From: David Kastrup <dak@gnu.org>
To: "Stephen J. Turnbull" <stephen@xemacs.org>
Cc: emacs-devel@gnu.org
Subject: Re: Referring to revisions in the git future.
Date: Sat, 01 Nov 2014 08:49:34 +0100 [thread overview]
Message-ID: <87k33f4ay9.fsf@fencepost.gnu.org> (raw)
In-Reply-To: <87oasrl7sn.fsf@thinkpad-t440p.tsdh.org> (Tassilo Horn's message of "Sat, 01 Nov 2014 08:05:44 +0100")
Tassilo Horn <tsdh@gnu.org> writes:
> "Stephen J. Turnbull" <stephen@xemacs.org> writes:
>
>> > 40 hexadecimal digits are pretty unambiguous on their own.
>>
>> Sure, but I had in mind abbreviations as well.
>
> According to the Regex Dictionary at http://www.visca.com/regexdict/
> there is no single English word matching the regex "^[a-f0-9]{7,}$" and
> AFAICS an abberviated Git SHA is 7 chars wide.
It is at least 6 characters I think, more if 6 would not be unambiguous.
The problem is that "unambiguous" changes over time and repositories. A
historically unambiguous SHA might become ambiguous over time and/or it
might be unambiguous in one person's repository but not another. And
when garbage collection removes rebased or deleted branches,
"unambiguous" might even become shorter again.
It's not like anybody's going to want to type off "abbreviations" by
hand anyway: too error-prone. Just paste the full thing. Really. I've
been developing for years with Git, and that's just what everybody does
most of the time.
--
David Kastrup
next prev parent reply other threads:[~2014-11-01 7:49 UTC|newest]
Thread overview: 137+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-28 22:33 Referring to revisions in the git future Alan Mackenzie
2014-10-28 22:54 ` Óscar Fuentes
2014-10-28 23:05 ` Alan Mackenzie
2014-10-28 23:24 ` Óscar Fuentes
2014-10-31 22:47 ` Paul Eggert
2014-10-29 0:49 ` Eric S. Raymond
2014-10-29 3:38 ` Stephen J. Turnbull
2014-10-29 12:26 ` Stefan Monnier
2014-10-29 12:41 ` Alexander Baier
2014-10-29 14:52 ` Barry Warsaw
2014-10-29 15:01 ` David Kastrup
2014-10-29 15:06 ` Eric S. Raymond
2014-10-29 18:12 ` Barry Warsaw
2014-10-29 22:09 ` Lars Magne Ingebrigtsen
2014-10-29 22:29 ` Eric S. Raymond
2014-10-29 23:31 ` Paul Eggert
2014-10-30 0:01 ` Nic Ferrier
2014-10-30 1:53 ` Stefan Monnier
2014-10-30 2:10 ` Eric S. Raymond
2014-10-30 2:13 ` Paul Eggert
2014-10-30 2:48 ` Eric S. Raymond
2014-10-30 2:25 ` Glenn Morris
2014-10-30 10:10 ` David Kastrup
2014-10-30 13:03 ` Stefan Monnier
2014-10-30 13:40 ` David Kastrup
2014-10-30 14:00 ` Stefan Monnier
2014-10-30 13:02 ` Stefan Monnier
2014-10-30 15:12 ` Eric S. Raymond
2014-10-30 16:49 ` Stefan Monnier
2014-10-30 6:46 ` Jan Djärv
2014-10-30 7:36 ` Ivan Shmakov
2014-10-30 8:09 ` Jan Djärv
2014-10-30 8:31 ` Eric S. Raymond
2014-10-30 9:53 ` Andreas Schwab
2014-10-30 10:13 ` Eric S. Raymond
2014-10-30 10:32 ` Andreas Schwab
2014-10-30 11:13 ` Nicolas Richard
2014-10-30 10:12 ` David Kastrup
2014-10-30 13:29 ` Stefan Monnier
2014-10-30 15:33 ` DVCS design philosophy Eric S. Raymond
2014-10-30 16:59 ` Stefan Monnier
2014-10-30 17:41 ` Eric S. Raymond
2014-10-31 20:18 ` Referring to revisions in the git future Nicolas Richard
2014-10-31 21:11 ` Stefan Monnier
2014-11-01 1:44 ` Stephen J. Turnbull
2014-11-01 7:58 ` David Kastrup
2014-10-30 14:20 ` Barry Warsaw
