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Re: hg, git, fossil, ...

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Date Thu, 28 Aug 2014 09:56:05 -0500
From Tim Chase <python.list@tim.thechases.com>
To Marko Rauhamaa <marko@pacujo.net>
Subject Re: hg, git, fossil, ...
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On 2014-08-28 08:58, Marko Rauhamaa wrote:
> The main problem with hg (and git) is the way cherrypicking is done.
> 
> See these graphics:
> 
>  [1]   Product-Ver1
>             |
>             | bugfix
>             |
>             V          feature development
>        Product-Ver1' ----------------------> Product-Ver2'
> 
>                        feature development
>  [2]   Product-Ver1 -----------------------> Product-Ver2
>                                                   |
>                                                   | bugfix
>                                                   |
>                            cherry-picking         V
>        Product-Ver1' <---------------------- Product-Ver2'
> 
> 
> My beef is this: The starting point and end result of [1] and [2] is
> identical. The version histories of Product-Ver1' and Product-Ver2'
> should usually also be identical. In hg and git, they are not. In
> CVS, they are not. In SVN, they are not.
> 
> In TeamWare (and bitkeeper?), the version histories are identical.

I'm not sure how you arrive at the conclusion that git/hg/cvs/svn
are wrong and TeamWare et al. are correct.  If you diff the two,
you'll find that the end result is the same, but the history is
different.  At least git/hg/bzr ensure that the historical tree that
I have and the historical tree that you have are identical.  In your
description, their histories are not.  This ensures that when I speak
about "the ancestor of Product-Ver2", we're both talking about the
same thing.  In #1, that's Product-Ver1' while in #2, that's
Product-Ver2.

