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Re: git-describe

Followups directed to: comp.lang.java.programmer

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In message <alpine.DEB.2.00.1105261519520.19918@urchin.earth.li>, Tom 
Anderson wrote:

> The problem with this is that the numbers record the sequence in which
> changesets were added to the current repository - which in the presence of
> commits on multiple machines (ie for any realistic development team) means
> that the numbers won't be the same in different repositories.

Sounds like it’s more equivalent to what you might get out of a “reflog” on 
Git. This is a purely personal, interim record of changes to the repository, 
which is never pushed/pulled as part of the repository itself, and can be 
purged (on demand) at any time.

> Mercurial has a very slight edge here, in that as well as the hash-based 
> changeset IDs, it also has a sequential changeset number.

As soon as I read this, I wondered what would happen to the numbering if you 
did the Git equivalent of committing something, then abandoning that commit 
(resetting that branch back to a prior commit) and making a new one. This 
can’t just arise from mistakes; it’s recommended in the Git docs as a handy 
way of saving temporary changes while working om something else.

>> Exercise for the reader: what happens if you don’t specify “--tags”?
> 
> States it as revisions from the initial checkin?

Actually, no. It turns out there are two different kinds of tags, and which 
one is used depends on this option.

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Thread

git-describe Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-25 22:14 +1200
  Re: git-describe Tom Anderson <twic@urchin.earth.li> - 2011-05-26 17:59 +0100
    Re: git-describe Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-27 11:00 +1200
      Re: git-describe Tom Anderson <twic@urchin.earth.li> - 2011-05-27 23:51 +0100
        Re: git-describe Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-28 14:34 +1200
          Re: git-describe Joshua Cranmer <Pidgeot18@verizon.invalid> - 2011-05-27 23:21 -0400
            Re: git-describe Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-05-28 16:29 +1200
              Re: git-describe Tom Anderson <twic@urchin.earth.li> - 2011-05-29 00:33 +0100
          Re: git-describe Tom Anderson <twic@urchin.earth.li> - 2011-05-29 00:25 +0100

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