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From: Michael J Gruber <git@drmicha•warpmail.net>
To: Andreas Schwab <schwab@linux-m68k•org>
Cc: Junio C Hamano <gitster@pobox•com>, Jeff King <peff@peff•net>,
	git@vger•kernel.org
Subject: Re: [RFC/largely untested/PATCH] sha1_name: interpret ~n as HEAD~n
Date: Mon, 02 May 2011 10:42:31 +0200	[thread overview]
Message-ID: <4DBE6E77.3030703@drmicha.warpmail.net> (raw)
In-Reply-To: <m21v0kw1es.fsf@igel.home>

Andreas Schwab venit, vidit, dixit 30.04.2011 11:09:
> Junio C Hamano <gitster@pobox•com> writes:
> 
>> Andreas Schwab <schwab@linux-m68k•org> writes:
>>
>>> Jeff King <peff@peff•net> writes:
>>>
>>>> It also conflicts a little with the shell's "~user" syntax, though
>>>> presumably you don't have users named "1" and "2".
>>>
>>> Well, you sorta do if you did use pushd.
>>
>> Yeah, I was also worried about that.  Or some arcane system
>> misinterpreting "~0" as the home directory of root ;-)
> 
> On non-arcane systems ~0 is expanded to the current directory.
> 
> Andreas.
> 
[cumulative reply :)]

While we could use a short-hand for HEAD also I don't think ~0 really is
a concern.

Regarding consistency:
We try to have reasonable defaults and try to dwim (which are different
things) even if that breaks consistency/systematics, because
useful/reasonable and "what I mean" depend on the context.

"^" resp. ".." and "..." are ambiguous and cannot be resolved easily
because for most commands they can mean two things resp. require two
arguments. (".." and "..." could maybe default do "@{u}..HEAD" etc.)

"~<n>" can only take a revision argument to its left, and also it needs
an argument to its left (as opposed to "^"). Therefore we can default it
unambiguously and without braking any current usage (that I know of).

Regarding rebase -i -<n>:
git-rebase (-i) does not have a log/rev-list like interface at all (just
like git-cherry does not), and introducing an argument which looks like
it did would just increase the user confusion, I'm afraid.

Michael

  reply	other threads:[~2011-05-02  8:42 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-29 15:53 [RFC/largely untested/PATCH] sha1_name: interpret ~n as HEAD~n Michael J Gruber
2011-04-29 16:21 ` Junio C Hamano
2011-05-01  8:30   ` Michael J Gruber
2011-05-01  9:04     ` Matthieu Moy
2011-05-01 18:34     ` Junio C Hamano
2011-05-01 21:21       ` Matthieu Moy
2011-04-29 22:34 ` Jeff King
2011-04-29 23:23   ` Sverre Rabbelier
2011-05-07  2:24     ` Mikael Magnusson
2011-04-29 23:31   ` Andreas Schwab
2011-04-30  5:33     ` Junio C Hamano
2011-04-30  9:09       ` Andreas Schwab
2011-05-02  8:42         ` Michael J Gruber [this message]
     [not found]           ` <BANLkTinxszGhtYobuvci5Yi8eTHW+pi2wA@mail.gmail.com>
2011-05-02 11:04             ` Michael J Gruber
2011-05-02 16:33               ` Junio C Hamano
2011-05-02 17:49                 ` Michael J Gruber
2011-05-02 20:14                   ` Matthieu Moy

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