2014-11-01 1:23 ` Stephen J. Turnbull
2014-10-30 15:52 ` Eli Zaretskii
2014-10-30 3:32 ` Stephen J. Turnbull
2014-10-30 4:35 ` Barry Warsaw
2014-10-30 5:24 ` Stephen J. Turnbull
2014-10-30 10:17 ` David Kastrup
2014-10-30 13:42 ` Alex Bennée
2014-10-30 13:19 ` Stefan Monnier
2014-10-31 6:36 ` Stephen J. Turnbull
2014-10-31 19:42 ` David Kastrup
2014-11-01 1:34 ` Stephen J. Turnbull
2014-11-01 7:05 ` Tassilo Horn
2014-11-01 7:09 ` Dima Kogan
2014-11-01 7:28 ` Paul Eggert
2014-11-01 7:49 ` David Kastrup [this message]
2014-11-01 9:46 ` Alan Mackenzie
2014-11-01 10:13 ` Eli Zaretskii
2014-11-01 11:33 ` Alan Mackenzie
2014-11-01 13:06 ` Eli Zaretskii
2014-11-01 13:21 ` Alan Mackenzie
2014-11-01 10:29 ` David Kastrup
2014-11-01 11:29 ` Alan Mackenzie
2014-11-01 11:57 ` David Kastrup
2014-11-01 12:29 ` Alan Mackenzie
2014-11-01 12:47 ` Ivan Shmakov
2014-11-01 13:46 ` Alan Mackenzie
2014-11-01 18:58 ` Stephen J. Turnbull
2014-11-01 12:49 ` David Kastrup
2014-10-29 1:11 ` Stefan Monnier
2014-10-29 6:06 ` Werner LEMBERG
2014-10-29 9:01 ` David Kastrup
2014-10-29 8:50 ` David Kastrup
2014-10-29 9:52 ` Eric S. Raymond
2014-10-29 11:00 ` David Kastrup
2014-10-29 14:32 ` Eli Zaretskii
2014-10-29 14:35 ` David Kastrup
2014-10-29 14:55 ` Eli Zaretskii
2014-10-30 4:44 ` Richard Stallman
2014-10-30 8:32 ` Eric S. Raymond
2014-10-30 10:25 ` David Kastrup
2014-10-30 11:51 ` Eric S. Raymond
2014-10-30 12:14 ` David Kastrup
2014-10-30 15:01 ` Eric S. Raymond
2014-10-30 15:53 ` Eli Zaretskii
2014-10-30 15:56 ` Eric S. Raymond
2014-10-30 16:44 ` Eli Zaretskii
2014-10-31 7:47 ` Richard Stallman
2014-10-31 8:17 ` Eli Zaretskii
2014-10-31 10:21 ` Eric S. Raymond
2014-10-29 12:35 ` Stefan Monnier
2014-10-29 13:00 ` Jose E. Marchesi
2014-10-29 13:59 ` Stefan Monnier
2014-10-29 14:39 ` Eric S. Raymond
2014-10-29 14:46 ` Rasmus
2014-10-29 14:52 ` Eric S. Raymond
2014-10-30 0:58 ` Rob Browning
2014-10-29 15:27 ` Stefan Monnier
2014-10-29 14:04 ` utf8 and emacs text/string multibyte representation Camm Maguire
2014-10-29 14:51 ` Eli Zaretskii
2014-10-29 15:55 ` Camm Maguire
2014-10-29 16:19 ` Eli Zaretskii
2014-10-30 14:13 ` Camm Maguire
2014-10-30 16:06 ` Eli Zaretskii
2014-10-30 16:27 ` Camm Maguire
2014-10-30 16:35 ` Eli Zaretskii
2014-10-31 18:05 ` Camm Maguire
2014-11-01 9:01 ` Eli Zaretskii
2014-11-01 18:32 ` Stephen J. Turnbull
2014-11-01 18:41 ` David Kastrup
2014-11-01 19:09 ` Stephen J. Turnbull
2014-11-02 0:56 ` Stefan Monnier
2014-11-01 1:16 ` Stephen J. Turnbull
2014-10-29 16:45 ` Stefan Monnier
2014-10-29 15:56 ` Raymond Toy
2014-10-30 14:16 ` Camm Maguire
2014-10-31 18:47 ` Sam Steingold
2014-10-31 21:00 ` Andreas Schwab
2014-10-31 19:52 ` [Gcl-devel] " Stefan Monnier
2014-10-30 3:08 ` Stephen J. Turnbull
2014-10-29 13:26 ` Referring to revisions in the git future Eric S. Raymond
2014-10-29 14:04 ` Stefan Monnier
2014-10-29 14:49 ` Eric S. Raymond
2014-10-30 2:43 ` Stephen J. Turnbull
2014-10-29 13:08 ` Jan Djärv
2014-10-29 13:27 ` Eric S. Raymond
2014-10-29 13:49 ` Eric S. Raymond
2014-10-29 18:03 ` Jan Djärv
2014-10-29 11:18 ` Alan Mackenzie
2014-10-29 11:37 ` David Kastrup
-- strict thread matches above, loose matches on Subject: below --
2014-10-31 9:43 Eli Zaretskii
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