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From: Junio C Hamano <gitster@pobox.com>
To: Johannes Sixt <j.sixt@viscovery.net>
Cc: Angelo Borsotti <angelo.borsotti@gmail.com>, git <git@vger.kernel.org>
Subject: Re: erratic behavior commit --allow-empty
Date: Tue, 02 Oct 2012 10:27:02 -0700	[thread overview]
Message-ID: <7vzk449449.fsf@alter.siamese.dyndns.org> (raw)
In-Reply-To: <506AA51E.9010209@viscovery.net> (Johannes Sixt's message of "Tue, 02 Oct 2012 10:26:06 +0200")

Johannes Sixt <j.sixt@viscovery.net> writes:

> Note that git commit -m A --allow-empty *DID* create a commit. Only, that
> it received the same name (SHA1) as the commit you created before it
> because it had the exact same contents (files, parents, author, committer,
> and timestamps). Obviously, your script was executed sufficiently fast
> that the two commits happend in the same second.

Correct.

And this does not have anything to do with --allow-empty.  You can
"reset --soft HEAD^" immediately after committing a change and redo
it to get the same effect.  If you commit the same state with the
same history with the same message as the same person at the same
time, you will reliably get the same commit object.

And that is fundamental property called reproducibility.  There is
nothing to be alarmed by this exercise.

  parent reply	other threads:[~2012-10-02 17:27 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-02  7:51 erratic behavior commit --allow-empty Angelo Borsotti
2012-10-02  8:26 ` Johannes Sixt
2012-10-02  8:49   ` Angelo Borsotti
2012-10-02 17:27   ` Junio C Hamano [this message]
2012-10-02 19:34     ` Angelo Borsotti
2012-10-02 19:56       ` Junio C Hamano
2012-10-02 21:56         ` Angelo Borsotti
2012-10-03  2:10           ` PJ Weisberg
2012-10-03  5:37           ` Johannes Sixt
2012-10-03  6:22             ` Angelo Borsotti
2012-10-03  6:27               ` Johannes Sixt
     [not found]                 ` <CAB9Jk9AgtNQfWDr31CWbXf2ag=11du-aruu-0+nOZ3KaaG9=og@mail.gmail.com>
2012-10-03  7:12                   ` Johannes Sixt
2012-10-03  7:35                     ` Angelo Borsotti
2012-10-03 20:49                     ` Junio C Hamano
2012-10-03  7:29           ` Philip Oakley
2012-10-03  7:45             ` Angelo Borsotti
2012-10-03  8:04               ` Matthieu Moy
2012-10-03  8:24                 ` Angelo Borsotti
2012-10-03 11:07                   ` Matthieu Moy
2012-10-03 11:52                     ` Angelo Borsotti
     [not found]                       ` <CABURp0oHez6j8+FPG8Zm52TGVyC1XwWhE55TBDrXRGFrW6kWww@mail.gmail.com>
2012-10-03 13:35                         ` Angelo Borsotti
2012-10-03 14:15                           ` Phil Hord
2012-10-03 13:57                       ` Matthieu Moy
2012-10-03 14:46                         ` Angelo Borsotti
2012-10-03 14:52                           ` Matthieu Moy
2012-10-03 22:32                       ` Philip Oakley
2012-10-04  7:07                         ` Angelo Borsotti
2012-10-04 13:24                           ` Phil Hord
2012-10-04 19:00                             ` Angelo Borsotti
2012-10-04 21:17                           ` Philip Oakley
2012-10-04 22:09                             ` Angelo Borsotti
2012-10-04 22:42                               ` Philip Oakley
2012-10-04 23:10                                 ` Angelo Borsotti
2012-10-03 12:25                   ` Tomas Carnecky
2012-10-03 13:08                     ` Angelo Borsotti
2012-10-03 10:12               ` Andreas Schwab
2012-10-03 11:37                 ` Angelo Borsotti
2012-10-03 13:44                   ` Andreas Schwab
2012-10-03 14:37                     ` Angelo Borsotti
2012-10-03 16:44                       ` Andreas Schwab
2012-10-03 17:37                         ` Angelo Borsotti
2012-10-03 19:03                           ` Andreas Schwab
2012-10-03 19:11                             ` Angelo Borsotti
2012-10-03 20:30                               ` Andreas Schwab
2012-10-03 12:59       ` Phil Hord
2012-10-03 14:25         ` Angelo Borsotti
2012-10-03 16:06           ` PJ Weisberg
2012-10-03 17:34             ` Angelo Borsotti
2012-10-03 19:05               ` Andreas Schwab
2012-10-03 19:43               ` PJ Weisberg
2012-10-05  8:15               ` Lars Noschinski
2013-01-12 18:30   ` Jan Engelhardt
2013-01-16 12:26     ` Joachim Schmitz

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