-tkc


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Re: Python vs C++ Amirouche Boubekki <amirouche.boubekki@gmail.com> - 2014-08-26 10:12 +0200
  Re: Python vs C++ alex23 <wuwei23@gmail.com> - 2014-08-27 15:43 +1000
    Re: Python vs C++ Ian Kelly <ian.g.kelly@gmail.com> - 2014-08-27 00:23 -0600
    Re: Python vs C++ Ian Kelly <ian.g.kelly@gmail.com> - 2014-08-27 00:33 -0600
    Re: What is acceptable as 'open-source'?  [was Python vs C++] "Frank Millman" <frank@chagford.com> - 2014-08-27 09:50 +0200
      Re: What is acceptable as 'open-source'? Paul Rubin <no.email@nospam.invalid> - 2014-08-27 09:38 -0700
        Re: What is acceptable as 'open-source'? Marko Rauhamaa <marko@pacujo.net> - 2014-08-27 20:14 +0300
          Re: What is acceptable as 'open-source'? Rustom Mody <rustompmody@gmail.com> - 2014-08-27 10:41 -0700
          Re: What is acceptable as 'open-source'? Chris Angelico <rosuav@gmail.com> - 2014-08-28 08:46 +1000
            Re: What is acceptable as 'open-source'? Marko Rauhamaa <marko@pacujo.net> - 2014-08-28 08:31 +0300
              Re: What is acceptable as 'open-source'? Chris Angelico <rosuav@gmail.com> - 2014-08-28 15:44 +1000
      Re: What is acceptable as 'open-source'?  [was Python vs C++] Christian Gollwitzer <auriocus@gmx.de> - 2014-08-27 21:41 +0200
    Re: What is acceptable as 'open-source'? [was Python vs C++] Chris Angelico <rosuav@gmail.com> - 2014-08-27 18:03 +1000
    Re: What is acceptable as 'open-source'?  [was Python vs C++] Ned Batchelder <ned@nedbatchelder.com> - 2014-08-27 07:54 -0400
      Re: What is acceptable as 'open-source'?  [was Python vs C++] Rustom Mody <rustompmody@gmail.com> - 2014-08-27 10:29 -0700
        hg, git, fossil, ... [was Re: What is acceptable as 'open-source'? [was Python vs C++]] Ethan Furman <ethan@stoneleaf.us> - 2014-08-27 11:26 -0700
        Re: hg, git, fossil, ... [was Re: What is acceptable as 'open-source'? [was Python vs C++]] Skip Montanaro <skip@pobox.com> - 2014-08-27 13:51 -0500
          Re: hg, git, fossil, ... Marko Rauhamaa <marko@pacujo.net> - 2014-08-28 08:58 +0300
            Re: hg, git, fossil, ... Tim Chase <python.list@tim.thechases.com> - 2014-08-28 09:56 -0500
            Re: hg, git, fossil, ... Ned Batchelder <ned@nedbatchelder.com> - 2014-08-28 11:39 -0400
              Re: hg, git, fossil, ... Marko Rauhamaa <marko@pacujo.net> - 2014-08-28 19:17 +0300
                Re: hg, git, fossil, ... Tim Chase <python.list@tim.thechases.com> - 2014-08-28 11:32 -0500
                Re: hg, git, fossil, ... Chris Angelico <rosuav@gmail.com> - 2014-08-29 02:38 +1000
                Re: hg, git, fossil, ... Marko Rauhamaa <marko@pacujo.net> - 2014-08-28 22:37 +0300
                Re: hg, git, fossil, ... Chris Angelico <rosuav@gmail.com> - 2014-08-29 09:08 +1000
                Re: hg, git, fossil, ... Lele Gaifax <lele@metapensiero.it> - 2014-08-29 09:43 +0200
                Re: hg, git, fossil, ... Marko Rauhamaa <marko@pacujo.net> - 2014-08-29 10:54 +0300
                Re: hg, git, fossil, ... Terry Reedy <tjreedy@udel.edu> - 2014-08-28 13:40 -0400
                Re: hg, git, fossil, ... Tim Delaney <timothy.c.delaney@gmail.com> - 2014-08-29 07:25 +1000
                Re: hg, git, fossil, ... Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-08-28 22:41 +0100
                Re: hg, git, fossil, ... Ian Kelly <ian.g.kelly@gmail.com> - 2014-08-28 20:20 -0600
                Re: hg, git, fossil, ... Marko Rauhamaa <marko@pacujo.net> - 2014-08-29 08:59 +0300
                Re: hg, git, fossil, ... Chris Angelico <rosuav@gmail.com> - 2014-08-29 17:20 +1000
                Re: hg, git, fossil, ... Marko Rauhamaa <marko@pacujo.net> - 2014-08-29 10:48 +0300
                Re: hg, git, fossil, ... Chris Angelico <rosuav@gmail.com> - 2014-08-29 12:24 +1000
                Re: hg, git, fossil, ... Rustom Mody <rustompmody@gmail.com> - 2014-08-28 19:53 -0700
            Re: hg, git, fossil, ... Ian Kelly <ian.g.kelly@gmail.com> - 2014-08-28 19:56 -0600
              Re: hg, git, fossil, ... Marko Rauhamaa <marko@pacujo.net> - 2014-08-29 08:50 +0300
                Re: hg, git, fossil, ... Chris Angelico <rosuav@gmail.com> - 2014-08-29 17:19 +1000
                Re: hg, git, fossil, ... Marko Rauhamaa <marko@pacujo.net> - 2014-08-29 10:43 +0300
        Re: hg, git, fossil, ... [was Re: What is acceptable as 'open-source'? [was Python vs C++]] Ethan Furman <ethan@stoneleaf.us> - 2014-08-27 11:58 -0700
        Re: hg, git, fossil, ... [was Re: What is acceptable as 'open-source'? [was Python vs C++]] Chris Angelico <rosuav@gmail.com> - 2014-08-28 09:07 +1000
    Re: Python vs C++ Amirouche Boubekki <amirouche.boubekki@gmail.com> - 2014-08-27 15:15 +0200
    Re: What is acceptable as 'open-source'? [was Python vs C++] "Frank Millman" <frank@chagford.com> - 2014-08-28 15:44 +0200
    Re: What is acceptable as 'open-source'? [was Python vs C++] Chris Angelico <rosuav@gmail.com> - 2014-08-28 23:58 +1000

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