
> > cg-rm file
> > git-commit-script -m 'testing'
> > ls
> 
> > cg-push
> > cd ../test-git
> > git-checkout-script
> 
> Ah, okay. I think "push" and "checkout" don't play that well together;
> "push" changes the ref, which "checkout" uses to determine what it expects
> for the old contents, and then it's confused.
> 
> What you probably actually want is:
> 
> cd ../test-git
> git pull ../test-git2

The point is to push and use a post-update hook to do the checkout.  So,
this won't be possible.

> which will correctly identify before and after, and remove any files that
> were removed.
> 
> Alternatively, you could do, at point 1:
> 
> cp .git/refs/master .git/refs/deployed
> git checkout deployed

How to get a post-update hook to do this?  I suppose an update script
could set this up for the post-update to later use.

Thanks,
Carl

-- 
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 Carl Baldwin                        Systems VLSI Laboratory
 Hewlett Packard Company
 MS 88                               work: 970 898-1523
 3404 E. Harmony Rd.                 work: Carl.N.Baldwin@hp.com
 Fort Collins, CO 80525              home: Carl@ecBaldwin.net
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